Sodium Tripolyphosphate (STPP)
CAS NO.: 7758-29-4
Molecular Formula: Na₅P₃O₁₀
Molecular Weight: 367.86
Sodium tripolyphosphate is a white crystalline powder used as a cleaning agent, water softener, and preservative in food products.
Main Applications:
Used in detergents, water treatment, seafood preservation, and ceramics.
Typical Properties:
|
Property |
Value |
|
Appearance |
White crystalline powder |
|
Assay |
≥94.0% |
|
Density |
2.52 g/cm³ |
|
Solubility in Water |
14.5 g/100 mL (25°C) |
|
pH (1% solution) |
9.2–10.2 |
|
Storage |
Store in a cool, dry place |
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