| Section 1. Identification | |||
|---|---|---|---|
| Chemical Name | strontium | CAS No. | 7440-24-6 |
| Synonyms | — | Chinese Name | 锶 |
| Molecular Formula | Sr | Molecular Weight | 87.62 |
| UN No. | 3208 | Data Source | PubChem (NIH/NLM) |
| GHS Hazard Classification | |
|---|---|
| Signal Word | DANGER |
| Pictograms | GHS02 · Flammable GHS05 · Corrosive GHS07 · Irritant GHS08 · Health Hazard |
| Hazard Statements | H260H314H315H318H250 |
| Precautionary Statements | P203P223P231+P232P260P264P264+P265P280P301+P330+P331P302+P335+P334P302+P352P302+P361+P354P304+P340P305+P354+P338P316P317P318P321P332+P317P362+P364P363P370+P378P402+P404P405P501P210P222P231P233 |
| Contents | |||
|---|---|---|---|
| Section 2 | Hazards Identification | Section 4 | First-Aid Measures |
| Section 5 | Fire-Fighting Measures | Section 6 | Accidental Release Measures |
| Section 7 | Handling and Storage | Section 8 | Exposure Controls / Personal Protection |
| Section 9 | Physical and Chemical Properties | Section 10 | Stability and Reactivity |
| Section 11 | Toxicological Information | Section 12 | Ecological Information |
| Section 13 | Disposal Considerations | ||
This chemical does not meet GHS hazard criteria for 17.1% (52 of 304) of reports.
H260 (80.6%): In contact with water releases flammable gases which may ignite spontaneously [Danger Substances and mixtures which in contact with water, emit flammable gases]
H314 (52.3%): Causes severe skin burns and eye damage [Danger Skin corrosion/irritation]
H315 (14.5%): Causes skin irritation [Warning Skin corrosion/irritation]
H318 (52.3%): Causes serious eye damage [Danger Serious eye damage/eye irritation]
H360D (48%): May damage the unborn child [Danger Reproductive toxicity]
P203, P223, P231+P232, P260, P264, P264+P265, P280, P301+P330+P331, P302+P335+P334, P302+P352, P302+P361+P354, P304+P340, P305+P354+P338, P316, P317, P318, P321, P332+P317, P362+P364, P363, P370+P378, P402+P404, P405, and P501 (click each P-code to see the statement)
Aggregated GHS information provided per 304 reports by companies from 11 notifications to the ECHA C&L Inventory. Each notification may be associated with multiple companies.
Reported as not meeting GHS hazard criteria per 52 of 304 reports by companies.
There are 9 notifications provided by 252 of 304 reports by companies with hazard statement code(s).
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.
H250: Catches fire spontaneously if exposed to air [Danger Pyrophoric liquids]
P210, P222, P231, P233, P280, P302+P335+P334, and P370+P378 (click each P-code to see the statement)
Fresh air, rest.
Rinse skin with plenty of water or shower.
Rinse mouth.
NO water. Use dry sand, special powder.
Personal protection: particulate filter respirator adapted to the airborne concentration of the substance. Do NOT let this chemical enter the environment. Sweep spilled substance into covered sealable containers.
SRP: The most favorable course of action is to use an alternative chemical product with less inherent propensity for occupational exposure or environmental contamination. Recycle any unused portion of the material for its approved use or return it to the manufacturer or supplier. Ultimate disposal of the chemical must consider: the material's impact on air quality; potential migration in soil or water; effects on animal, aquatic, and plant life; and conformance with environmental and public health regulations.
Dissolve in a minimum amount of 6 molar hydrochloric acid and filter. Add filtrate to slight amount of 6 molar ammonium hydroxide by use of the litmus test. Precipitate with sufficient sodium carbonate. After filtration, wash and dry the ppt.
Processing of strontium should be carried out in enclosed plant and suitable ventilation and thermal insulation should be provided in working premises.
SRP: Contaminated protective clothing should be segregated in such a manner so that there is no direct personal contact by personnel who handle, dispose, or clean the clothing. Quality assurance to ascertain the completeness of the cleaning procedures should be implemented before the decontaminated protective clothing is returned for reuse by the workers. Contaminated clothing should not be taken home at end of shift, but should remain at employee's place of work for cleaning.
Dry. Keep under inert gas. Well closed. Keep in a well-ventilated room. Store in an area without drain or sewer access.
It should be kept under kerosene to prevent oxidation.
Metallic strontium ... should be stored in a cool, well ventilated place, away from organic and other easily oxidizable material.
... Store under naphtha.
Protect containers against physical damage. Store under liquid containing no oxygen.
1.2 [mg/m3]
13 [mg/m3]
79 [mg/m3]
A nuisance-causing concentration of airborne particles can be reached quickly when dispersed.
Wear rubber gloves, safety glasses and working clothes.
NO contact with water.
PREVENT DISPERSION OF DUST!
Use ventilation.
Protective gloves.
Wear safety spectacles.
Do not eat, drink, or smoke during work.
Other Solid
Silvery-white metal that becomes yellow on contact with air; [Merck Index]
SILVERY-WHITE SOLID IN VARIOUS FORMS.
