Introduction
White powder STPP with 57% P2O5 in 96%/94% purity for detergent powder,ceramic industry, also widely used in food industry.
STPP（ Sodium Tripolyphosphate）
White microdot powder with luster,melting point at 622℃，easily soluble in water, with remarkable chelating ability to some metal irons such as Ca2+,Mg2+,can soften hard water,change suspension into solution, alkalescent, without causticity.
1.Introduction
Appearance:White Powder, granular
Molecular formula: Na5P3O10
Molecular weight: 367.86
CAS No.: 7758-29-4
HS No.: 2835.3919.00
Function :Chiefly used as a water softener,sequestering agent,and defloculating agent in detergent industry.
Standard Executed: GB/T9983-2004(Industrial Grade)
GB/25566-2010(Food Grade)
2.Technical Specification
|
ITEM |
INDEX |
|
|
Industrial Grade |
Food Grade |
|
|
Na5P3O10 %≧ |
90 |
85 |
|
P2O5 %≧ |
57 |
57 |
|
Water insoluble%≦ |
0.15 |
0.05 |
|
Fe %≦ |
0.007 |
N |
|
PH (1% solution) |
9.2-10 |
9.4-10 |
|
Heavy Metals (As Pb)%≦ |
N |
0.001 |
|
Arsenic (As)%≦ |
N |
0.0003 |
|
Fluoride(F) %≦ |
N |
0.003 |
|
Whiteness%≧ |
90 |
90 |
|
Pb%≦ |
N |
0.0004 |
3.Application
4.Packing
25kg pp bag, 25MT/20’FCL
5.Storage and Transportation
To be stored in a dry, ventilative and clean warehouse; Kept away from moisture, heat and poisonous substances.
