Product name: Trichloromethane
Packing mark: toxic
Packaging category: Ⅲ
Physical and chemical properties
Appearance and properties: colorless transparent heavy liquid, volatile , with special odor.
Melting point (℃): -63.5
Heat of combustion (kJ/mol): meaningless
Boiling point (℃): 61.3
Relative density (water=1): 1.50
Relative density (air=1): 24.12
Critical temperature (℃): 263.4
Saturated vapor pressure (kPa): 13.33(10.4℃)
Critical pressure (MPa): 5.47
Lower explosive limit〔％ (V/V)〕: meaningless
Upper explosive limit〔％ (V/V)〕: meaningless
Ignition temperature (℃): meaningless
Maximum explosion pressure (MPa): NA
Flash point (℃): meaningless
Partition coefficient of Octanol/water (kPa): 1.97
Solubility: insoluble in water, soluble in alcohol, ether, benzene.
Uses: used in organic synthesis and anesthetics.
Pathways: inhaled, ingested, absorbed through the skin
Major role in the central nervous system, has a narcotic effect on the heart, liver and kidney damage. Acute poisoning: inhalation or absorption through the skin can cause acute poisoning. Early headache, dizziness, nausea, vomiting, excitement, damp skin and mucosal irritation. After presenting mental disorders, respiratory table light, reflexes, coma, severe respiratory paralysis, ventricular fibrillation. It may be associated with liver and kidney damage. When swallowed poisoning, stomach burning sensation, nausea, vomiting, abdominal pain, diarrhea. Symptoms appear after anesthesia. Liquid can cause dermatitis, eczema, and even skin burns. Chronic effects: major cause liver damage, and indigestion, fatigue, headache, insomnia and other symptoms, a small number of kidney damage and addiction addicted to chloroform. Hazardous to the environment, can cause pollution of water bodies. This product is flammable, toxic, as suspected carcinogens, irritating.
Acute toxicity: LD50: 908mg / kg (rat oral)
LC50: 47702mg / m3, 4 hours (rat inhalation)
Hazardous characteristics: with the fire or hot objects can produce highly toxic phosgene contact. In the role of air, water and light acidity, and thus have a strong corrosive metal. Hazardous combustion products: hydrogen chloride, phosgene. Fire fighting methods: firefighters must wear a gas mask filter type (full cover) or isolated respirators, wearing fire protective body suits, the wind on fire. Fire extinguishing agent: mist of water, carbon dioxide, sand.
Stability and reactivity:
Hazardous Polymerization: No aggregation
Conditions to be avoided: Light
Incompatibility: bases, aluminum.
Closed operation, local exhaust. The operator must go through specialized training, strict adherence to rules. Proposed operators wear protective masks Direct (half-mask), wearing chemical protective safety glasses, wear protective overalls on infiltration, wearing anti-chemical gloves. Prevent vapor leakage into the workplace air. Avoid bases, aluminum contact. When handling
To gently, to prevent damage to packaging and containers. Equipped with spill response equipment. Empty containers may be harmful residues.
Store in a cool, ventilated warehouse. Away from fire, heat source. Storage temperature does not exceed 30 ℃, relative humidity less than 80%. Keep container closed. Should the bases, aluminum, food chemicals stored separately, avoid mixing reservoir. Storage areas should be equipped with spill response equipment and materials suitable host.
Railway transport should be strictly in accordance with the Ministry of Railways, "Dangerous Goods Code" in the dangerous cargo loading table equipped. Transport preceded by checking whether container integrity, sealing, transport process to ensure that the container does not leak, did not fall, do not fall, no damage. Strictly prohibited and acids, oxidant, food and food additives mixed operation. Transport transport vehicles should be equipped with spill response equipment. Transit should be anti-exposure, rain, high temperature. According to the provisions road transport routes, not in residential areas and densely populated areas.
Immediately remove contaminated clothing, rinse for at least 15 minutes with plenty of water. Eye contact: immediately filed eyelid, thoroughly washed at least 15 minutes with plenty of water or saline. Medical treatment. Inhalation: rapidly from the scene to fresh air. Keep the airway open. If breathing is difficult, give oxygen. If breathing stops, artificial respiration immediately. Medical treatment. Ingestion: drink enough water, induce vomiting. Medical treatment.
ACCIDENTAL RELEASE AND DISPOSAL:
Emergency Action: rapid withdrawal from air leakage personnel to a safe area, and isolation and strict restrictions on access. Recommended emergency personnel wearing self-Pressurized respirators to wear protective clothing. Do not direct contact with leakage. Cut off the source of leakage as possible. A small leak: sand, vermiculite or other inert materials to absorb. Large leak: to build a causeway or trenching asylum. Foam coverage, lower vapor disasters. With the transfer pump to tankers or exclusive collector, recycling or shipped to the waste disposal sites.
Waste disposal method: disposal by incineration. Mixed with the fuel, and then burned. Incinerators emit hydrogen halide removed by acid scrubber.
Maximum allowable China: 200
Engineering controls: closed operation, local exhaust ventilation
Closed production process, comprehensive respiratory system preventing possible exposure to vapor, wear self-absorption filter respirators (full cover). ventilation. Provide safety shower and eyewash equipment protection
Respiratory protection: concentration in air overweight, they should wear protective masks Direct (half-mask). Emergency rescue or evacuation, it is recommended to wear air respirators
Eye protection: when necessary, wearing chemical protective safety glasses Body
Physical protection: anti-virus penetration overalls
Hand protection: Wear gloves against chemicals
Other protection: No smoking, eating and drinking. Workers completed, take a bath. Separate storage of toxic pollution by the clothes, washed standby. Pay attention to personal hygiene.