Sodium Tripolyphosphate (STPP) Specification Sheet

1. General Information:

Product Name: Sodium Tripolyphosphate (STPP)

Chemical Formula: Na5P3O10

CAS Number: 7758-29-4

2. Common Applications:

Food Grade STPP:

Food Additive: Used as a sequestrant, emulsifier, and texturizer in various food products.

Meat Processing: Improves water retention and enhances the texture of processed meats.

Seafood: Preserves the natural color and texture of seafood products.

Technical Grade STPP:

Detergents: An essential component in detergents and cleaning agents for water softening and soil dispersion.

Industrial Cleaning: Used in metal treatment, boiler water treatment, and industrial cleaning formulations.

Ceramics: Acts as a deflocculant in ceramics production.

3. Specifications for Food Grade STPP:

Appearance:

White, free-flowing granular powder.

Purity: Minimum 94.0% STPP content.

pH (1% Solution): 9.2 - 10.0.

Insoluble Matter: Maximum 0.1%.

Arsenic (As): Maximum 3 mg/kg.

Fluoride (F): Maximum 50 mg/kg.

Heavy Metals (as Pb): Maximum 10 mg/kg.

Loss on Drying: Maximum 0.5%.

Particle Size: 90% passes through a 16-100 mesh sieve.

4. Specifications for Technical Grade STPP:

Appearance: White, crystalline powder.

Purity: Minimum 94.0% STPP content.

pH (1% Solution): 9.2 - 10.0.

Insoluble Matter: Maximum 0.1%.

Arsenic (As): Maximum 3 mg/kg.

Fluoride (F): Maximum 50 mg/kg.

Heavy Metals (as Pb): Maximum 10 mg/kg.

Loss on Ignition: Maximum 1.0%.

Particle Size: 90% passes through a 16-100 mesh sieve.

5. Packaging:

Both Food Grade and Technical Grade STPP are typically available in 25 kg bags or other packaging options suitable for safe transportation and storage.

6. Storage:

Store in a cool, dry place away from incompatible materials and avoid exposure to moisture.

7. Safety Information:

Follow recommended handling and storage guidelines.

Use appropriate personal protective equipment (PPE) during handling.

Consult the Material Safety Data Sheet (MSDS) for detailed safety information.

Note: This specification sheet provides general