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General Chemistry
Sodium Tripolyphosphate 95%
Formula:
Na₅P₃O₁₀
GOST/CAS:
CAS 13573-18-7 / ГОСТ 13493-86
Sodium Tripolyphosphate 95% (STPP) is a highly efficient inorganic polyphosphate widely utilized as a key raw material component in the production of household detergents, industrial cleaning agents, as well as in the textile, leather, pulp and paper, and oil drilling industries. The product appears as a white, fine-grained powder or granules with excellent water solubility. Due to its outstanding capacity to sequester hardness ions (calcium and magnesium), disperse soils, and maintain an optimal pH level, STPP is an indispensable component for formulating professional and household cleaning systems, as well as for industrial water treatment.
Applications
Household and Industrial Detergent Production: Functions as a primary builder in laundry powders, dishwashing detergents, cleaning pastes, and liquid formulations. It reduces water hardness and significantly boosts the performance of surfactants (surfactant synergism).
Industrial Water Treatment and Equipment Cleaning: Used for softening process water, preventing scale buildup, corrosion, and mineral deposits in boilers, heat exchangers, and piping systems.
Textile and Leather Processing: Applied in fabric bleaching, dyeing, and leather tanning processes as a stabilizer, dispersing agent, and washing auxiliary to eliminate hardness salts.
Oil Drilling and Construction Chemicals: Serves as an effective thinning agent and deflocculant for chemical reagents in oil well drilling, and is used to regulate the viscosity of clay slurries and cement mixtures.
Key Advantages
High Chelating & Sequestering Power: STPP effectively binds calcium and magnesium ions, converting them into soluble complexes, which prevents dirt from redepositing onto cleaned surfaces (anti-redeposition agent).
Excellent Dispersing Properties: Possesses the ability to break down large soil particles (dirt, grease, clay) and keep them suspended in the solution, ensuring effortless removal.
Consistent Purity and Quality: Manufactured strictly according to high industrial standards with an active substance content of at least 95%, ensuring minimal impurities and a stable particle size distribution.
Buffer Capacity: Reliably stabilizes the pH level of washing and technical solutions within the optimal alkaline range, significantly increasing overall cleaning efficiency.
Storage & Transportation
- Store in dry, cool, and well-ventilated warehouses in tightly sealed original packaging, protected from moisture and humidity.
- Avoid direct contact with water and atmospheric precipitation, as the product is hygroscopic and prone to caking (lumping) when exposed to moisture.
- Transportation is permitted by all modes of covered transport in compliance with standard freight regulations. The product is classified as non-hazardous for transport.
- Guaranteed shelf life — 1-2 years from the date of manufacture (depending on the specific manufacturer's technical sheet).
Frequently bought together
Technical Specifications
Appearance
White fine-grained powder or granules
Molecular Weight
~367.86 g/mol
Assay (STPP Content)
≥ 95.0%
Phosphorus Pentoxide
≥ 57.0%
pH (1% Aqueous Solution)
9.5 – 10.0
Water-Insoluble Matter
max. 0.1%
Supply info
- Industrial multi-layer paper or valve-regulated polypropylene bags with a PE inner liner: 25 kg / 50 kg.
- Bulk packaging: Flexible Intermediate Bulk Containers (Big-Bags) of 1000 kg for large-scale industrial manufacturing.