Sodium Tripolyphosphate (STPP)
CAS No.: 7758-29-4, EINECS No.: 231-838-7
HS Code: 28353190 (Tech grade), 28353110 (Food grade)
Molecular Formula: Na5P3O4
Molecular Weight: 367.86
Technical grade
Standard: GB9983-2004 Date of Produce: Oct 10, 2017
Batch No.: 20171010 Date of Expiry: Oct 10, 2019
|
Item |
Specification |
Test Result |
|
Content (%) |
94 Min. |
94.3 |
|
P2O5 (%) |
57 Min. |
57.1 |
|
Iron (%) |
0.015 Max. |
0.005 |
|
Water insoluble matter (%) |
0.1 Max. |
0.03 |
|
pH value (1% sol) |
9.2-10 |
9.5 |
|
Whitness (%) |
90 Min |
92 |
|
Conclusion |
PASS |
|
Standard: GB9983-2004 Date of Produce: Sep 10, 2017
Batch No.: 20170800302 Date of Expiry: Sep 10, 2019
|
Item |
Specification |
Test Result |
|
Content (%) |
94 Min. |
94.6 |
|
P2O5 (%) |
57 Min. |
59.6 |
|
Water insoluble matter (%) |
0.1 Max. |
0.01 |
|
Density (g/cbm) |
0.8-1.0 |
0.83 |
|
pH value (1% sol) |
9.2-10.0 |
9.7 |
|
Whiteness (%) |
90 Min |
90 |
|
Conclusion |
PASS |
|
Food grade
Standard: GB9983-2004 Date of Produce: Oct 9, 2017
Batch No.: 20171009 Date of Expiry: Oct 9, 2019
|
Item |
Specification |
Test Result |
|
Content (%) |
95 Min. |
95.2 |
|
P2O5 (%) |
56-58 |
57.1 |
|
Water insoluble matter (%) |
0.1 Max. |
0.01 |
|
Oxide (as F) (%) |
50 Max. |
PASS |
|
As (mg/kg) |
3 Max. |
PASS |
|
Pb (mg/kg) |
4 Max. |
PASS |
|
Heavy metal (As Pb) (mg/kg) |
10 Max. |
PASS |
|
Whiteness |
85 Min. |
PASS |
|
Conclusion |
PASS |
|
Standard packing:
STPP is normally packed in25kg pp bag, or in 50kg 1000kg bags according to customers demand. Store in tightly closed containers. Store in an area that is cool, dry, isolated from all toxic and harmful substances. This product is hygroscopic and tends to caking on storage.
Shelf life: 24 months (store in a dry warehouse with adequate ventilation, temperature 8-35 degree centigrade)
20 feet FCL capacity:
Powder: Non-palletized 25MT, Palletized 18MT;
Granule: Non-palletized 16MT, Palletized 12MT.
Transport information: General chemical.
Application:
Sodium Tripolyphosphate (STPP) tech grade is mainly used as the detergent auxiliary, and for the use of petroleum, mining, water-treating industries, metal chelating and so on.
Sodium Tripolyphosphate (STPP) tech grade increases the effect of soap, prevent the bar soap oil precipitation and frost.
Sodium Tripolyphosphate (STPP) tech grade has strong function of emulsifying to lube and fat, can adjust and buffer the pH of the soap liquid.
Sodium Tripolyphosphate (STPP) tech grade can be used as water-softening agent, dying auxiliary and dispersing agent.
Tripolyphosphate (STPP) food grade can be used as humectant metaphosphate, quality improver and pH adjuster during production of canned fruit juices, dairy products, soy milk etc.
Sodium Tripolyphosphate (STPP) food grade can make the canned ham tender and bean skin softener. It can also be used as thickener.
Toxicity Data:
Oral LD50=4100mg/kg (Rat); 3210mg/kg (Mouse)
Dermal LD50=>7940mg/kg (Rabbit)
Subcutaneous LD50=2060mg/kg (Rat)
Fire/Explosion
Material is stable under normal conditions of use. Aqueous solutions react with aluminum and liberate hydrogen. Fire may produce irritating or poisonous gases. Solutions are mildly corrosive to aluminum and galvanized steel.
Extinguishing Media
Fire-fighter should wear full protective clothing including self-contained breathing apparatus. Use dry chemical,
Carbon dioxide, water spray or foam type extinguishers. Use equipment/media appropriate to surrounding fire conditions. Use water spray to cool nearby containers and structures exposed to fire.
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