Properties: White crystal with unpleasant odor.

Melting point/℃: 42.8

Solubility: Soluble in water, ethanol, benzene, ether

Boiling point / ℃: 217

Relative density (water = 1) 1.30

Saturated vapor pressure / kPa: 0.13/49.8℃

Relative density (air = 1)

Combustion and explosion
Risk

Flammability: Combustible

Combustion decomposition products: Carbon monoxide, carbon dioxide, hydrogen chloride

Flash point / ℃: 115

Hazardous polymerization can occur:

Explosive limit (volume fraction)

Stability: Stable

Autoignition temperature / ℃:

Incompatible materials: Strong oxidants, strong acids, acid chlorides, acid anhydrides.

Hazardous characteristics: Combustible with fire and heat. Can react with strong oxidants. Decompose and generate toxic corrosive gas at high temperature.

Extinguishing agent: Water spray, foam, carbon dioxide, dry power and sand.

Occupational hazard classification: Class I, extremely hazardous;
LD50：670mg/kg (Rat inhalation); 1500mg/kg (Rabbit percutaneous)
LC50：11mg/m3 (Rat inhalation)

Emergency treatment

Skin contact: Immediately remove contaminated clothing, wash thoroughly with soap and water.
Eye contact: Immediately filed eyelid, rinse with plenty of water or saline.
Inhalation: Rapidly leave the scene to place with fresh air. Keep airway patency. Make artificial respiration if necessary and take medical treatment.

Protection

Respiratory protection: In high concentration air, wear gas mask. Emergency rescue or escape, wear self-contained breathing apparatus.
Eye protection: Wear chemical safety glasses.
Protective clothing: Wear appropriate protective clothing.
Hand protection: Wear anti-chemical gloves.

Leakage treatment

Isolate leakage polluted area, set warning signs around. Suggest emergency personnel wear gas mask, chemical protective clothing and do not direct contact with leakage. Mix with sand, dry lime or soda ash, collect in dry and covered container with clean shovel and move to waste disposal site. Also can rinse with a lot of water. Put the diluted washing water to waste water system. For large leakage, abandon after recycling or biosafety disposal.

Storage and transportation

Stored in a cool and ventilated warehouse. Away from fire, heat source and direct sunlight. Keep container sealed. Keep separate from oxidants and alternate chemical materials. Handle gently to avoid damage of packaging and container. Pay attention to personal protection in packing and handling operations.