Foodoric and associated companies are chemicals manufacturing companies operated in India USA UAE Europe and other countries around the world. The associates have one or more of certifications like ISO-9001:2008, ISO-14001, ISO-22000:2005, FSSC 22000; OHSAS 18001; Kosher and Halal Certified; HACCP, FSSAI and FDA - GMP approval. Buyers are assured of good quality and CIF wholesale and retail price for supplies of our Zinc Oxide.
Zinc Oxide Pure, BP and FCC Food Grade Manufacturers Suppliers
Pure, BP and FCC Food Grade
Zinc Oxide: CAS Number: 1314-13-2, Molecular Formula: ZnO, Molecular Weight: 81.39
Zinc Oxide FCC Food Grade
ZnO Formula wt 81.38
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.
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 BP Grade
ZnO -- 81.4 -- 1341-13-2
Content: 99.0 per cent to 100.5 per cent (ignited substance).
Appearance: Soft, white or faintly yellowish-white, amorphous powder, free from gritty particles.
Solubility: Practically insoluble in water and in ethanol (96 per cent). It dissolves in dilute mineral acids.
A. It becomes yellow when strongly heated; the yellow colour disappears on cooling.
B. Dissolve 0.1 g in 1.5 ml of dilute hydrochloric acid and dilute to 5 ml with water. The solution gives the reaction of zinc.
Alkalinity: Shake 1.0 g with 10 ml of boiling water. Add 0.1 ml of phenolphthalein solution and filter. If the filtrate is red, not more than 0.3 ml of 0.1 M hydrochloric acid is required to change the colour of the indicator.
Carbonates and substances insoluble in acids: Dissolve 1.0 g in 15 ml of dilute hydrochloric acid. It dissolves without effervescence and the solution is not more opalescent than reference suspension and is colourless.
Arsenic: Maximum 5 ppm, determined on 0.2 g.
Cadmium: Maximum 10.0 ppm.
Iron: Maximum 200 ppm.
Lead: Maximum 50.0 ppm.
Loss on ignition: Maximum 1.0 per cent, determined on 1.00 g by ignition to constant mass at 500 ± 50 °C.
Zinc Oxide Manufacturers Suppliers:
Foodoric Group of Cos
India, USA, UAE, Europe
Copyright Last 9 December, 2017
Zinc Oxide Suppliers, Exporters, Importers, Manufacturers offering good CIF wholesale and retail prices, quality and online information.
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