Name: Sodium Tripolyphosphate

(Synonyms: Pentasodium triphosphate; Sodium triphosphate; STPP)

Chemical formula: Na5P3O10

Molecular Structure

Molecular weight: 367.86

Standard executed: GB/T9983-2004(industrial grade)/QB1034-91(food grade)

Properties:

Applications: Used for the main accessory ingredient of synthetic detergent, synergist of soap, water softener in industry and so on.

Package and storage: Outer woven bags with inner plastic lining, paper bag, net weight per bag is 25kg, 50kg and 100kg. Keep in dry and windy conditions.

Technical Specifications:

No.  standard name  industrial grade  food grade

1  Main content (as Na5P3O10)%¡Ý  94.0  94.0

2  Phosphorus pentoxide %¡Ý  57.0  57.0

3  Water insoluble %¡Ü  0.15  0.05

4  Fe %¡Ü  0.01  0.01

5  PH value of 1% solution  9.2-10.0  9.5-10.0

6  Heavy metal (as Pb) %¡Ü    0.001

7  Arsenic (as As) %¡Ü    0.0003

8  Fluoride (as F) %¡Ü    0.003

9  Granularity

General powder

16sieving%¡Ý 95.0 95.0

35sieving%¡Ý 90.0 90.0

100sieving%¡Ý 40.0 40.0

Fineness

100sieving%¡Ý  90.0 90.0



10  Degree of whiteness %¡Ý 90.0  90.0