Zinc Carbonate Manufacturers Exporters

Muby Chemicals and a few more manufacturing units are in Mubychem Group, the pioneer manufacturer of Zinc Carbonate in India since 1976. Currently we have manufacturing facilities spread across Western India. No other vendor in the world knows Zinc Carbonate any better than we do. We are exporters to all the countries across the globe.
(FDA) GMP Approved units in the group and ISO-9001 Certificate, "REACH" Registered, ISO-22000, Kosher Certified' Halal Certified, HACCP

Zinc Carbonate Manufacturers, Supplier Exporters

CAS Number: 5263-02-5 for Basic Zinc carbonate 3Zn(OH)2.2ZnCO3; CAS#: 3486-35-9 for ZnCO3, Chemical Formula: [ZnCO3]2-[Zn(OH)2]3, EINECS EC Number: 226-076-7 for Basic Zinc carbonate and 222-477-6 for ZnCO3, Molecular weight --, HS Code 28369990

Specifications of Commercial Grade Zinc Carbonate:
Zinc Content: 55% minimum.
Iron: 0.02% maximum.
Heavy Metals: 0.02% maximum.

Zinc Carbonate USP Grade Specifications:
3Zn(OH)2-2ZnCO3 --- 548.96
Basic zinc carbonate;
Zinc subcarbonate CAS 5263-02-5

DEFINITION
Zinc Carbonate contains the equivalent of NLT 70.0% of zinc oxide (ZnO).

This 70% ZnO is equivalent to 56.1% Zinc content. We can also offer Zinc Carbonate of minimum 60% Zinc content.

ASSAY
Procedure
Analysis: Transfer 2.0 g to a 125-mL conical flask, add 50.0 mL of 1 N sulfuric acid and swirl to dissolve. Add 3 drops of methyl orange and titrate with 1 N sodium hydroxide to a yellow endpoint. Each mL of 1 N sulfuric acid is equivalent to 40.69 mg of zinc oxide (ZnO).
Acceptance criteria: NLT 70.0%

Chloride and Sulfate
Chloride:
Sample solution: Dissolve 1.0 g in a mixture of 20 mL of water and 3 mL of nitric acid.
Acceptance criteria: The Sample solution shows no more chloride than corresponds to 0.03 mL of 0.02 N hydrochloric acid (0.002%).
Sulfate:
Sample solution: Dissolve 10.0 g in a mixture of 75 mL of water and 10 mL of hydrochloric acid, and filter. Neutralize the filtrate with ammonium hydroxide and dilute with water to 100 mL.
Analysis: To 10.0 mL of the Sample solution add 1 mL of 0.6 N hydrochloric acid and 1 mL of barium chloride and allow to stand for 10 min.
Acceptance criteria: The Sample solution shows no more turbidity 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 Sample solution (0.01%).
Iron: NMT 0.002%
Lead: NMT 5 ppm
Insoluble Matter:
Sample solution: Dissolve 10 g in a mixture of 100 mL of water and 7 mL of sulfuric acid.
Analysis: Heat the Sample solution on a steam bath for 1 h. Filter the solution through a tared sintered-glass crucible, wash with hot water, and dry the crucible at 105°. Cool, and weigh.
Acceptance criteria: The residue weighs NMT 2 mg (0.02%).
Substances Not Precipitated by Ammonium Sulfide:
Sample solution: Dissolve 1.0 g 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 30 min. Dilute with water to 100 mL, and allow the precipitate to settle. Decant the supernatant through a filter. Use the clear filtrate.
Analysis: Transfer 50 mL of the Sample solution to a tared dish and evaporate to dryness. Ignite, gently at first, and finally at 800±25C. Cool, and weigh.
Acceptance criteria: The weight of the residue is NMT 2 mg (0.4%).
Packaging and Storage: Preserve in tight containers.

Zinc Carbonate Manufacturers at:

MUBY CHEMICALS
MUMBAI 400009, INDIA
TEL: (OFFICE) +91-22-23770100, +91-22-23726950, +91-22-23774610, +91-22-23723564. FAX: +91-22-23728264

Exporters to USA Canada UAE Europe South Africa Tanzania Kenya Uganda Egypt Nigeria Turkey Brazil Chile Argentina Dubai Cameroon Guatemala Mexico Kuwait ---