1-heptene

H225 (100%): Highly Flammable liquid and vapor [Danger Flammable liquids]

H304 (100%): May be fatal if swallowed and enters airways [Danger Aspiration hazard]

H400 (100%): Very toxic to aquatic life [Warning Hazardous to the aquatic environment, acute hazard]

H410 (100%): Very toxic to aquatic life with long lasting effects [Warning Hazardous to the aquatic environment, long-term hazard]

P210, P233, P240, P241, P242, P243, P273, P280, P301+P316, P303+P361+P353, P331, P370+P378, P391, P403+P235, P405, and P501 (click each P-code to see the statement)

Aggregated GHS information provided per 108 reports by companies from 2 notifications to the ECHA C&L Inventory. Each notification may be associated with multiple companies.

Information may vary between notifications depending on impurities, additives, and other factors. The percentage value in parenthesis indicates the notified classification ratio from companies that provide hazard codes. Only hazard codes with percentage values above 10% are shown. For more detailed information, please visit ECHA C&L website.

H304 (86.4%): May be fatal if swallowed and enters airways [Danger Aspiration hazard]

H315 (68.2%): Causes skin irritation [Warning Skin corrosion/irritation]

H319 (68.2%): Causes serious eye irritation [Warning Serious eye damage/eye irritation]

H335 (13.6%): May cause respiratory irritation [Warning Specific target organ toxicity, single exposure; Respiratory tract irritation]

P210, P233, P240, P241, P242, P243, P261, P264, P264+P265, P271, P280, P301+P316, P302+P352, P303+P361+P353, P304+P340, P305+P351+P338, P319, P321, P331, P332+P317, P337+P317, P362+P364, P370+P378, P403+P233, P403+P235, P405, and P501 (click each P-code to see the statement)

Aggregated GHS information provided per 44 reports by companies from 7 notifications to the ECHA C&L Inventory. Each notification may be associated with multiple companies.

H225: Highly Flammable liquid and vapor [Danger Flammable liquids]

H304: May be fatal if swallowed and enters airways [Danger Aspiration hazard]

H315: Causes skin irritation [Warning Skin corrosion/irritation]

H320: Causes eye irritation [Warning Serious eye damage/eye irritation]

P210, P233, P240, P241, P242, P243, P264, P264+P265, P280, P301+P316, P302+P352, P303+P361+P353, P305+P351+P338, P321, P331, P332+P317, P337+P317, P362+P364, P370+P378, P403+P235, P405, and P501 (click each P-code to see the statement)

Remove from exposure. Administer artificial respiration if needed. (USCG, 1999)

General First Aid:

· Call 911 or emergency medical service.

· Ensure that medical personnel are aware of the material(s) involved, take precautions to protect themselves and avoid contamination.

· Move victim to fresh air if it can be done safely.

· Administer oxygen if breathing is difficult.

· If victim is not breathing:

-- DO NOT perform mouth-to-mouth resuscitation; the victim may have ingested or inhaled the substance.

-- If equipped and pulse detected, wash face and mouth, then give artificial respiration using a proper respiratory medical device (bag-valve mask, pocket mask equipped with a one-way valve or other device).

-- If no pulse detected or no respiratory medical device available, provide continuous compressions. Conduct a pulse check every two minutes or monitor for any signs of spontaneous respirations.

· Remove and isolate contaminated clothing and shoes.

· For minor skin contact, avoid spreading material on unaffected skin.

· In case of contact with substance, remove immediately by flushing skin or eyes with running water for at least 20 minutes.

· For severe burns, immediate medical attention is required.

· Effects of exposure (inhalation, ingestion, or skin contact) to substance may be delayed.

· Keep victim calm and warm.

· Keep victim under observation.

· For further assistance, contact your local Poison Control Center.

· Note: Basic Life Support (BLS) and Advanced Life Support (ALS) should be done by trained professionals.

Specific First Aid:

· Wash skin with soap and water.

· In case of burns, immediately cool affected skin for as long as possible with cold water. Do not remove clothing if adhering to skin.

In Canada, an Emergency Response Assistance Plan (ERAP) may be required for this product. Please consult the shipping paper and/or the "ERAP" section.

