Sodium Tripolyphosphate
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Sodium Tripolyphosphate

Chemical Name:Sodium Tripolyphosphate
CAS Number:7758-29-4
Molecular Formula:Na₅P₃O₁₀
EINECS:231-838-7
Appearance:White granular or powder
Solubility: Highly soluble in water (approximately 59g/100mL at 20°C)
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Description

Sodium Tripolyphosphate (STPP) is a highly effective multifunctional phosphate widely used as a water softener, detergent builder, and food additive. This white crystalline powder offers excellent sequestering, emulsifying, and buffering properties for various industrial and food applications.

Technical Specifications


ItemIndustrial Grade
STPP (Na5P3010) %≥94
Phosphorus pentoxide (P205) %≥

56.5

Water insoluble % ≤0.10
Iron (Fe) %≤0.007
Whiteness %≥90
PH value ( 10g/L Solution)9.2~10.0

Key Features & Benefits

• Excellent Sequestration: Strong chelating ability for metal ions
• Effective Water Softening: Removes calcium and magnesium ions
• Good Dispersing Properties: Prevents soil redeposition
• Emulsification Capacity: Enhances product stability
• Buffering Ability: Maintains optimal pH conditions

Primary Applications

Detergent Industry

• Builder in laundry and dishwashing detergents

• Soil suspending agent in cleaning compounds

• Water softener in industrial cleaners

• Synergist with surfactants

Food Industry

• Quality improver in seafood processing

• Texture modifier in meat products

• Emulsifier in processed foods

• Preservative in food applications

Industrial Applications

• Water treatment for scale inhibition

• Ceramic production auxiliary

• Textile processing aid

• Paper manufacturing additive

Other Uses

• Oil drilling mud additive

• Metal surface treatment

• Paint and coating formulations

• Mineral processing aid

Packaging & Storage

Packaging Options

• 25 kg woven bags with PE liner

• 500 kg jumbo bags

• Custom packaging available

Storage Conditions

• Store in dry, well-ventilated areas

• Keep containers tightly closed

• Protect from moisture and humidity

Avoid contact with acidic materials

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