Responsabile del prodotto
SODIUM TRIPOLYPHOSPHATE or STPP is an inorganic compound. It is the sodium salt of the polyphosphate which is the conjugate base of triphosphoric acid. Sodium tripolyphosphate is produced by heating a stoichiometric mixture of disodium phosphate, Na2HPO4 and monosodium phosphate, NaH2PO4 under carefully controlled conditions.
Chemical name
|
Pentasodium triphosphate |
Formula
|
Na₅P₃O₁₀ |
Molar mass
|
367.8 g/mol |
CAS / EINECS
|
7758-29-4 / 231-838-7 |
Code
|
2835310000 |
Photo
Specification
Product code
|
1011
|
1014
|
Appearance
|
Granular anhydrous STPP
|
White free flowing powder
|
Content of (P2O5)
|
min. 55,5 %
|
min. 54,5 %
|
Content of Na5P3O10
|
min. 94 %
|
min. 94 %
|
Phase I content
|
–
|
50 – 70 %
|
Hunter colour meter L
|
min. 90 %
|
min. 95 %
|
Bulk density
|
900 – 1300 g/l
|
1000 – 1200 g/l
|
Particle size composition
|
On sieve 1,000 mm
(1000 microns)
max. 15 %
|
On sieve 425 microns
(Tyler 35 mesh or equivalent)
max. 5,0 %
|
|
On sieve 0,250 mm
(250 microns)
min. 90 %
|
On sieve 150 microns
(Tyler 100 mesh or equivalent)
min. 75 %
|
Packing
|
- 1000 kg big bags
- 25 kg bags on pallets
pallet 100x120 cm
|
- 1000 kg big bags
- 25 kg bags on pallets
pallet 100x120 cm
|
|
|
|
All of the above
results are based on the analysis of a composite sample. Individual samples may fall outside the
specified standard.
Packing
1011 |
1014 |
|
|
Application
- detergent industry
- ceramics
- leather tanning
- flame retardant
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