Description

Pentasodium Triphosphate Hexhydrate is a high-purity, crystalline phosphate salt widely utilized as a versatile sequestering and dispersing agent. Its primary value lies in its ability to bind metal ions, control pH, and prevent scale formation in aqueous systems, which is critical for process efficiency and product stability. This compound is essential for manufacturers in the detergent, water treatment, food processing, and industrial cleaning sectors seeking reliable performance and consistent quality. The CAS number for this substance is 15091-98-2.

Application

• Detergent & Cleaning Formulations: Acts as a key builder to soften water, enhance surfactant efficiency, and prevent redeposition of soil in laundry and dishwashing detergents.
• Industrial Water Treatment: Used as a scale and corrosion inhibitor in cooling towers, boiler water systems, and reverse osmosis membranes.
• Food Processing: Employed as a sequestrant, texturizer, and moisture-retaining agent in processed meats, seafood, and poultry products.
• Ceramic & Clay Processing: Serves as an effective dispersant to reduce viscosity and improve the workability of slips and glazes.
• Oilfield Applications: Functions as a mud conditioner and scale inhibitor in drilling and production fluids.
• Industrial Cleaners: A critical component in metal cleaning, dairy cleaning, and other institutional & industrial (I&I) cleaning formulations.
• Textile Processing: Used in scouring and bleaching baths to sequester metal ions that can interfere with chemical processes and damage fabrics.
• Paints & Coatings: Acts as a pigment dispersant and stabilizer to prevent flocculation and ensure consistent color and finish.

Basic Information

Item	Details
Product Name	Pentasodium Triphosphate Hexhydrate
CAS No.	15091-98-2
Molecular Formula	Na5P3O10 · 6H2O
Molecular Weight	475.95 g/mol
Synonyms	Sodium Tripolyphosphate Hexahydrate; STPP Hexahydrate; Pentasodium Tripolyphosphate Hexahydrate; Triphosphoric Acid, Pentasodium Salt, Hexahydrate; Sodium Triphosphate Hexahydrate; INS 451(i); E451; Food Grade STPP; Graham's Salt (hydrated form); Contact for additional synonyms.
EINECS	239-172-9 (for the anhydrous form)

Quality Control

Our Pentasodium Triphosphate Hexahydrate is manufactured under a strict quality management system. Each batch is tested to ensure it meets relevant specifications for food grade (FCC), technical, or other requested standards. Key parameters such as assay, heavy metal content, and loss on drying are rigorously verified. A Certificate of Analysis (COA) is provided with every shipment to guarantee traceability and compliance.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (15-25°C). This material is hygroscopic (moisture-sensitive) and must be kept in its original, sealed packaging until use to prevent caking and degradation. Keep away from strong acids.

Specification

Item	Specification
Appearance	White crystalline powder or granules
Identification (IR)	Conforms
Assay (as Na5P3O10)	≥ 95.0%
pH (1% Solution)	9.5 - 10.5
Water Insoluble Matter	≤ 0.1%
Loss on Drying	20.0 - 23.0%
Heavy Metals (as Pb)	≤ 10 ppm
Arsenic (As)	≤ 3 ppm
Fluoride (F)	≤ 10 ppm

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.