- Min.Order :1000 Kilogram
- Purity: 95
- Payment Terms : L/C,T/T,Other
Keywords
STPP inorganic compound food additive and industry chemical
Quick Details
- Appearance:white powder
- Application:water softening, industrial cleaners, food uses, detergent
- PackAge:25KG/ bag
- ProductionCapacity:30000|Metric Ton|Year
- Storage:keep cool and dry
- Transportation:by sea or air
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Details:
Sodium tripolyphosphate
Sodium tripolyphosphate abbreviated as STPP, is an important inorganic compound.
Chemical formula: Na?P?O??
Molecular weight: 367.86
Appearance: It is usually a white powder or granular substance. When the purity is low, it may be slightly yellow or gray, with good fluidity.
Melting point: 622℃
Solubility: It is easily soluble in water, and the aqueous solution is alkaline.
Application: The alkaline phosphates offer detergency activity in combination with the properties of sequestration, dispersion and buffering ability. STPP is used in water softening, industrial cleaners, food uses, detergent, emulsifier of oil and grease, a peptizing agent, deflocculating agent in oil well, sequester in cotton boiling.
| Property | Specification |
| Purity | 95.0% min |
| P2O5 | 57.0% min |
| Water insoluble | 0.05% max |
| Whiteness | 90.0% min |
| Fluoride as F | 0.003% max |
| Chloride as Cl | 0.03% max |
| Sulphate as SO4 | 0.4% max |
| Heavy metal as Pb | 0.001% max |
| Arsenic as As | 3 ppm max |
| pH value | 9.5 - 10.0 |
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