THPS 75% (CAS 55566-30-8, Tetrakis(hydroxymethyl)phosphonium Sulfate) is an eco-friendly broad-spectrum biocide liquid. It effectively controls SRB bacteria and algae, features low toxicity and easy biodegradation. Widely used for oilfield microbial control, industrial water treatment, textile flame retardant and paper mill biocontrol. TNJ Chemical is the leading manufacturer and exporter since from 2001. We guarantee high quality, competitive price, stable supply, fast delivery and tech support etc. To find more, please contact sales@tnjchem.com
Product Information
Chemical Name: Tetrakis(hydroxymethyl)phosphonium Sulfate
Synonyms: THPS
CAS No.: 55566-30-8
EINECS: 259-709-0
Molecular Formula: C₈H₂₄O₁₂P₂S
Molecular Weight: 406.28
Grade: Oilfield grade, water treatment grade
Standard concentration: 75% aqueous solution
Chemphysical Properties
Appearance: Colourless to pale yellow transparent liquid
Odour: Mild characteristic odour
Density (25℃): 1.35–1.42 g/cm³
pH: 2.5–5.0
Viscosity (25℃): 30–40 mPa·s
Solubility: Fully miscible with water
Feature: Low freezing point, low foam, rapidly biodegradable, effective against sulfate reducing bacteria
Quality Specification
| Item | Specification |
|---|---|
| Active content | ≥75.0% |
| Density (25℃) | 1.35–1.42 g/cm³ |
| pH | 2.5–5.0 |
| Viscosity (25℃) | 30–40 mPa·s |
| Iron (Fe) | ≤20 ppm |
Use & Application
Oilfield biocide for drilling fluid, fracturing fluid and produced water, inhibit SRB
Industrial circulating cooling water biocide and algaecide
Permanent flame retardant for cotton and polyester-cotton textiles
Biocide for papermaking, leather and aquaculture water system
Packing
250kg HDPE drum, 1000L IBC tank.
Delivery & Storage
Storage: Keep tightly sealed, cool ventilated warehouse, avoid strong alkali and oxidants.
Transport: Non-dangerous goods, prevent leakage.
Shelf life: 12 months under proper storage.
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