Tetrakis(hydroxymethyl)phosphonium sulfate, or THPS, is a biocide used as a slimicide in papermaking. It also acts as a preservative in leather tanning and a microbicide in oilfield water-injection systems. Other recorded applications include crease-resistant and flame-retardant textile finishes. Commercial aqueous solutions are clear, colourless to pale-yellow liquids. The catalogue lists a technical grade in 200 kg steel drums, 1000 kg IBCs and ISO tanks. Use in biocidal products depends on the applicable product authorisation.
Full specification
- Molecular formula
- C8H24O12P2S
- Grades
- technical
- Packaging
- 200 kg steel drum · 1000 kg IBC · ISO tank
- Appearance
- Clear colourless to pale-yellow liquid
- Synonyms
- THPS · Aqucar THPS · 55566-30-8
Compliance & regulatory
Region: EU — Chemotto S.r.l., Milano
- REACH-aligned supply
- CLP-labelled
- BPR 528/2012
REACH REACHRegistration, Evaluation, Authorisation and Restriction of Chemicals — the EU chemicals regulation (EC 1907/2006). CLP CLPClassification, Labelling and Packaging — the EU regulation (EC 1272/2008) for hazard communication. SVHC SVHCSubstance of Very High Concern — flagged on the REACH Candidate List for possible authorisation or restriction.
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