Sodium&Nbsp; Tripolyphosphate (STPP)

Product Details
Customization: Available
CAS No.: 7758-29-4
Usage: Water Treatment Chemicals, Paper Chemicals
Gold Member Since 2014

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  • Sodium&Nbsp; Tripolyphosphate (STPP)
  • Sodium&Nbsp; Tripolyphosphate (STPP)
  • Sodium&Nbsp; Tripolyphosphate (STPP)
  • Sodium&Nbsp; Tripolyphosphate (STPP)
  • Sodium&Nbsp; Tripolyphosphate (STPP)
  • Sodium&Nbsp; Tripolyphosphate (STPP)
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Basic Info.

Model NO.
STPP
Color
White
Molecular Formula
Na5p3o10
CAS Number
7758-29-4
Molecular Weight
367.86
pH Value
9.2-10.3
Whiteness
85 Min
Transport Package
25kg/Paper Bag or 1000kg/Supersack
Specification
STPP
Trademark
Deborn
Origin
China
HS Code
2835311000

Product Description

Synonym: Pent-sodium Phosphate
Molecular formula: Na5P3O10
Molecular Weight: 367.86
CAS Number: 7758-29-4 
Technical index:
Testing Items STPP Food Grade STPP Technical Grade
Appearance White Powder or granules White Powder or granules
Content (Na5P3O10)% 95.0 min 94.0 min
P2O5 % 57.0 min 56.5 min
Fluoride (F) % 0.003 max -
Arsenic (As)% 0.0003 max -
Heavy Metal (Pb)% 0.001 max -
Chloride (Cl)% 0.025 max -
Sulfate (SO42-) % 0.4 max -
Water Insoluble % 0.05 max 0.1 max
pH Value 9.5-10 9.2-10.3
Whiteness 85 min 85 min

Application:
It can be used as moisture conservative. Applied to can, fruit drinks, milk products, vegetable protein drinks, instant noodles, meat products, and so on.
Package:
25kg/paper bag or 1000kg/supersack.
Sodium&Nbsp; Tripolyphosphate (STPP)Sodium&Nbsp; Tripolyphosphate (STPP)

STPP is a critical additive in detergents and cleaning products, where it serves multiple functions:

Chelation of Metal Ions: STPP binds calcium (Ca²+) and magnesium (Mg²+) ions in hard water, preventing them from forming insoluble salts with surfactants. This enhances detergent efficiency, reduces residue on fabrics, and maintains fabric brightness

Emulsification and Dispersion: It breaks down proteins and fats in stains, emulsifies oils, and disperses solid particles (e.g., dirt, sand), improving overall cleaning performance
pH Buffering: STPP stabilizes the pH of detergent solutions at ~9.4, optimizing the removal of acidic stains
Anti-Caking Agent: In powdered detergents, STPP prevents clumping by absorbing moisture and maintaining a dry, free-flowing texture

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