Excerpt from ERG Guide 128 [Flammable Liquids (Water-Immiscible)]:

CAUTION: The majority of these products have a very low flash point. Use of water spray when fighting fire may be inefficient. CAUTION: For mixtures containing alcohol or polar solvent, alcohol-resistant foam may be more effective.

SMALL FIRE: Dry chemical, CO2, water spray or regular foam. If regular foam is ineffective or unavailable, use alcohol-resistant foam.

LARGE FIRE: Water spray, fog or regular foam. If regular foam is ineffective or unavailable, use alcohol-resistant foam. Avoid aiming straight or solid streams directly onto the product. If it can be done safely, move undamaged containers away from the area around the fire.

FIRE INVOLVING TANKS, RAIL TANK CARS OR HIGHWAY TANKS: Fight fire from maximum distance or use unmanned master stream devices or monitor nozzles. Cool containers with flooding quantities of water until well after fire is out. For petroleum crude oil, do not spray water directly into a breached tank car. This can lead to a dangerous boil over. Withdraw immediately in case of rising sound from venting safety devices or discoloration of tank. ALWAYS stay away from tanks in direct contact with flames. For massive fire, use unmanned master stream devices or monitor nozzles; if this is impossible, withdraw from area and let fire burn. (ERG, 2024)

TO FIGHT FIRE, USE FOAM, DRY CHEMICAL, CARBON DIOXIDE.

· CALL 911. Then call emergency response telephone number on shipping paper. If shipping paper not available or no answer, refer to appropriate telephone number listed on the inside back cover.

· Keep unauthorized personnel away.

· Stay upwind, uphill and/or upstream.

· Ventilate closed spaces before entering, but only if properly trained and equipped.

· ELIMINATE all ignition sources (no smoking, flares, sparks or flames) from immediate area.

· All equipment used when handling the product must be grounded.

· Do not touch or walk through spilled material.

· Stop leak if you can do it without risk.

· Prevent entry into waterways, sewers, basements or confined areas.

· A vapor-suppressing foam may be used to reduce vapors.

· Absorb or cover with dry earth, sand or other non-combustible material and transfer to containers.

· Use clean, non-sparking tools to collect absorbed material.

Large Spill

· Dike far ahead of liquid spill for later disposal.

· Water spray may reduce vapor, but may not prevent ignition in closed spaces.

Excerpt from ERG Guide 128 [Flammable Liquids (Water-Immiscible)]:

IMMEDIATE PRECAUTIONARY MEASURE: Isolate spill or leak area for at least 50 meters (150 feet) in all directions.

LARGE SPILL: Consider initial downwind evacuation for at least 300 meters (1000 feet).

FIRE: If tank, rail tank car or highway tank is involved in a fire, ISOLATE for 800 meters (1/2 mile) in all directions; also, consider initial evacuation for 800 meters (1/2 mile) in all directions. (ERG, 2024)

Immediate precautionary measure

· Isolate spill or leak area for at least 50 meters (150 feet) in all directions.

· Consider initial downwind evacuation for at least 300 meters (1000 feet).

· If tank, rail tank car or highway tank is involved in a fire, ISOLATE for 800 meters (1/2 mile) in all directions; also, consider initial evacuation for 800 meters (1/2 mile) in all directions.

SRP: At the time of review, criteria for land treatment or burial (sanitary landfill) disposal practices are subject to significant revision. Prior to implementing land disposal of waste residue (including waste sludge), consult with environmental regulatory agencies for guidance on acceptable disposal practices.

Excerpt from ERG Guide 128 [Flammable Liquids (Water-Immiscible)]:

ELIMINATE all ignition sources (no smoking, flares, sparks or flames) from immediate area. All equipment used when handling the product must be grounded. Do not touch or walk through spilled material. Stop leak if you can do it without risk. Prevent entry into waterways, sewers, basements or confined areas. A vapor-suppressing foam may be used to reduce vapors. Absorb or cover with dry earth, sand or other non-combustible material and transfer to containers. Use clean, non-sparking tools to collect absorbed material.

LARGE SPILL: Dike far ahead of liquid spill for later disposal. Water spray may reduce vapor, but may not prevent ignition in closed spaces. (ERG, 2024)

· Wear positive pressure self-contained breathing apparatus (SCBA).

