1.
Chemical name:
calcium sulfate, calcium sulphate
2.M
olecular formula:
CaSO
4
• 2
H
2
O;
CaSO
4
3.M
olecular weight:
172.17(dihydrate); 136.14(anhydrous)
4.
CAS
:
10101-41-4
(dihydrate);
7778-18-9(anhydrous)
5.Character
:
It is
white monoclinic crystalls or crystal powder, odorless
,
slightly soluble in water, insoluble in ethanol
. The
relative density
is
2.32
. It
usually contains two crystallization water, in the form of gypsum mine exists in the nature.
6.
U
sages
:
as food additives and processing AIDS, drugs; Widely used in rubber, plastics, fertilizers, pesticides, paint, textile, food, pharmaceutical, paper making, daily chemical, arts and crafts, culture and education sector;As a group of canned tomatoes, potatoes, enhancer, brewing water curing agent, the wine flavor enhancer, etc.
7.P
acking:
lined with polyethylene plastic bags, jackets composite plastic woven bag, bag of 25 kg net each.
Test item | CaSO4 | CaSO4·2H2O |
Assay (CaSO4), dry basis ≥% | 98.0 | 98.0 |
Lead(Pb) ≤mg/kg | 2.0 | 2.0 |
As ≤mg/kg | 2.0 | 2.0 |
Fluoride(F) ≤% | 0.005 | 0.003 |
Loss On Drying ≤% | 1.5 | 19.0-23.0 |
Se ≤% | 0.003 | 0.003 |
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A:
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