Molecular formula: Na5P3O10; Molecular
weight: 367.86
CAS No.: 7758-29-4; H.S CODE: 2835.3100
Properties: white powder or granules. Apparent
density 0.35¡ª0.90 g/cm3, mp 622¡æ. Very soluble in
water, pH of 1% aq. solution is 9.5¡ª10.0. It has
two crystal forms: Na5P3O10-I
(¦Átype£¬high temperature) and Na5P3O10-II
(¦Âtype, low temperature).
Use: as emulsifier and detergency enhancer; water
softener; in tanning leather; dyeing auxiliary;
dispersant.
Test method
|
GB9983-88
|
| Type |
Standard values |
White powder |
White granular |
| Assay |
85%min |
94% min |
94%min |
| P2O5 |
57.0min |
57% min |
57%min |
| pH |
9.2¡ª10 |
9.2¡ª10 |
9.2---10 |
| Whiteness |
85%min |
90 min |
90 min |
| Water insoluble substances |
0.05%max |
0.01%max |
0.01%min |
Apparent density
|
--------------- |
0.65-0.72g/cm3 |
0.58-0.65 g/cm3 |
| Particle size (through 20 mesh) |
--------------- |
100% |
100% |
| Particle size (through 60 mesh) |
-------------- |
100% |
20% |
| Particle size (through 100 mesh) |
------------- |
80% |
10% |
Packaging: 50lb plastic woven bag or paper bag, net
weight 10Kg or 25Kg; 2,000lb plastic woven bag, net
weight 1,000Kg. |
