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. Physico-chemical 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.Application
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 Standard
(H
G
/T 2517-2009)
Item
|
Industrial Grade
|
Superior grade
|
First grade
|
Second grade
|
Na3PO4·12H2O, %≥
|
98.5
|
98.0
|
95.0
|
Alkalinity of methyl orange (in
Na2O), %
|
16.5-19.0
|
16.0-19.0
|
15.5-19.0
|
Water insoluble,
%≤
|
0.05
|
0.10
|
0.30
|
Sulphate(in SO4
), %≤
|
0.05
|
0.50
|
0.80
|
Chloride ( in 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
|
0.005
|
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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