Tetrakis(hydroxymethyl)phosphonium chloride CAS 124-64-1

Product Name: Tetrakis(hydroxymethyl)phosphonium Chloride
English Alias: THPC; Tetrahydroxymethylphosphonium chloride
CAS Number: 124-64-1
Molecular Formula: C₄H₁₂ClO₄P
Molecular Weight: 190.56 g/mol
Appearance: Colorless to pale yellow transparent liquid
Package: 25 kg/drum, 200 kg/drum (HDPE plastic drum)

What is Tetrakis(hydroxymethyl)phosphonium Chloride?

Tetrakis(hydroxymethyl)phosphonium Chloride (THPC) is a quaternary phosphonium salt appearing as a colorless to pale yellow transparent liquid. It is fully soluble in water and polar solvents. The compound is widely used as a flame retardant for textiles and as a biocide. It exhibits high efficiency in cellulose fabric treatment and provides durable flame resistance. It should be stored in a cool, well-ventilated area away from incompatible materials.

COA (Certificate of Analysis):

ltem	Specifications	Result
assay   %	80.0-82.0	80.89
P       %	13.0-13.4	13.16

(SpecificGravity)25°C,gml)	1.320-1.350	1.321
(Fe )        %	<0.0010	0.00083
Viscosity  (25°C,cps)	<50	16.0
HAPA	100	10

Application:

Textile Industry: Flame retardant for cotton, polyester, and blended fabrics

Water Treatment: Biocide for industrial cooling water systems

Paper Manufacturing: Flame retardant for paper products

Wood Treatment: Fire retardant impregnation for wood materials

Polymer Industry: Modifier for polymer flame retardation

Chemical Synthesis: Intermediate for phosphonium compounds

Safety Profile:

Tetrakis(hydroxymethyl)phosphonium Chloride is corrosive and causes severe skin burns and eye damage. May cause respiratory irritation. Use appropriate personal protective equipment including chemical-resistant gloves, face shield, and adequate ventilation when handling. Avoid contact with skin and eyes. The substance is toxic to aquatic life. For comprehensive safety information, always consult the full Safety Data Sheet (SDS).

Storage Requirements:

Store in a cool, dry, well-ventilated area away from direct sunlight. Keep containers tightly closed and sealed. Maintain storage temperature between 5-30°C. Keep away from strong oxidizing agents and alkaline materials. Use corrosion-resistant equipment for handling.

Transport & Packaging:

Tetrakis(hydroxymethyl)phosphonium Chloride is packaged in HDPE plastic drums (25 kg or 200 kg net weight per drum). Transport as corrosive material according to applicable regulations. Ensure containers are properly sealed and protected from physical damage during transportation. Store away from incompatible materials.