· Structural firefighters' protective clothing provides thermal protection but only limited chemical protection.

130 [ppm]

1400 [ppm]

8700 [ppm]

CAUTION: The majority of these products have a very low flash point. Use of water spray when fighting fire may be inefficient.

CAUTION: For mixtures containing alcohol or polar solvent, alcohol-resistant foam may be more effective.

Small Fire

· Dry chemical, CO2, water spray or regular foam. If regular foam is ineffective or unavailable, use alcohol-resistant foam.

Large Fire

· Water spray, fog or regular foam. If regular foam is ineffective or unavailable, use alcohol-resistant foam.

· Avoid aiming straight or solid streams directly onto the product.

· If it can be done safely, move undamaged containers away from the area around the fire.

Fire Involving Tanks, Rail Tank Cars or Highway Tanks

· Fight fire from maximum distance or use unmanned master stream devices or monitor nozzles.

· Cool containers with flooding quantities of water until well after fire is out.

· For petroleum crude oil, do not spray water directly into a breached tank car. This can lead to a dangerous boil over.

· Withdraw immediately in case of rising sound from venting safety devices or discoloration of tank.

· ALWAYS stay away from tanks in direct contact with flames.

· For massive fire, use unmanned master stream devices or monitor nozzles; if this is impossible, withdraw from area and let fire burn.

Safety goggles or face shield; similar to gasoline. (USCG, 1999)

N-heptene appears as a colorless liquid. Insoluble in water and much less dense than water. Vapors heavier than air. Used to make other chemicals.

Colorless liquid; [HSDB]

Colorless liquid; [CAMEO] Distinct odor; [Matheson Tri-Gas MSDS]

Colorless liquid

200.5 °F at 760 mmHg (USCG, 1999)

93.6 °C @760 [mm Hg]

-182 °F (USCG, 1999)

-119.7 °C

25 °F (USCG, 1999)

LESS THAN 32 °F (CLOSED CUP)

Soluble in ethanol and ether; slightly soluble in carbon tetrachloride

In water, 18.2 mg/l @ 25 °C

0.697 at 68 °F (USCG, 1999) - Less dense than water; will float

0.6970 @ 20 °C/4 °C

0.6969 @ 20°C

0.7 (AIR= 1)

59.3 [mmHg]

56.0 [mmHg]

59.3 mm Hg @ 25 °C

59.3 [mm Hg] @25 °C

log Kow= 3.99

500 °F (USCG, 1999)

When heated to decomposition it emits acrid smoke and fumes.

0.5 sq mm/s

Index of refraction: 1.3994 @ 20 °C

Hydroxyl radical rate constant= 4.05X10-11 cu cm/molecule-sec @ 25 °C

Boiling point

Composition

Critical point

Diamagnetic susceptibility

Dielectric constant

Excess enthalpy

Excess volume

Fusion temperature

Heat of solution

Heat of sublimation

Magnetic susceptibility

Melting temperature

Mixing enthalpy

Optical coefficient

Highly flammable. Insoluble in water.

Hydrocarbons, Aliphatic Unsaturated

Highly Flammable

N-HEPTENE may react vigorously with strong oxidizing agents. May react exothermically with reducing agents to release hydrogen gas.

Neurotoxin - Acute solvent syndrome

Basic Treatment: Establish a patent airway. Suction if necessary. Watch for signs of respiratory insufficiency and assist ventilations if necessary. Administer oxygen by nonrebreather mask at 10 to 15 L/min. Monitor for pulmonary edema and treat if necessary ... Anticipate seizures and treat as necessary ... For eye contamination, flush eyes immediately with water. Irrigate each eye continuously with normal saline during transport ... Do not use emetics. For ingestion, rinse mouth and administer 5 mL/kg up to 200 mL of water for dilution if the patient can swallow, has a strong gag reflex, and does not drool. Administer activated charcoal ... Treat frostbite with rapid rewarming techniques ... /Aliphatic hydrocarbons and related compounds/

