Tetrakis (hydroxymethyl) phosphonium Sulfate Urea Precondesate (THPS-UPC)

We are a leading and experienced manufacturer of Tetrakis (hydroxymethyl) phosphonium sulfate urea precondensate (THPS-UPC) used as flame retardants in the textile industry. We can produce high-quality THPS-UPC at competitive prices with on-time delivery.

3D model of THPS-UPC

What is Tetrakis-(hydroxymethyl)-phosphonium Sulfate Precondesate (THPS-UPC)?

Tetrakis(hydroxymethyl) phosphonium sulfate urea precondensate is an important water-soluble, organophosphorus compounds used as textile auxiliaries in flame retardant finishing applications.

Our THPS-UPC is of high purity, low toxicity to the environment, and customizable.

CAS #: 63502-25-0
EINECS #: 613-239-6
Synonyms: tetrakis (hydroxymethyl) phosphonium sulfate urea; THPS-UPC; Phosphonium, tetrakis(hydroxymethyl)-, sulphate (2:1) (salt), polymer with urea; Aflammit SAP
Molecular Formula: C9H24N2P2SO11

Liquid being inserted into tubes

Tetrakis(hydroxymethyl)phosphonium Sulfate (THPS) Applications

Textile Auxiliaries

THPS-UPC is applied onto cotton fabrics, polyester/cotton blend fabrics and wool through a curing process to provide useful flame retardant protection properties on clothing, home textiles and technical/industrial textiles.

Tetrakis(hydroxymethyl)phosphonium Sulfate Urea Precondesate Grades

Product Number and Grades

SMC Global 654


SMC Global 656

THPS-UPC-Soft Hand

Assay, %

67.38 – 69.98


Phosphorous Content,%

9.5 – 9.7

9.5 – 9.7

Color, APHA

100 max.

100 max.


4.0 – 6.0

3.0 – 5.0

Packaging and Handling

SMC Global offers THPS-UPC packaged in a 1250 KG IBCs and bulk quantities.

Tetrakis(hydroxymethyl)phosphonium Sulfate Urea Safety

For regulatory details such as the classification and labeling as dangerous substances or goods, please refer to our corresponding Tetrakis(hydroxymethyl)phosphonium Sulfate Urea Safety Data Sheet.