Aziridine

CAS 151-56-4 C₂H₅N MW 43.1000 Danger
NIOSH Potential Occupational Carcinogen
Flame Flame
Corrosion Corrosion
Skull and Crossbones Skull and Crossbones
Exclamation Mark Exclamation Mark
Health Hazard Health Hazard
Emergency: 911 | Poison Control: 1-800-222-1222

Hazard Statements

CodeStatementHazard Class
H225 Highly Flammable liquid and vapor Flammable liquids
H300 Fatal if swallowed Acute toxicity, oral
H310 Fatal in contact with skin Acute toxicity, dermal
H314 Causes severe skin burns and eye damage Skin corrosion/irritation
H317 May cause an allergic skin reaction Sensitization, Skin
H318 Causes serious eye damage Serious eye damage/eye irritation
H330 Fatal if inhaled Acute toxicity, inhalation
H335 May cause respiratory irritation Specific target organ toxicity, single exposure; Respiratory tract irritation
H340 May cause genetic defects Germ cell mutagenicity
H351 Suspected of causing cancer Carcinogenicity
H361 Suspected of damaging fertility or the unborn child Reproductive toxicity
H370 Causes damage to organs Specific target organ toxicity, single exposure
H372 Causes damage to organs through prolonged or repeated exposure Specific target organ toxicity, repeated exposure

Precautionary Statements

CodeStatement
P203 Obtain, read and follow all safety instructions before use.
P210 Keep away from heat, hot surface, sparks, open flames and other ignition sources. No smoking.
P233 Keep container tightly closed.
P240 Ground/bond container and receiving equipment.
P241 Use explosion-proof [electrical/ventilating/lighting/.../] equipment.
P242 Use only non-sparking tools.
P243 Take precautionary measures against static discharge.
P260 Do not breathe dust/fume/gas/mist/vapors/spray.
P261 Avoid breathing dust/fume/gas/mist/vapors/spray.
P262 Do not get in eyes, on skin, or on clothing.
P264 Wash hands [and ...] thoroughly after handling.
P264+P265 Wash hands [and ...] thoroughly after handling. Do not touch eyes.
P270 Do not eat, drink or smoke when using this product.
P271 Use only outdoors or in a well-ventilated area.
P272 Contaminated work clothing should not be allowed out of the workplace.
P280 Wear protective gloves/protective clothing/eye protection/face protection/hearing protection/...
P284 [In case of inadequate ventilation] Wear respiratory protection.
P301+P316 IF SWALLOWED: Get emergency medical help immediately.
P301+P330+P331 IF SWALLOWED: Rinse mouth. Do NOT induce vomiting.
P302+P352 IF ON SKIN: wash with plenty of water/...
P302+P361+P354 IF ON SKIN: Take off Immediately all contaminated clothing. Immediately rinse with water for several minutes.
P303+P361+P353 IF ON SKIN (or hair): Take off Immediately all contaminated clothing. Rinse SKIN with water [or shower].
P304+P340 IF INHALED: Remove person to fresh air and keep comfortable for breathing.
P305+P354+P338 IF IN EYES: Immediately rinse with water for several minutes. Remove contact lenses if present and easy to do. Continue rinsing.
P308+P316 IF exposed or concerned: Get emergency medical help immediately.
P316 Get emergency medical help immediately.
P317 Get emergency medical help.
P318 if exposed or concerned, get medical advice.
P319 Get medical help if you feel unwell.
P320 Specific treatment is urgent (see ... on this label).
P321 Specific treatment (see information on this label and safety datasheet)).
P330 Rinse mouth.
P333+P317 If skin irritation or rash occurs: Get medical help.
P361+P364 Take off immediately all contaminated clothing and wash it before reuse.
P362+P364 Take off contaminated clothing and wash it before reuse.
P363 Wash contaminated clothing before reuse.
P370+P378 In case of fire: Use ... to extinguish.
P403+P233 Store in a well-ventilated place. Keep container tightly closed.
P403+P235 Store in a well-ventilated place. Keep cool.
P405 Store locked up.
P501 Dispose of contents/container to ...

Exposure Limits

NIOSH IDLH100 ppm
Skin NotationYes — can be absorbed through skin

Physical Properties

Colorless liquid with an ammonia-like odor.

Boiling Point133°F
Flash Point12°F
Vapor Pressure160 mmHg
Specific Gravity0.83

NFPA 704 Diamond

3
4
3
Health Fire Reactivity

Synonyms

aminoethylene; azirane; aziridine; dimethyleneimine; dimethylenimine; ethylenimine (inhibited); ethylimine

Data Sources

Disclaimer: This information is compiled from public regulatory databases for reference only. It does not replace the manufacturer's Safety Data Sheet (SDS). Always consult the official SDS for your specific product before handling chemicals.

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