Sodium Phosphate
name：Sodium Phosphate
Sodium Phosphate：Na3PO4.12H2O
M.W：380.12
CAS NO.：7601-54-9
Characters：colorless needle-like hexagonal crystal.Soluble in water, insoluble in machine solvent;Relative density 1.62 (20 ℃);Melting point 73.3 76.7 ℃ degrees Celsius (decomposition);Easy weathering in dry air, and twelve water of crystallization in 100 ℃ or lose the anhydride (Na3PO4).The aqueous solution is alkaline and has a certain corrosive effect on the skin.
Usage：used in metallurgy, chemical industry, textile, printing and dyeing, papermaking, electromechanical and other industries as water softener, boiler tube cleaning and detergents;Metal anti-rust agent, dye intermediates desiccant, purification agent of sugar syrup, photographic developer, fabric mercerizing agent, rubber latex coagulant, dental cement;There are also certain applications in pharmaceutical preparations.
Specification：

Name of index

Name of index

superior product

top quality goods

qualified product

Trisodium phosphate (Na3PO4·12H2O) content. %≥

98.5

98.0

96.0

sulfate(SO4²¯) %≤

0.50

0.50

0.80

sulfate(SO4²¯) %≤

0.30

0.40

0.50

Water insoluble content.%≤

0.05

0.10

0.30

methyl orange alkalinity(Na2O)

16.5～19.0

16.0～19.0

15.5～19.0

iron(Fe) %≤

0.01



arsenic(As) %≤

0.005