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PHOSPHORUS TRICHLORIDE

CAS No. 7719-12-2
Phosphorus Trichloride

Product Features

Phosphorus Trichloride has been used in the pharmaceutical, plastic and dye industry. This basic chemical is a pesticide intermediate as well as a precursor to chemical weapons. It is used as a catalyst, solvent and reagent in organic synthesis.

Specification

Phosphorus Trichloride is a colorless to slightly yellow oily, fuming liquid with a pungent and irritating odor. It is soluble in benzene, ethyl ether, carbon disulphide and in carbon tetrachloride. It is stable, but light sensitive, incompatible with water, many metals, fluorine, acids, variety of organic materials including acids, alcohols and reducing agents. It is toxic and highly corrosive.

Properties

Molecular Formula PCl3
Molar mass 137.33 g/mol
Appearance Clear Colorless liquid
Assay 99.00% Min
Specific Gravity 1.550 - 1.580 g/cm3
Melting point −93.6 °C (−136.5 °F; 179.6 K)
Boiling point 76.1 °C (169.0 °F; 349.2 K)
Solubility in water Hydrolysis
Solubility in other solvents Soluble in benzene, CS2, ether, chloroform, halogenated organic solvents

Application

  • PHARMA

    It is used to produce sulfadiazine (SD) and sulfamethoxydiazine (SMD) in the pharmaceutical industry.

  • ENVIRONMENT

    It is used in the manufacture of surfactants and sequestrates, including phosphorus acid, used primarily for water treatment chemicals.

  • PLASTICS

    It is used as an intermediate for the manufacturing of plastics additives, including flame retardants, plasticizers, phosphite antioxidants, and stabilizers for plastic and elastomers. For example, oxidation of PCl3 gives POCl3, which is used for the manufacture of triphenyl phosphate and tricresyl phosphate, which find application as plasticisers for PVC.

  • AGROCHEMICALS

    It is a pesticide intermediate. The majority of production of phosphorus trichloride is used in the manufacture of organophosphorus pesticides including glyphosate, the active component of ROUNDUP (herbicide), dipterex (insecticide), methamidophos (insecticide), diazinon (insecticide), kitazin (fungicide).

  • DYESTUFF

    Phosphorus Trichloride is used as a condensation agent for naphthol in the dye industry.

  • OTHER USES

    Used as catalyst, solvent and reagent in organic synthesis (e.g. to convert primary and secondary alcohols into alkyl chlorides, or carboxylic acids into acyl chlorides). Used during electrodeposition of metal on rubber, for making textile finishing agents and for gasoline additives.

    Organo phosphonates, derived from phosphorus trichloride, except for agrochemical applications, are used in a variety of chelating agents, corrosion inhibitors and anti-scaling agents. Used to make tri octyl phosphine oxide (TOPO), an extraction agent.

PACKING

PCl3 is available in 200 Kg MS Drums and Specially designed Road Tankers.