English Safety Data Sheet Database 中文版 MSDS

2-methylquinoline

CAS No. 91-63-4 | PubChem CID 7060
Section 1. Identification
Chemical Name2-methylquinoline CAS No.91-63-4
Synonymsquinaldine Chinese Name2-甲基喹啉
Molecular FormulaC0HgN Molecular Weight143.1852
UN No. Data SourcePubChem (NIH/NLM)
GHS Hazard Classification
Signal Word WARNING
Pictograms GHS07 · Irritant GHS08 · Health Hazard
Hazard Statements H302H312H315H319H341H412
Precautionary Statements P203P264P264+P265P270P273P280P301+P317P302+P352P305+P351+P338P317P318P321P330P332+P317P337+P317P362+P364P405P501

Section 2. Hazards Identification

H302+H312 (26.8%): Harmful if swallowed or in contact with skin [Warning Acute toxicity, oral; acute toxicity, dermal]

H302 (100%): Harmful if swallowed [Warning Acute toxicity, oral]

H312 (100%): Harmful in contact with skin [Warning Acute toxicity, dermal]

H315 (29.3%): Causes skin irritation [Warning Skin corrosion/irritation]

H319 (89.5%): Causes serious eye irritation [Warning Serious eye damage/eye irritation]

H341 (28.3%): Suspected of causing genetic defects [Warning Germ cell mutagenicity]

H412 (28.1%): Harmful to aquatic life with long lasting effects [Hazardous to the aquatic environment, long-term hazard]

P203, P264, P264+P265, P270, P273, P280, P301+P317, P302+P352, P305+P351+P338, P317, P318, P321, P330, P332+P317, P337+P317, P362+P364, P405, and P501 (click each P-code to see the statement)

Aggregated GHS information provided per 392 reports by companies from 6 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.

H302: Harmful if swallowed [Warning Acute toxicity, oral]

H312: Harmful in contact with skin [Warning Acute toxicity, dermal]

H319: Causes serious eye irritation [Warning Serious eye damage/eye irritation]

P264, P264+P265, P270, P280, P301+P317, P302+P352, P305+P351+P338, P317, P321, P330, P337+P317, P362+P364, and P501 (click each P-code to see the statement)

Section 4. First-Aid Measures

EYES: First check the victim for contact lenses and remove if present. Flush victim's eyes with water or normal saline solution for 20 to 30 minutes while simultaneously calling a hospital or poison control center. Do not put any ointments, oils, or medication in the victim's eyes without specific instructions from a physician. IMMEDIATELY transport the victim after flushing eyes to a hospital even if no symptoms (such as redness or irritation) develop.

SKIN: IMMEDIATELY flood affected skin with water while removing and isolating all contaminated clothing. Gently wash all affected skin areas thoroughly with soap and water. If symptoms such as redness or irritation develop, IMMEDIATELY call a physician and be prepared to transport the victim to a hospital for treatment.

INHALATION: IMMEDIATELY leave the contaminated area; take deep breaths of fresh air. If symptoms (such as wheezing, coughing, shortness of breath, or burning in the mouth, throat, or chest) develop, call a physician and be prepared to transport the victim to a hospital. Provide proper respiratory protection to rescuers entering an unknown atmosphere. Whenever possible, Self-Contained Breathing Apparatus (SCBA) should be used; if not available, use a level of protection greater than or equal to that advised under Protective Clothing.

INGESTION: DO NOT INDUCE VOMITING. If the victim is conscious and not convulsing, give 1 or 2 glasses of water to dilute the chemical and IMMEDIATELY call a hospital or poison control center. Be prepared to transport the victim to a hospital if advised by a physician. If the victim is convulsing or unconscious, do not give anything by mouth, ensure that the victim's airway is open and lay the victim on his/her side with the head lower than the body. DO NOT INDUCE VOMITING. IMMEDIATELY transport the victim to a hospital. (NTP, 1992)

Section 9. Physical and Chemical Properties

Quinaldine appears as a colorless oily liquid darkening to red-brown on exposure to air. Flash point 175 °F. Denser than water and slightly soluble in water. Vapors heavier than air. Produces toxic oxides of nitrogen during combustion. Used to make dyes, pharmaceuticals and other chemicals.

Colorless oily liquid with an odor of quinoline; Turns reddish-brown on exposure to air; [Merck Index]

477.7 °F at 760 mmHg (NTP, 1992)

246.00 to 248.00 °C. @ 760.00 mm Hg

28 °F (NTP, 1992)

175 °F (NTP, 1992)

1.0585 at 68 °F (NTP, 1992) - Denser than water; will sink

0.00946 [mmHg]

126.2 Ų [M+H]+ [CCS Type: DT; Buffer gas: N2; Ionization: ESI+; Dataset: TOXCAST; Source Identifier: DTXSID3040271]

125.2 Ų [M+H]+ [CCS Type: DT; Buffer gas: N2; Ionization: APCI+; Dataset: TOXCAST; Source Identifier: DTXSID3040271]

15N nuclear magnetic resonance spectrum

Boiling point

Chemical diffusion

Chemical shift

Diamagnetic susceptibility

Dielectric constant

Diffusion

Diffusive flux

Heat of sublimation

Magnetic susceptibility

Nuclear magnetic resonance

Optical coefficient

Refractive index

Sound absorption

Sound propagation

Sound velocity

Spin-spin coupling constant

Vapor pressure

Viscosity

Nitrogen Compounds -> Quinolines

Fragrance Ingredient (2-Methyl quinoline) -> IFRA transparency List

Section 10. Stability and Reactivity

Slightly soluble in water.

Amines, Phosphines, and Pyridines

QUINALDINE neutralizes acids in exothermic reactions to form salts plus water. May be incompatible with isocyanates, halogenated organics, peroxides, phenols (acidic), epoxides, anhydrides, and acid halides. Flammable gaseous hydrogen may be generated in combination with strong reducing agents, such as hydrides. Keep tightly closed and protected from light (NTP, 1992).

Source: PubChem CID 7060 (NIH/NLM, public domain). Retrieved from PubChem, a public-domain chemistry database maintained by the U.S. National Library of Medicine. Last updated: 2026-08-02 09:45:12.
Disclaimer: This information is compiled for reference only and does not replace the manufacturer's official Safety Data Sheet. Always consult the supplier's SDS before handling any chemical.