Advanced treatment: Consider orotracheal or nasotracheal intubation for airway control in the patient who is unconscious or in respiratory arrest. Positive-pressure ventilation techniques with a bag-valve-mask device may be beneficial. Monitor cardiac rhythm and treat arrhythmias as necessary ... Start an IV with D5W /SRP: "To keep open", minimal flow rate/. Use lactated Ringer's if signs of hypovolemia are present. Watch for signs of fluid overload. Consider drug therapy for pulmonary edema ... Treat seizures with diazepam (Valium) ... Use proparacaine hydrochloride to assist eye irrigation ... /Aliphatic hydrocarbons and related compounds/

HEPATIC MICROSOMAL CYTOCHROME P-450 FROM PHENOBARBITAL-PRETREATED RATS IS DESTROYED IN VITRO, IN PRESENCE OF NADPH BY 1-HEPTENE. HEPATIC GREEN PIGMENTS FORMED ON ADMIN OF TERMINAL OLEFINS.

STUDY ON MUTAGENIC ACTIVITY OF 1-HEPTENE, USING AMES TEST WITH TA100 STRAIN OF S TYPHIMURIUM, 1-HEPTENE WAS INACTIVE AS A MUTAGEN.

THE HARMFUL EFFECTS OF WATER POLLUTANTS ON PROTOZOA WAS DETERMINED. A STUDY LISTING VARIOUS TOXICITY THRESHOLDS TO URONEMA PARDUCZI REVEALED 1-HEPTENE TO BE LESS THAN 10 MG/L.

1-Heptene's production and use as an organic synthesis reagent may result in its release to the environment through various waste streams. If released to air, a vapor pressure of 59.3 mm Hg at 25 °C indicates 1-heptene will exist solely as a vapor in the ambient atmosphere. Vapor-phase 1-heptene will be degraded in the atmosphere by reaction with photochemically-produced hydroxyl radicals and ozone molecules with atmospheric half-lives of about 9.5 and 16 hours respectively. If released to soil, 1-heptene is expected to have slight mobility based upon an estimated Koc of 3,500. Volatilization from moist soil surfaces is expected to be an important fate process based upon an estimated Henry's Law constant of 0.421 atm-cu m/mole. 1-Heptene may volatilize from dry soil surfaces based upon its vapor pressure. 1-Heptene's linear hydrocarbon structure would suggest that biodegradation is an important process in soil and water. If released into water, 1-heptene is expected to adsorb to suspended solids and sediment in the water column based upon the estimated Koc. Volatilization from water surfaces is expected to be an important fate process based upon this compound's Henry's Law constant. Estimated volatilization half-lives for a model river and model lake are 3 and 94 hours, respectively. An estimated BCF of 630 suggests the potential for bioconcentration in aquatic organisms is high. Occupational exposure to 1-heptene may occur through inhalation and dermal contact with this compound at workplaces where 1-heptene is produced or used. The general population may be exposed to 1-heptene via inhalation of ambient air. (SRC)

1-Heptene's production and use as an organic synthesis reagent(1) may result in its release to the environment through various waste streams(SRC).

TERRESTRIAL FATE: Based on a classification scheme(1), an estimated Koc value of 3,500(SRC), determined from a log Kow of 3.99(2) and a regression-derived equation(3), indicates that 1-heptene is expected to have slight mobility in soil(SRC). Volatilization of 1-heptene from moist soil surfaces is expected to be an important fate process(SRC) given a Henry's Law constant of 0.421 atm-cu m/mole(SRC) determined from a vapor pressure of 59.3 mm Hg(4) and water solubility of 18.2 mg/l at 25 °C(5). The potential for volatilization of 1-heptene from dry soil surfaces may exist(SRC) based upon this compounds vapor pressure(4). 1-Heptene's linear hydrocarbon structure would suggest that biodegradation is an important process in soil(6).

