Product Name

Sodium Tripolyphosphate (STPP) Tech Grade

H.S.Code

28353190

CAS No.

7758-29-4

Molecular Formula

Na 5 P 3 O 10

Molecular wt

367.86

Production standard

GB/T9983-88

Index

Request

Na 5 P 3 O 10 content (purity) %  

≥ 94.00

P 2 O 5 content %

≥ 56

Fe Content   

≤ 70 ppm

Water Insoluble %

≤ 0.10

Bulk Density    g/ml

0.6 ~0.9

Phase I content   %

5~40

Whiteness %

85 min

pH value (1% water solution)

9.2 ~10.0

Loss on drying (500C ) %

\

Residue on    %

18 mesh

\

20 mesh

\

40 mesh

\

100 mesh

\

Hydration speed (R.O.H)  

1 min.

\

5 min.

\

Volatile matter (105 C)   %

\

Appearance

white powder

Packing

25/1000/1100kg bags, PP bag with PE liner, 20~25mt/20fcl