Molecular Formula: H3PO4
Executed Standard: HG/T 4069-2008
Properties: It is a kind of colorless, transparent and syrupy liquid. It is odorless and tastes very sour with melting point at 42.35℃. When heated up to 300℃, it will become into meta phosphoric acid. Its relative density is 1.834 g/cm3, easily soluble in water and resolves in ethanol. It may irritate human skin to cause phlogosis and destroy the issue of human body. It shows corrosiveness being heated in ceramic vessels; with hydroscopicity.
Application: Technical grade phosphoric acid may be used to produce variety of phosphates, electrolyte treatment liquids or chemical treatment liquids, refractory mortar with phosphoric acid and inorganic coheretant. It is also used as a catalyst, drying agent and cleaner. In coating industry it is used as a rust-proof coating for metals.
Packing and Storage: In 35 kg or 330 kg net plastic drums. During transportation or storage, the inner cover as well as the outer cover of the packing drums must be well sealed. Its hazardous chemicals code in China is 93002; easily frozen in winter.
Technical Specification:
|
Item
|
Index
|
|
Excellent
|
First-class
|
Qualified
|
|
Color % ≤
|
20
|
30
|
40
|
|
Assay (as H3PO4) %≥
|
85.0
|
85.0
|
85.0
|
|
Sulphates (as SO42-) % ≤
|
0.01
|
0.02
|
0.03
|
|
Chloride (as Cl-) %≤
|
0.0005
|
0.001
|
0.002
|
|
Iron (as Fe) % ≤
|
0.002
|
0.002
|
0.005
|
|
Arsenic (as As) % ≤
|
0.0001
|
0.0005
|
0.001
|
|
Fluoride (as F) % ≤
|
0.02
|
0.03
|
0.04
|
|
Heavy metals (as Pb) %≤
|
0.001
|
0.002
|
0.003
|
|
TOC (as C) %≤
|
0.007
|
——
|
——
|
 |
