Sodium Tripolyphosphate (STPP Light) (Na₅P₃O₁₀, CAS 7758-29-4) is a white, free-flowing granular or powdered phosphate compound with excellent water solubility and strong sequestration properties. It is widely used as a builder in detergents, helping enhance cleaning efficiency by softening water and dispersing dirt particles. STPP is also used in food processing to improve moisture retention and texture, and in ceramic manufacturing as a dispersing agent. Valued for its versatility, stability, and cost-effectiveness, it delivers reliable performance across cleaning, food, and industrial applications.
| Property | Specification |
|---|---|
| Product Name | Sodium Tripolyphosphate (STPP -light) |
| CAS No | 7758-29-4 |
| Chemical Name/Synonyms | STPP Light; Sodium Triphosphate Light; Pentasodium Triphosphate Light Density |
| Chemical Formula | Na₅P₃O₁₀ |
| Appearance (Color) | White free-flowing light powder (low bulk density) |
| Molecular Weight | 367.86 g/mol |
| HS Code | 2835.31 |
| TSCA Inventory | Active |
More identifiers
| |
| Property | Typical Classification |
|---|---|
| GHS Signal Word | Warning |
| GHS Pictograms | Exclamation mark (GHS07) |
| UN Number | Not regulated as dangerous goods |
| Flash Point | Not applicable |
Typical U.S. classification for this product: label elements under OSHA’s Hazard Communication Standard (29 CFR 1910.1200) and transport under U.S. DOT (49 CFR 172.101), compiled from manufacturers’ safety data sheets and harmonised GHS classifications, checked October 2026. Environmental hazards are shown for information; the OSHA label does not cover them. Classification can differ by supplier, grade and concentration: the supplier’s U.S.-format SDS, sent with your quote, is the governing document.
Optimizes manufacturing efficiency and streamlines complex chemical operations.
Provides superior results tailored to specific industrial requirements.
Rigorously tested to ensure high purity, consistency, and reliable outcomes.
Formulated to meet strict industrial safety and environmental standards.
Highly concentrated formulation reducing overall usage and operational costs.
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Polyphosphoric acid is a strong dehydrating catalyst used in chemical synthesis, resins, and fertilizers.
Trisodium phosphate anhydrous is an alkaline agent used for cleaning, pH control, and water treatment.
Trisodium phosphate crystalline is an alkaline cleaner used for degreasing, pH control, and water treatment.
Consistent quality and international standards.
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Flexible packaging options as per requirement.
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