AQUATIC FATE: Based on a classification scheme(1), an estimated Koc value of 3,500(SRC), determined from a log Kow of 3.99(2) and a regression-derived equation(3), indicates that 1-heptene is expected to adsorb to suspended solids and sediment in water(SRC). Volatilization from water surfaces is expected to occur rapidly(3) based upon the Henry's Law constant of 0.421 atm-cu m/mole(SRC) determined from a vapor pressure of 59.3 mm Hg(4) and water solubility of 18.2 mg/l at 25 °C(5). Using this Henry's Law constant and an estimation method(3), volatilization half-lives for a model river and model lake are 3 and 94 hours, respectively(SRC). According to a classification scheme(6), an estimated BCF of 630(SRC), from its log Kow(2) and a regression-derived equation(3), suggests the potential for bioconcentration in aquatic organisms is high(SRC). 1-Heptene's linear hydrocarbon structure would suggest that biodegradation is an important process in water(7).

ATMOSPHERIC FATE: According to a model of gas/particle partitioning of semivolatile organic compounds in the atmosphere(1), 1-heptene, which has a vapor pressure of 59.3 mm Hg at 25 °C(2), is expected to exist solely as a vapor in the ambient atmosphere. Vapor-phase 1-heptene is degraded in the atmosphere by reaction with photochemically-produced hydroxyl radicals(SRC); the half-life for this reaction in air is estimated to be 9.5 hours(SRC), calculated from its rate constant of 4.05X10-11 cu cm/molecule-sec at 25 °C(3). The rate constant for the gas-phase reaction of 1-heptene with ozone has been measured as 1.7X10-17 cu cm/molecule-sec at 25 °C(4). This corresponds to an atmospheric half-life of about 16 hours at an atmospheric concentration of 7X10+11 ozone molecules per cu cm(4).

THE MICROBIAL OXIDATION OF HYDROCARBONS WAS MEASURED BY OXYGRAPHY. PENTANE TO N-OCTANE OXIDIZED WITH INCR IN SPECIFIC ACTIVITY, FOLLOWED BY DECR AS HYDROCARBON CHAIN INCR TO HEPTADECANE. N-ALKENES OXIDIZE @ LOWER RATES THAN N-ALKANES.

Pure cultures isolated from soil and water samples of Yellowstone National Park were unable to utilize 1-heptene as a sole carbon and energy growth source(1). Corynebacterium sp was unable to utilize 1-heptene as a sole carbon and energy growth source(2). However, 1-heptene's linear hydrocarbon structure would suggest that biodegradation is an important process in soil and water(3).

The rate constant for the vapor-phase reaction of 1-heptene with photochemically-produced hydroxyl radicals has been measured as 4.05X10-11 cu cm/molecule-sec at 25 °C(1). This corresponds to an atmospheric half-life of about 9.5 hours at an atmospheric concentration of 5X10+5 hydroxyl radicals per cu cm(1). The rate constant for the vapor-phase reaction of 1-heptene with ozone has been measured as 1.7X10-17 cu cm/molecule-sec at 25 °C(2). This corresponds to an atmospheric half-life of about 16 hours at an atmospheric concentration of 7X10+11 ozone molecules per cu cm(2). 1-Heptene is not expected to undergo hydrolysis in the environment due to the lack of hydrolyzable functional groups(3).

An estimated BCF of 630 was calculated for 1-heptene(SRC), using a log Kow of 3.99(1) and a regression-derived equation(2). According to a classification scheme(3), this BCF suggests the potential for bioconcentration in aquatic organisms is high(SRC).

The Koc of 1-heptene is estimated as 3,500(SRC), using a log Kow of 3.99(1) and a regression-derived equation(2). According to a classification scheme(3), this estimated Koc value suggests that 1-heptene is expected to have slight mobility in soil(SRC).

The Henry's Law constant for 1-heptene is estimated as 0.421 atm-cu m/mole(SRC) from its vapor pressure of 59.3 mm Hg(1) and water solubility of 18.2 mg/l at 25 °C(2). This Henry's Law constant indicates that 1-heptene is expected to volatilize rapidly from water surfaces(3). Based on this Henry's Law constant, the volatilization half-life from a model river (1 m deep, flowing 1 m/sec, wind velocity of 3 m/sec)(2) is estimated as 3 hours(SRC). The volatilization half-life from a model lake (1 m deep, flowing 0.05 m/sec, wind velocity of 0.5 m/sec)(2) is estimated as 94 hours(SRC). 1-Heptene's Henry's Law constant indicates that volatilization from moist soil surfaces may occur(SRC). The potential for volatilization of 1-heptene from dry soil surfaces may exist(SRC) based upon the vapor pressure of this compound(1).

