CAS No. 32061, Molecular Formula C2H6O
colorless liquid with flavor; vapor pressure 5.33kPa/19 ° C a flash point of 12 ° C; melting point - 114.1 ° C; boiling point of 78.3 ° C; solubility : Compatibility with water, immiscible in the ether, chloroform, the majority of glycerol organic solvents; density : relative density (water = 1) 0.79; the relative density (Air = 1) 1.59 ; Stability : stability; risk Marker 7 (flammable liquids); the main purposes : for the alcoholic beverage industry, organic synthesis, solvent used to disinfect
2. The impact on the environment :
a health hazard
pathways : inhaled, ingested, percutaneous absorption.
health hazards : Cymbalta central nervous system depressants. First caused excitement, and then inhibited.
acute poisoning : acute poisoning occurred in oral. The general can be divided into excited, hypnotic, narcotic, suffocating four stages. Patients entered the third or fourth stage, loss of consciousness, the pupil to expand, breathing irregularities and shock, circulatory failure and the efforts to stop breathing.
chronic effects : in the production of medium and long-term exposure to high concentrations arising from the onset of the nose, eyes, mucous membrane irritation and headache, dizziness, fatigue, easily agitated, tremor, nausea. Long-term alcohol abuse can cause polyneuropathy, chronic gastritis, fatty liver, cirrhosis of the liver, cardiac damage and organic mental illness. Long-term exposure to the skin can cause drying, scaling, rhagadia and dermatitis.
two, toxicology information and environmental behavior
toxicity : Micro is a drug category.
acute toxicity : LD507060mg/kg (rabbit oral); 7340mg/kg (percutaneous rabbit); LC5037620mg/m3, 10 hours (rat inhalation ); inhalation 4.3mg / L × 50 minutes, the first facial fever, a cold extremities, headache; inhalation : / L × 39 minutes, headache, be without effect.
irritation : a rabbit eyes : 500mg, severe stimulation. Rabbits open percutaneous stimulation test : 15mg/24 hour, a mild irritant.
subacute and chronic toxicity : rats mouth of 10.2 g / (kg day) for 12 weeks, weight loss, fat liver.
Mutagenicity : microbial mutagenicity : Salmonella typhimurium negative. Dominant lethal test : a mouse oral ~ 1.5 / (kg day), 2 weeks, the positive.
reproductive toxicity : Rats were poisoning the lowest concentration (TDL0) : Jinan (progesterone 9 days), teratogenesis positive.
carcinogenicity : mouse oral poisoning lowest dose (TDL0) : 340mg/kg (57 weeks, intermittent), were carcinogenic.
hazardous characteristics : flammable vapor and air can form explosive mixtures. Case fire, high-heat combustion caused the explosion. Oxidants contact with a chemical reaction or cause a fire. In the scene, heating containers risk of explosion. Its vapor is heavier than air, will spread to the lower Department of considerable local and met the fire will generate a return to burning.
combustion (decomposition) products : carbon monoxide, carbon dioxide.
3. Emergency Monitoring Methods :
gas detector tube; The portable gas chromatography
gas velocity measurement tube (Beijing by the insurance products)
4. Laboratory monitoring methods : gas chromatography
"air and emission monitoring and analysis methods," the State Environmental Protection Administration Part
GC "Solid Waste Assessment Test and Analysis Handbook" China Environmental Monitoring terminus translation
K2Cr2O7 "chemical substances harmful air Determination," the chemical industry publishers
5. Environmental standards :
former Soviet air workshop harmful substances maximum allowable concentration 1000mg/m3
the former Soviet Union (1977) air quality standards 5.0mg/m3
olfactory threshold concentration 50ppm
6. Emergency treatment and disposal methods :
a leakage contingency
rapid withdrawal from air leakage personnel to a safe area, and isolation and strict restrictions on access. Cut off the fire source. Recommended emergency personnel wearing respirators-positive pressure self-sufficiency, wearing fire protective clothing. Do not direct contact with leakage. As far as possible, cut off the source of leakage, prevent access to sewers, flood discharge trench so restrictive space. A small leak : sand or other materials Unburning adsorption or absorption. We could also use a lot of water washing, lotion diluted Add to the wastewater system. Large leak : to build a causeway or trenching asylum; Foam coverage, lower vapor disasters. Ex pump used to transfer tankers or exclusive collection devices. Recovery or shipped to the disposal of waste disposal sites.
two protective measures
respiratory protection : Most do not need special protection, high concentrations of contact-type filter can wear a gas mask (half-mask).
eye protection : general need special protection.
physical protection : antistatic wear uniforms.
hand protection : Wear protective gloves general operations.
other : no smoking scene work.
three, and emergency measures
contact with the skin : stripped of contaminated clothing, mobile water rinse.
eye contact : Did eyelid, mobile or saline irrigation water. Medical treatment.
Inhalation : rapidly from the scene to fresh air. Medical treatment. Fresh into
: warm water to drink enough, the symptoms and to seek medical treatment.
fire fighting methods : as far as possible to move containers from the scene empty Department. Water cooling containers to keep the fire until the end of fire. Extinguishing agents : anti-insoluble foam, powder, CO2, sand.
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