CAS 124-64-1 Tetrakis(hydroxymethyl)phosphonium Chloride (ca. 80% in Water)

Synonyms

KSC492Q8N; tetrakis(hydroxymethyl)phosphanium chloride; Pyroset TKC; SC-80017; UNII-58WB2XCF8I; Tetrakis(hydroxymethyl)phosphonium chloride, ca. 80% solution in water; MFCD00031687; EC 204-707-7; NSC30698; Phosphonium, tetrakis(hydroxymethyl)-, chloride;

IUPAC Name

tetrakis(hydroxymethyl)phosphanium;chloride;

Molecular Weight

190.56g/mol

Molecular Formula

C4H12ClO4P;

Canonical SMILES

C(O)[P+](CO)(CO)CO.[Cl-];

InChI

InChI=1S/C4H12O4P.ClH/c5-1-9(2-6,3-7)4-8;/h5-8H,1-4H2;1H/q+1;/p-1;

InChI Key

AKXUUJCMWZFYMV-UHFFFAOYSA-M;

Melting Point

154 deg C;

Density

1.322 at 64 ° F (NTP, 1992);1.341;

Solubility

greater than or equal to 100 mg/mL at 68° F (NTP, 1992);In water, 40,000 mg/l, temp not specified.;

Color Form

Crystalline;

Complexity

55.5

Corrosivity

Corrosive;

Covalently-Bonded Unit Count

Decomposition

When heated to decomposition it emits very toxic fumes of /phosphorous oxides & hydrogen chloride/.;TETRAKIS(HYDROXYMETHYL)PHOSPHONIUM CHLORIDE DEGRADES THERMALLY & UNDER CERTAIN CHEMICAL CONDITIONS TO YIELD HYDROCHLORIC ACID & FORMALDEHYDE. IN SOLN, THE LATTER 2 CMPDS ARE IN EQUILIBRIUM WITH THE KNOWN POTENT CARCINOGEN BIS(CHLOROMETHYL)ETHER. PubMed Abstract;

EC Number

204-707-7

Exact Mass

190.016g/mol

H-Bond Acceptor

H-Bond Donor

Heavy Atom Count

Monoisotopic Mass

190.016g/mol

NSC Number

30698

Rotatable Bond Count

RTECS Number

TA2450000

Topological Polar Surface Area

80.9A^2

UNII

58WB2XCF8I

UN Number

2810

Vapor Pressure

1 mm Hg at 77 ° F ; 6.0 mm Hg at 84° F; 110.0 mm Hg at 124° F (NTP, 1992);

Application

Tetrakis(hydroxymethyl)phosphonium chloride (ca. 80% in water) serves primarily as a flame-retarding agent for cotton fabrics, enhancing safety and durability when used in textiles. It can be employed in conjunction with compounds like triethylolamine and urea, as in the Roxel process, or paired with triethanolamine and tris(1-aziridinyl) phosphine oxide for enhanced effectiveness. Additionally, it functions as a reducing agent and stabilizing ligand in the synthesis of gold nanoparticles from gold(III) chloride trihydrate and acts as an amine-reactive, aqueous crosslinker. This latter feature is particularly useful in modifying protein-based hydrogels for 3D cell encapsulation applications. The product is a slightly viscous, colorless to yellow liquid, soluble in water, hygroscopic, and reactive with oxidizers, alkalis, and cellulose.

February 28, 2025

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