SURFACE WATER: 1-Heptene was identified, not quantified, in 1 of 205 surface water samples obtained at unspecified locations in the US(1).

1-Heptene was detected in the effluent of turbo jet engines operated under varying operating conditions at concns of 0-7.3 ppb(1). 1-Heptene was identified, not quantified, in the volatiles of combusted plastics used primarily for agricultural applications(2). 1-Heptene was identified in 8 of 25 air samples taken from a landfill in Staten Island, NY at a mean concn of 0.20 ppm and a max concn of 1.31 ppm(3).

SOURCE DOMINATED: 1-Heptene was identified, not quantified, in the Allegheny Tunnel, PA in 1979(1). 1-Heptene was detected at a concn of 0.2 mg/cu m in the vicinity of a gasoline station(2).

URBAN/SUBURBAN: 1-Heptene was identified, not quantified, in Leningrad, Russia, Zurich, Switzerland and Houston, TX(1).

RURAL/REMOTE: 1-Heptene was identified, not quantified, in the Sierra Nevada Mountains(1).

1-Heptene was identified, not quantified, in rapeseed oil commonly used for cooking(1).

Occupational exposure to 1-heptene may occur through inhalation and dermal contact with this compound at workplaces where 1-heptene is produced or used. The general population may be exposed to 1-heptene via inhalation of ambient air. (SRC)

1-Heptene's production and use as an organic synthesis reagent may result in its release to the environment through various waste streams. If released to air, a vapor pressure of 59.3 mm Hg at 25 °C indicates 1-heptene will exist solely as a vapor in the ambient atmosphere. Vapor-phase 1-heptene will be degraded in the atmosphere by reaction with photochemically-produced hydroxyl radicals and ozone molecules with atmospheric half-lives of about 9.5 and 16 hours respectively. If released to soil, 1-heptene is expected to have slight mobility based upon an estimated Koc of 3,500. Volatilization from moist soil surfaces is expected to be an important fate process based upon an estimated Henry's Law constant of 0.421 atm-cu m/mole. 1-Heptene may volatilize from dry soil surfaces based upon its vapor pressure. 1-Heptene's linear hydrocarbon structure would suggest that biodegradation is an important process in soil and water. If released into water, 1-heptene is expected to adsorb to suspended solids and sediment in the water column based upon the estimated Koc. Volatilization from water surfaces is expected to be an important fate process based upon this compound's Henry's Law constant. Estimated volatilization half-lives for a model river and model lake are 3 and 94 hours, respectively. An estimated BCF of 630 suggests the potential for bioconcentration in aquatic organisms is high. Occupational exposure to 1-heptene may occur through inhalation and dermal contact with this compound at workplaces where 1-heptene is produced or used. The general population may be exposed to 1-heptene via inhalation of ambient air. (SRC)

1-Heptene's production and use as an organic synthesis reagent(1) may result in its release to the environment through various waste streams(SRC).

TERRESTRIAL FATE: Based on a classification scheme(1), an estimated Koc value of 3,500(SRC), determined from a log Kow of 3.99(2) and a regression-derived equation(3), indicates that 1-heptene is expected to have slight mobility in soil(SRC). Volatilization of 1-heptene from moist soil surfaces is expected to be an important fate process(SRC) given a Henry's Law constant of 0.421 atm-cu m/mole(SRC) determined from a vapor pressure of 59.3 mm Hg(4) and water solubility of 18.2 mg/l at 25 °C(5). The potential for volatilization of 1-heptene from dry soil surfaces may exist(SRC) based upon this compounds vapor pressure(4). 1-Heptene's linear hydrocarbon structure would suggest that biodegradation is an important process in soil(6).