Silvery white metal; face-centered cubic structure
Pale yellow soft metal
1382 °C @760 [mm Hg]
Soluble in alcohol and acids.
Solubility in water: reaction
2.54 g/cu cm
2.64 g/cm³
2.64 @25 °C
4.99X10-11 Pa at 400 K; 0.000429 Pa at 600 K; 1.134 Pa at 800 K; 121 Pa at 1000 K
Rapidly becomes yellow on exposure to air and assumes an oxide film.
Natural strontium is a mixture of four isotopes; 32 other unstable isotopes are known to exist. Three allotropic forms exist, with transition points at 235 and 540 °C.
Alkaline earth metal; valence of 2; 4 stable isotopes with atomic weights of: 88 (82.56%), 86 (9.86%), 87 (7.02%), 84 (0.56%); heated metal combines with hydrogen to form strontium hydride and with nitrogen to form strontium nitride.
Decomposes water on contact /Reacts with water to evolve hydrogen/
Standard enthalpy of formation at 298.15 K, 0.0 kJ/mol (crystal); entropy at 298.15 K, 55 J/mol-K (crystal); Heat capacity, 26.8 J/mol-K (crystal). Standard enthalpy of formation at 298.15 K,164.4 kJ/mol (gas phase); Gibbs free energy of formation, 130.9 kJ/mol (gas phase); entropy at 298.15 K, 164.6 J/mol-K (gas phase); Heat capacity 20.8 J/mol-K (gas phase).
For more Other Experimental Properties (Complete) data for STRONTIUM, ELEMENTAL (6 total), please visit the HSDB record page.
electron density of states
dielectric constant
electromagnetic induction
optical coefficient
crystal structure
fusion temperature
Debye frequency
deformation parameter
dielectricity
enthalpy
radiation
electron-phonon interaction
electrode potential
isothermal section
molar conductivity
Gibbs energy
Lorenz number
lattice strain
positional coordinate
thermoelectric power
absorption coefficient
spectral factor
Powdered metallic strontium may constitute a fire and explosion hazard due to the fact that strontium reacts with water to evolve hydrogen; there is the hazard of a gas explosion when the metal is stored in presence of moisture.
Reacts with ... alcohol, acetoacetic acid and aniline to form hydrogen.
Reaction with halogens may lead to ignition. Vigorous reaction on contact with oxidizing materials.
The heated metal combines with hydrogen to form strontium hydride and with nitrogen to form strontium nitride.
Undergoes reactions characteristic of alkaline earth metals. Strong reducing agent.
CDC-ATSDR Toxicological Profile
Strontium
Musculoskeletal
6 x 10 ^-1 mg/kg-day
Trace element
Smith, C.D. and Nowell, L.H., 2024. Health-Based Screening Levels for evaluating water-quality data (3rd ed.). DOI:10.5066/F71C1TWP
The substance can be absorbed into the body by inhalation of its aerosol.
Developmental (effects while organs are developing), Hematological (Blood Forming), Musculoskeletal (Muscles and Skeleton)
IRIS Current
ATSDR Final
Basic treatment: Establish a patent airway. Suction if necessary. Watch for signs of respiratory insufficiency and assist ventilations if needed. Administer oxygen by nonrebreather mask at 10 to 15 L/min. Monitor for pulmonary edema and treat if necessary ... . Monitor for shock and treat if necessary ... . Anticipate seizures and treat if 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 ... . Cover skin burns with dry sterile dressings after decontamination ... . /Poison A and B/
Advanced treatment: Consider orotracheal or nasotracheal intubation for airway control in the patient who is unconscious, has severe pulmonary edema, or is in respiratory arrest. Positive pressure ventilation techniques with a bag valve mask device may be beneficial. Consider drug therapy for pulmonary edema ... . Monitor cardiac rhythm and treat arrhythmias as necessary ... . Start an IV with D5W TKO /"To keep open", minimal flow rate/. Use lactated Ringer's if signs of hypovolemia are present. Watch for signs of fluid overload. For hypotension with signs of hypovolemia, administer fluid cautiously. Watch for signs of fluid overload ... . Treat seizures with diazepam (Valium) ... . Use proparacaine hydrochloride to assist eye irrigation ... . /Poison A and B/
4.70e+04
7.00e+05
1.20e+04
4.00e+03
4.20e+02
6.00e-01
Volatile
1.40e+05
2.10e+06
3.60e+04
Bioaccumulation of this chemical may occur along the food chain.
4.70e+04
7.00e+05
1.20e+04
4.00e+03
4.20e+02
6.00e-01
Volatile
1.40e+05
2.10e+06
3.60e+04
Bioaccumulation of this chemical may occur along the food chain.
SRP: The most favorable course of action is to use an alternative chemical product with less inherent propensity for occupational exposure or environmental contamination. Recycle any unused portion of the material for its approved use or return it to the manufacturer or supplier. Ultimate disposal of the chemical must consider: the material's impact on air quality; potential migration in soil or water; effects on animal, aquatic, and plant life; and conformance with environmental and public health regulations.
Dissolve in a minimum amount of 6 molar hydrochloric acid and filter. Add filtrate to slight amount of 6 molar ammonium hydroxide by use of the litmus test. Precipitate with sufficient sodium carbonate. After filtration, wash and dry the ppt.