Tetrakis(hydroxymethyl)phosphonium chloride

Tetrakis(hydroxymethyl)phosphonium chloride (THPC) is an organophosphorus compound with the chemical formula [P(CH2OH)4]Cl. The cation P(CH2OH)4+ is four-coordinate, as is typical for phosphonium salts. THPC has applications as a precursor to fire-retardant materials, as well as a microbiocide in commercial and industrial water systems.

Tetrakis(hydroxymethyl)­phosphonium chloride
Names
Preferred IUPAC name
Tetrakis(hydroxymethyl)phosphonium chloride
Other names
Tetrahydroxymethylphosphonium chloride, THPC
Identifiers
ChEMBL
ChemSpider
ECHA InfoCard 100.004.280
EC Number
  • 204-707-7
RTECS number
  • TA2450000
UNII
UN number 2810
Properties
(HOCH2)4PCl
Molar mass 190.56 g·mol−1
Appearance crystalline
Density 1.341 g/cm3
Melting point 150 °C (302 °F; 423 K)
Hazards
GHS labelling:
Danger
H301, H302, H311, H312, H314, H315, H330, H334, H411
P260, P261, P264, P270, P271, P273, P280, P284, P285, P301+P310, P301+P312, P301+P330+P331, P302+P352, P303+P361+P353, P304+P340, P304+P341, P305+P351+P338, P310, P312, P320, P321, P322, P330, P332+P313, P342+P311, P361, P362, P363, P391, P403+P233, P405, P501
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Infobox references
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