AQUATIC FATE: Based on a classification scheme(1), an estimated Koc value of 3,500(SRC), determined from a log Kow of 3.99(2) and a regression-derived equation(3), indicates that 1-heptene is expected to adsorb to suspended solids and sediment in water(SRC). Volatilization from water surfaces is expected to occur rapidly(3) based upon the Henry's Law constant of 0.421 atm-cu m/mole(SRC) determined from a vapor pressure of 59.3 mm Hg(4) and water solubility of 18.2 mg/l at 25 °C(5). Using this Henry's Law constant and an estimation method(3), volatilization half-lives for a model river and model lake are 3 and 94 hours, respectively(SRC). According to a classification scheme(6), an estimated BCF of 630(SRC), from its log Kow(2) and a regression-derived equation(3), suggests the potential for bioconcentration in aquatic organisms is high(SRC). 1-Heptene's linear hydrocarbon structure would suggest that biodegradation is an important process in water(7).

ATMOSPHERIC FATE: According to a model of gas/particle partitioning of semivolatile organic compounds in the atmosphere(1), 1-heptene, which has a vapor pressure of 59.3 mm Hg at 25 °C(2), is expected to exist solely as a vapor in the ambient atmosphere. Vapor-phase 1-heptene is degraded in the atmosphere by reaction with photochemically-produced hydroxyl radicals(SRC); the half-life for this reaction in air is estimated to be 9.5 hours(SRC), calculated from its rate constant of 4.05X10-11 cu cm/molecule-sec at 25 °C(3). The rate constant for the gas-phase reaction of 1-heptene with ozone has been measured as 1.7X10-17 cu cm/molecule-sec at 25 °C(4). This corresponds to an atmospheric half-life of about 16 hours at an atmospheric concentration of 7X10+11 ozone molecules per cu cm(4).

THE MICROBIAL OXIDATION OF HYDROCARBONS WAS MEASURED BY OXYGRAPHY. PENTANE TO N-OCTANE OXIDIZED WITH INCR IN SPECIFIC ACTIVITY, FOLLOWED BY DECR AS HYDROCARBON CHAIN INCR TO HEPTADECANE. N-ALKENES OXIDIZE @ LOWER RATES THAN N-ALKANES.

Pure cultures isolated from soil and water samples of Yellowstone National Park were unable to utilize 1-heptene as a sole carbon and energy growth source(1). Corynebacterium sp was unable to utilize 1-heptene as a sole carbon and energy growth source(2). However, 1-heptene's linear hydrocarbon structure would suggest that biodegradation is an important process in soil and water(3).

The rate constant for the vapor-phase reaction of 1-heptene with photochemically-produced hydroxyl radicals has been measured as 4.05X10-11 cu cm/molecule-sec at 25 °C(1). This corresponds to an atmospheric half-life of about 9.5 hours at an atmospheric concentration of 5X10+5 hydroxyl radicals per cu cm(1). The rate constant for the vapor-phase reaction of 1-heptene with ozone has been measured as 1.7X10-17 cu cm/molecule-sec at 25 °C(2). This corresponds to an atmospheric half-life of about 16 hours at an atmospheric concentration of 7X10+11 ozone molecules per cu cm(2). 1-Heptene is not expected to undergo hydrolysis in the environment due to the lack of hydrolyzable functional groups(3).

An estimated BCF of 630 was calculated for 1-heptene(SRC), using a log Kow of 3.99(1) and a regression-derived equation(2). According to a classification scheme(3), this BCF suggests the potential for bioconcentration in aquatic organisms is high(SRC).

The Koc of 1-heptene is estimated as 3,500(SRC), using a log Kow of 3.99(1) and a regression-derived equation(2). According to a classification scheme(3), this estimated Koc value suggests that 1-heptene is expected to have slight mobility in soil(SRC).

The Henry's Law constant for 1-heptene is estimated as 0.421 atm-cu m/mole(SRC) from its vapor pressure of 59.3 mm Hg(1) and water solubility of 18.2 mg/l at 25 °C(2). This Henry's Law constant indicates that 1-heptene is expected to volatilize rapidly from water surfaces(3). Based on this Henry's Law constant, the volatilization half-life from a model river (1 m deep, flowing 1 m/sec, wind velocity of 3 m/sec)(2) is estimated as 3 hours(SRC). The volatilization half-life from a model lake (1 m deep, flowing 0.05 m/sec, wind velocity of 0.5 m/sec)(2) is estimated as 94 hours(SRC). 1-Heptene's Henry's Law constant indicates that volatilization from moist soil surfaces may occur(SRC). The potential for volatilization of 1-heptene from dry soil surfaces may exist(SRC) based upon the vapor pressure of this compound(1).

