Description
Tetrakis(hydroxymethyl)phosphonium sulfate (THPS) is an organophosphorus compound. It is used as a precursor in the flame retardant manufacturing process, a biocide in water systems, and a tanning agent in the leather industry. THPS is a safe aqueous solution with antimicrobial properties that is significantly less toxic, effective at lower concentrations, and more biodegradable than other traditional biocides.
General Description
Clear colorless viscous liquid.
Air & Water Reactions
Water soluble.
Reactivity Profile
Tetrakis(hydroxymethyl)phosphonium sulfate is incompatible with oxidizing materials and alkalis.
Fire Hazard
Tetrakis(hydroxymethyl)phosphonium sulfate is probably combustible.
Flammability and Explosibility
Non flammable
Advantages
Advantage of the wet white tanned leathers, using THPS offers:
a light color and pastel shades
They can reach shrink temperatures of at least 70 grad C
High softness
Good lightness
Feeling of naturalness
Pleasant to the touch
Beauty that lasts for a long time
Can be burned without the risk of hexavalent chromium formation