Product Name：Phosphorus trichloride
Phosphorus trichloride can form hydrochloric acid mist in air. Has the stimulation corrosion effect to the skin, the mucous membrane. Short-term inhalation of a large number of steam can cause upper respiratory tract irritation symptoms, pharyngitis, bronchitis, serious cases can occur laryngeal edema caused by suffocation, pneumonia or pulmonary edema. Skin and eye contact may cause irritation or burns. Severe eye burns can cause blindness. Chronic effects: prolonged exposure to low concentrations may cause eye and respiratory irritation. Can cause phosphorus toxicity oral disease.
Chemical formula: PCL3
Molecular weight: 137.33
Water solubility: reacts with water
Appearance: colorless clear smoking liquid
Melting point: -93.6℃ (179.6k)
Boiling point: 76.1℃(349.3k)
Application: used in pesticide, medicine and dye industry; As catalyst, solvent of phosphorus, oxidant.
Physical and chemical properties
Exposed to moist air, it can be hydrolyzed into phosphorous acid and hydrogen chloride, and the chemical equation is PCI3+2H2O=HPO2+3HCI, which further generates complex acid H3PCI6, which is deteriorated by white smoke. Storage must be sealed. In the case of ethanol and water hydrolytic reaction, oxygen can produce oxygen oxidation of phosphorus. Phosphorus trioxide is a colorless, clear, smoky liquid with a relative density of 1.574g/cm^3 (21C), melting point of -112c, boiling point of 75.5c, vapor pressure of 13.33kPa(21C), soluble in ether, benzene, chloroform, carbon disulfide and carbon tetrachloride. Exposed to the air can hydrolyze into phosphorous acid and hydrogen chloride, white smoke and deterioration. React with oxygen to form phosphorus oxychloride, react with chlorine to form phosphorus pentachloride, and contact with organic matter will catch fire. Flammable. Easy to stimulate mucous membrane, corrosive, toxic.
The catalyst. A solvent for phosphorus. Chlorinating agent.
Toxicity and protection
Invasion route: inhalation, ingestion, skin absorption
Health hazards: phosphorus oxide gas toxic, irritating and corrosive. A violent reaction with water can cause an explosion. Inhalation of phosphorus oxide gas can cause conjunctival inflammation, sore throat and eye tissue destruction, lung and mucous membrane
Both are stimulating. It is corrosive and burns easily in contact with skin. Environmental hazards: it is harmful to the environment and may cause pollution to the water body.
Combustion hazard: combustible, combustion produces toxic nitrogen oxides and chloride fumes; In contact with water or acid, it heats up and even explodes.
Packaging storage and transportation
Packing method: closed thick steel drum, made of 2~ 3 mm thick steel plate welded, drum body covered with two rolling hoop. Screw hole, cover, gasket and other sealing parts complete, the net weight of each barrel is not more than 300 kg; Glass or plastic drums (cans) outside full open steel drums; Ordinary wooden case or half-checked wooden case outside glass or plastic bucket (can); Frosted mouth glass bottle or thread mouth glass bottle outside the ordinary wooden box; An ordinary wooden case outside the ampoule.
Notes for transport: during railway transport, the dangerous goods shall be packed in strict accordance with the dangerous goods packing table in the rules for the transport of dangerous goods of ministry of railways. The packing should be complete and the loading should be safe. In the process of transportation, the container shall not leak, collapse, fall or damage. Do not mix with oxidants, acids, alkali, edible chemicals, etc. The transport vehicle shall be equipped with leakage emergency treatment equipment during transportation. Transportation should be anti - sun, rain, anti - high temperature. Road transport should follow the prescribed route, do not stay in residential areas and densely populated areas.
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