SURFACE WATER: 1-Heptene was identified, not quantified, in 1 of 205 surface water samples obtained at unspecified locations in the US(1).

1-Heptene was detected in the effluent of turbo jet engines operated under varying operating conditions at concns of 0-7.3 ppb(1). 1-Heptene was identified, not quantified, in the volatiles of combusted plastics used primarily for agricultural applications(2). 1-Heptene was identified in 8 of 25 air samples taken from a landfill in Staten Island, NY at a mean concn of 0.20 ppm and a max concn of 1.31 ppm(3).

SOURCE DOMINATED: 1-Heptene was identified, not quantified, in the Allegheny Tunnel, PA in 1979(1). 1-Heptene was detected at a concn of 0.2 mg/cu m in the vicinity of a gasoline station(2).

URBAN/SUBURBAN: 1-Heptene was identified, not quantified, in Leningrad, Russia, Zurich, Switzerland and Houston, TX(1).

RURAL/REMOTE: 1-Heptene was identified, not quantified, in the Sierra Nevada Mountains(1).

1-Heptene was identified, not quantified, in rapeseed oil commonly used for cooking(1).

Occupational exposure to 1-heptene may occur through inhalation and dermal contact with this compound at workplaces where 1-heptene is produced or used. The general population may be exposed to 1-heptene via inhalation of ambient air. (SRC)

SRP: At the time of review, criteria for land treatment or burial (sanitary landfill) disposal practices are subject to significant revision. Prior to implementing land disposal of waste residue (including waste sludge), consult with environmental regulatory agencies for guidance on acceptable disposal practices.

/GUIDE 128: FLAMMABLE LIQUIDS (NON-POLAR/WATER-IMMISCIBLE)/ Fire or Explosion: HIGHLY FLAMMABLE: Will be easily ignited by heat, sparks or flames. Vapors may form explosive mixtures with air. Vapors may travel to source of ignition and flash back. Most vapors are heavier than air. They will spread along ground and collect in low or confined areas (sewers, basements, tanks). Vapor explosion hazard indoors, outdoors or in sewers. Those substances designated with a "P" may polymerize explosively when heated or involved in a fire. Runoff to sewer may create fire or explosion hazard. Containers may explode when heated. Many liquids are lighter than water. Substances may be transported hot.

/GUIDE 128: FLAMMABLE LIQUIDS (NON-POLAR/WATER-IMMISCIBLE)/ Health: Inhalation or contact with material may irritate or burn skin and eyes. Fire may produce irritating, corrosive and/or toxic gases. Vapors may cause dizziness or suffocation. Runoff from fire control or dilution water may cause pollution.

/GUIDE 128: FLAMMABLE LIQUIDS (NON-POLAR/WATER-IMMISCIBLE)/ Public Safety: CALL Emergency Response Telephone Number ... . As an immediate precautionary measure, isolate spill or leak area for at least 50 meters (150 feet) in all directions. Keep unauthorized personnel away. Stay upwind. Keep out of low areas. Ventilate closed spaces before entering.

/GUIDE 128: FLAMMABLE LIQUIDS (NON-POLAR/WATER-IMMISCIBLE)/ Protective Clothing: Wear positive pressure self-contained breathing apparatus (SCBA). Structural firefighters' protective clothing will only provide limited protection.

For more DOT Emergency Guidelines (Complete) data for 1-HEPTENE (8 total), please visit the HSDB record page.

No person may /transport,/ offer or accept a hazardous material for transportation in commerce unless that person is registered in conformance ... and the hazardous material is properly classed, described, packaged, marked, labeled, and in condition for shipment as required or authorized by ... /the hazardous materials regulations (49 CFR 171-177)./

The International Maritime Dangerous Goods Code lays down basic principles for transporting hazardous chemicals. Detailed recommendations for individual substances and a number of recommendations for good practice are included in the classes dealing with such substances. A general index of technical names has also been compiled. This index should always be consulted when attempting to locate the appropriate procedures to be used when shipping any substance or article.

Flammable Liquid