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Mubychem Group, established in 1976, is the pioneer manufacturer of Zinc Chloride, Ammonium Chloride, Calcium Chloride, Potassium Chloride, Sodium Acetate, Sodium Thiosulfate, Calcium Sulfate, Pharmaceutical, Fragrance & Flavor chemicals in India. Mubychem Group has several manufacturing facilities spread across Western India. |
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Calcium Sulfate USP Grade Manufacturers
Buy Calcium Sulfate; Calcium Sulphate; Door Delivery
Calcium Sulfate
Technical & Pure Calcium Sulfate Dihydrate; Gypsum.
Also IP BP Ph. Eur. USP ACS AR LR FCC Food Grades
Calcium Sulfate per US Pharmacopoeia USP
Calcium Sulfate USP
Calcium Sulfate USP
CaSO4 136.14
Sulfuric
acid, calcium salt (1:1).
Calcium sulfate (1:1)
136.14.
Dihydrate 172.17.
Calcium Sulfate is anhydrous or contains two molecules of water of hydration. It contains not less than 98.0 percent and not more than 101.0 percent of CaSO4 i.e. Calcium Sulfate or Calcium Sulphate, calculated on the dried basis.
Labeling— Label it to
indicate whether it is Calcium Sulfate anhydrous or the Calcium Sulphate dihydrate.
Identification— Dissolve about 200 mg by warming in a mixture of 4 mL
of 3 N hydrochloric acid and 16 mL of water.
This solution responds to the tests for Calcium and for
Sulfate.
Loss on
drying— Dry
it at a temperature not lower than 250 to
constant weight: the anhydrous form loses not more than 1.5% of its weight,
and the dihydrate loses between 19.0% and 23.0%
of its weight.
Iron— Dissolve 100 mg
in 8 mL of 3 N hydrochloric
acid, and dilute with water to 47 mL: the
limit is 0.01%.
Heavy metals— Mix 2.0
g with 20 mL of water, add 25
mL of 3 N hydrochloric acid,
and heat to boiling to dissolve the test specimen. Cool, and add ammonium
hydroxide to a pH of 7. Filter, evaporate to a volume of about 25
mL, and re-filter, if
necessary, to obtain a clear solution:
the limit is 0.001%.
Assay— Dissolve about
300 mg accurately weighed, in 100 mL of water and 4
mL of 3 N hydrochloric acid. Boil, if necessary, to dissolve, and cool
before titrating. While stirring, preferably with a magnetic stirrer, add,
in the order named, 0.5 mL of
triethanolamine, 300 mg of hydroxy naphthol blue, and, from a 50-mL
burette, about 30 mL
of 0.05 M edetate disodium
VS. Add sodium hydroxide solution (45 in 100) until the initial red color
changes to clear blue. Continue to add it drop wise
until the color changes to violet, and add an additional 0.5
mL. The pH is between 12.3 and 12.5. Continue
the titration drop wise with 0.05 M
edetate disodium VS
to the appearance of a clear-blue endpoint that persists for not less than
60 seconds. Each mL of 0.05 M edentate
disodium is equivalent to 6.807 mg of CaSO4.
Calcium Sulfate USP grade or
Calcium Sulfate USP manufacturers:
MUBY CHEMICALS
S-8, SARIFA MANSION, 2ND FLANK ROAD,
CHINCHBUNDER, MUMBAI 400009, INDIA.
TEL: (OFFICE) 91-22-23770100, 23726950,
23774610, 23723564. FAX: 91-22-23728264.
e-mail:
info@mubychem.com
Cell Call
to Anmol: +91-9821870100
USA & Canadian Customers may Call
773-829-5811
