TRISODIUM PHOSPHATE
1. Basic Information
English : Trisodium Phosphate
Alias : Sodium Phosphate
Molecular formula : Na3PO4 · 12H2O
Molecular weight : 380.12
CAS No. : 10101-89-0
EINECS : 231-509-8
Customs Code : 28352910
2. Physicochemical Properties
Appearance : colorless or white crystal.
Relative density : 1.62 g/cm3
Melting point : 73.3 ~ 76.7 ºC
Solubility : Soluble in water, insoluble in ethanol and carbon disulfide.
Attribute: Colorless acicular hexagonal crystal. In dry air, twelve crystal waters are lost at 100ºC and become anhydrous substance (Na3PO4). The aqueous solution is alkaline and has a certain erosion effect on the skin.
3.Applications
Soft water agent, detergent, boiler descaling agent. Used in tanning as a degreasing agent and degumming agent. Detergent for bottle washer and sugar juice, photographic developer, fabric mercerizer, rubber milk coagulant; Also has certain application in medical pharmacy.
4.Technical Standards (HG/T 2517-2009)
| Item |
Industrial Grade
|
Superior grade
|
First grade
|
Second grade
|
Na3PO4·12H2O %≥
|
98.5 |
98.0 |
95.0 |
Alkalinity of methyl orange (as Na2O) %
|
16.5-19.0 |
16.0-19.0 |
15.5-19.0 |
Water insoluble %≤
|
0.05 |
0.10 |
0.30 |
Sulphate(as SO4-2) %≤
|
0.05 |
0.50 |
0.80 |
Chloride ( as Cl-) %≤
|
0.30 |
0.40 |
0.50 |
pH Value (10g/L Solution)
|
11.5~12.5 |
Iron(Fe) %≤
|
0.01 |
0.01 |
0.01 |
Arsenic(As) %≤
|
0.005 |
0.005 |
0.05 |
5. Product Packaging
The inner package is a double-layer bag lined with polyethylene film, and the outer package is a plastic woven bag with a net content of 25kg per bag.
6. Storage Condition
During transportation, prevent rain and sunshine. Store in a dry and ventilated warehouse, and add cushion to prevent caking.
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