Zinc Carbonate Commercial Pure & USP Manufacturers |
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MSDS of Zinc Carbonate USP Manufacturers
Zinc Carbonate
Technical & Pure, Basic Zinc Carbonate
Also IP BP Ph. Eur. USP ACS AR LR FCC
Particulars ----- Specification ----- Observation
Zinc Content ---- 55% minimum ------- 57.4%
Iron ------------ 0.02% maximum ----- Complies
Heavy Metals ---- 0.02% maximum ----- Complies
Specifications of Zinc Carbonate USP
Zinc
Carbonate USP
3Zn(OH)2·2ZnCO3 549.01
Basic zinc
carbonate.
Zinc
subcarbonate [3486-35-9]
Zinc
Carbonate contains the equivalent of not less than 70.0 percent of ZnO.
Identification— A solution of it in a slight excess of hydrochloric acid
responds to the tests for Zinc.
Insoluble matter— Dissolve 10-g Zinc Carbonate in a mixture of 100 mL of water
and 7 mL of sulfuric acid, and heat on a steam bath for 1 hour. Filter the
solution through a tarred sintered-glass crucible, wash with hot water, dry the
crucible at 105 , cool, and weigh: the residue weighs not more than 20 mg
(0.02%).
Chloride— A 1.0-g Zinc Carbonate dissolved in a mixture of 20 mL of water and 3 mL
of nitric acid shows no more chloride than corresponds to 0.03 mL of 0.02 N
hydrochloric acid (0.002%).
Sulfate—
Dissolve 10.0-g Zinc Carbonate in a mixture of 75 mL of water and 10 mL of
hydrochloric acid, and filter. Neutralize the filtrate with ammonium hydroxide,
dilute with water to 100 mL, and mix. To 10.0 mL of this solution add 1 mL of
0.6 N hydrochloric acid and 1 mL of barium chloride TS, mix, and allow to stand
for 10 minutes. This test solution shows no more turbidity, if any, than that
produced in a solution containing 0.10 mL of 0.02 N sulfuric acid and the same
quantities of reagents used to prepare the test solution (0.01%).
Iron—
Dissolve 1.0-g Zinc Carbonate in 20 mL of water and 3 mL of hydrochloric acid:
the limit is 0.002%.
Lead—:
the limit is 5 ppm.
Substances not precipitated by ammonium sulfide— Dissolve 1.0-g Zinc
Carbonate in
10 mL of water and 2 mL of sulfuric acid, dilute with water to 80 mL, add 10 mL
of ammonium hydroxide, and pass hydrogen sulfide through the solution for about
30 minutes. Dilute with water to 100 mL, and allow the precipitate to settle.
Decant the supernatant through a filter, and transfer 50 mL of the clear
filtrate to a tarred dish, evaporate to dryness, ignite, gently at first and
finally at 800 ± 25 , cool, and weigh: the weight of the residue does not exceed
2 mg (0.4%).
Assay—
Transfer about 2.0 g of Zinc Carbonate, accurately weighed, to a 125-mL
conical flask, add 50.0 mL of 1 N sulfuric acid VS, and swirl to dissolve. Add 3
drops of methyl orange TS, and titrate with 1 N sodium hydroxide VS to a yellow
endpoint. Each mL of 1 N sulfuric acid consumed is equivalent to 40.69 mg of ZnO.
Zinc Carbonate Commercial Pure & USP Manufacturers
Muby Chem Ltd.
Toll manufacturing & Warehouse at Houston & Midland, Texas, USA and India
USA, Canada, Mexico Customers may e-mail: usa@mubygroup.com
Call 1-844-682-9243
Europe Africa Asia India Mumbai e-mail: info@mubygroup.com
Call +91-22-23774610
Suppliers Manufacturers Exporters Importers between USA Canada UAE Europe South Africa Tanzania Kenya
Uganda Egypt Nigeria Turkey Mexico Brazil Argentina Chile Dubai China India etc.
Copyright and Usual Disclaimer is Applicable.
Suppliers Manufacturers Exporters Importers between USA Canada UAE Europe South Africa Tanzania Kenya Uganda Egypt Nigeria Turkey Mexico Brazil Argentina Chile Dubai China India etc.
Copyright and Usual Disclaimer is Applicable.
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