Tetrakis Hydroxymethyl Phosphonium Chloride Urea|CAS27104-30-9

Tetrakis Hydroxymethyl Phosphonium Chloride Urea(THPC-Urea) is an excellent flame retardant, referred to as THPC-Urea, the main role of the use of flame retardant in cotton and other fabrics with good fire retardant effect, fire rating, wash resistance, softness are up to international standards. Tetrakis Hydroxymethyl Phosphonium Chloride Urea(THPC-Urea) price quotes, methods of use, molecular structure, MSDS, CAS, boiling point and other technical information, please call for.

Product Description

English name: Tetrakis Hydroxymethyl Phosphonium Chloride Urea(THPC-Urea)

CAS Code: 27104-30-9

UN code: 2922

Molecular Formula: [(CH2OH)4P]Cl-CH2N4

Molecular weight: 423.17

Physical and Chemical Properties: Colorless transparent liquid, slightly acidic, easily biodegradable.

Main index

THPC-Urea:70%MIN

Specific Gravity Specific Gravity g/ml (at 25℃):1.30-1.40g/ml

Viscosity Viscosity cP(mPa.s) (at 20℃):20-30CP(mpa.s)

Active phosphorus:10.0%MIN

PH (at 20℃):4-5

Appearance:light yellow transparent liquid

Production process

1, add HCl and formaldehyde into reaction kettle A, open the gas-liquid cycle mixed reaction pump B, add phosphine into the gas-liquid cycle mixed reaction pump B, at 50-60 ℃ through the gas-liquid cycle mixed reaction device to absorb ph3, ph3 is not completely absorbed into the next gas-liquid cycle mixed reaction pump, through the centralized control of the detection of the content of formaldehyde to determine the end of the reaction, the reaction ends by decompression and concentration of tetrahydroxymethylphosphine chloride; the end of the reaction by decompression and concentration of tetrahydroxymethylphosphine chloride. After the end of the reaction, tetrahydroxymethylphosphonium chloride is obtained by concentration under reduced pressure;

2, tetrakis(hydroxymethyl)phosphonium chloride and urea are mixed in reaction kettle A and reacted at 80-85℃, and tetrakis(hydroxymethyl)phosphonium chloride and urea pre-condensate are obtained at the end of the reaction.

Use method

Tetrakis Hydroxymethyl Phosphonium Chloride Urea(THPC-Urea) in the fabric flame-retardant finishing process of immersion baking method: general standard flame-retardant products solvent includes: 15.8% Tetrakis Hydroxymethyl Phosphonium Chloride Urea(THPC-Urea) 9.5% melamine, 9.9% urea, and 3.0% triethanolamine, this preparation is used in the fabric post-treatment of the standard solution, after the drying, finishing, washing, and the fabric is then treated with an eight ounce solution of about 16% THPC agent. After drying, finishing and washing, the fabric is then soaked in eight ounces of THPC containing approximately 16% of the formulation. It will be permanently flame retardant, and the treated fabric will be resistant to washing, color fading, wrinkling and mildew and moth.

Storage and Transportation

Store in a cool, ventilated warehouse in a sealed container. This product is class 8 dangerous chemicals. It is suitable for sea and land transportation.

Packing

Tetrakis Hydroxymethyl Phosphonium Chloride Urea(THPC-Urea) is usually packed in 250kg polyethylene plastic drums or 1000kg IBC drums.

Tetrakis Hydroxymethyl Phosphonium Chloride Urea(THPC-Urea) is mainly used as a textile flame retardant, especially for cotton textiles, after repeated washing is still effective flame retardant, and soft feel good, in the enhancement of the degree of washing at the same time taking into account the softness of cotton fabrics, etc., the loss of tear strength is small, and does not affect the fabric's original excellent performance. Can be said to be cotton or fabric flame retardant industry, the best results, but also a very environmentally friendly flame retardant.