Molecular Formula: H
3PO
4
Molecular weight: 97.99
Properties:
it is in Colorless, transparent and syrupy liquid or rhombic
crystalline; It is odorless and tastes very sour; its melting
point is 42.35
and when heated
to 300
it will become
into meta phosphoric acid; its relative density is 1.834;
it is 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; it has got hydroscopicity.
Use:
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; As a acidity regulator and nutrition agent for
yeast food grade phosphoric acid may be applied to flavors,
canned food and light drinks as well as used in wine brewery
as a nutrients source for yeast to prevent the reproduction
of useless bacteria.
Packing & Storage:
Packed 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.
It is classified as a hazardous product of the 2
nd
class of risk, and its hazardous chemicals code in China is
93002; It is easily frozen in winter season.
Specifications:
Index
|
Tech.
Grade |
Food
Grade |
Appearance |
Colorless,
transparent syrupy liquid or in very light color
|
Colour ≤ |
30 |
20 |
Assay (as H3PO4
)% ≥ |
85.0 |
85.0 |
Chloride(as Cl-) % ≤ |
0.0005 |
0.0005 |
Sulphats(asSO42-
)%≤ |
0.003 |
0.005 |
Iron (Fe)% ≤ |
0.002 |
|
Arsenic (As)% ≤ |
0.005 |
0.0001 |
Heavy metals(as Pb)%≤ |
0.001 |
0.001 |
Oxidable matter (asH3PO4)%
≤ |
|
0.012 |
Fluoride (as F)%≤ |
|
0.001 |