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Zinc Oxide
CAS Number: 1314-13-2

Molecular Formula: ZnO
Molecular Weight: 81.39

Zinc Oxide Suppliers
Zinc Oxide

Zinc Oxide USP Grade Specifications
ZnO 81.39 -- CAS 1314-13-2

Zinc Oxide, freshly ignited, contains not less than 99.0 percent and not more than 100.5 percent of ZnO.

A: When strongly heated, it assumes a yellow color that disappears on cooling.
B: A solution of it in a slight excess of 3 N hydrochloric acid responds to the tests for Zinc .
Alkalinity: Mix 1.0 g with 10 mL of hot water, add 2 drops of PhPh, and filter: if a red color is produced, not more than 0.30 mL of 0.10 N hydrochloric acid is required to discharge it.
Loss on ignition: Weigh accurately about 2 g, and ignite at 500 to constant weight: it loses not more than 1.0% of its weight.
Carbonate and color of solution: Mix 2.0 g with 10 mL of water, add 30 mL of 2 N sulfuric acid, and heat on a steam bath, with constant stirring: no effervescence occurs and the resulting solution is clear and colorless.
Arsenic: 6 ppm.
Lead: Add 2 g to 20 mL of water, stir well, add 5 mL of glacial acetic acid, and warm on a steam bath until solution is effected: the addition of 5 drops of potassium chromate produces no turbidity or precipitate.
Iron and other heavy metals: Cool two separate 5-mL portions of the solution obtained in the test for Carbonate and color of solution. White precipitates are formed when potassium ferrocyanide is added to the first portion and when sodium sulfide is added to the second portion.

Zinc Oxide FCC Food Grade Specifications
ZnO Formula weight 81.38
CAS 1314-13-2

Zinc Oxide occurs as a fine, white, amorphous powder. It gradually absorbs carbon dioxide from the air. It is insoluble in water and in alcohol, and is soluble in dilute acids and in strong bases.
Function: Nutrient.

A. When strongly heated, a sample assumes a yellow color that disappears on cooling.
B. A solution of sample in a slight excess of 3 N hydrochloric acid gives positive tests for Zinc, Appendix IIIA.
Assay: Not less than 99.0% of ZnO after ignition.
Alkalinity: Passes test.
Cadmium: Not more than 3 mg/kg.
Lead: Not more than 10 mg/kg.
Loss on Ignition: Not more than 1.0%.
Substances Not Precipitated by Sulfide: Not more than 0.5%.

Zinc Oxide Analytical Reagent Grade Specifications
Formula Weight 81.39
CAS Number 1314-13-2

Assay: minimum 99.0% ZnO

Insoluble in dilute sulfuric acid: 0.01%
Alkalinity: Passes test
Chloride (Cl): 0.001%
Nitrate (NO3): 0.003%
Sulfur compounds (as SO4): 0.01%
Calcium (Ca): 0.005%
Iron (Fe): 0.001%
Lead (Pb): 0.005%
Magnesium (Mg): 0.005%
Manganese (Mn): 5 ppm
Potassium (K): 0.01%
Sodium (Na): 0.05%.

We also supply Zinc Oxide of BP Ph Eur grade. Please visit Micro Encapsulated Zinc Oxide Suppliers.

Please visit SDS Safety Data Sheet of Zinc Oxide Suppliers.

American Molecules, also known as is a distributor, supplier and manufacturers' representative of all types of Pharmaceuticals, Functional Ingredients, Excipients and Specialty Chemicals in Texas USA. Our principals manufacture supply and export USP NF BP, Ph Eur, etc grades of chemicals pure and reagent grade, mineral fortifiers, FCC food grade. Tailor made particle size and customized specifications are offered. The principal's facility is having one or more of the certifications like FDA approval and GLP, cGMP, ISO9001, ISO14001, ISO/IEC 17025, ISO22000, FSSC 22000, ISO45001, FSSAI, Kosher, HALAL, COPP, WHO-GMP certified and Written Confirmation (WC) for export to Europe is available. The manufacturers suppliers and exporters observe WHO Good Manufacturing Practices and Good Laboratory Practices.

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Suppliers and Manufacturers' Representative:
American Molecules - USA
9910 Bent Oak Dr
Houston, TX 77040, USA
Call Toll Free: 1-855-55-AMMOL 1-855-552-6665