Zinc Stearate Pure & BP Ph Eur USP NF Grade Exporters, CAS 557-05-1 |
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MSDS of Zinc Stearate BP Ph Eur USP NF Manufacturers
Zinc Stearate
Pure
Also IP BP Ph Eur USP Reagent FCC Food Grade
Specifications of Zinc Stearate BP Ph Eur
(C17H35CO2)2Zn -- 632 -- CAS 557-05-1
DEFINITION
Zinc stearate [(C17H35COO)2Zn; Mr 632] may contain varying proportions of zinc palmitate [(C15H31COO)2Zn; Mr 576.2] and zinc oleate [(C17H33COO)2Zn; Mr 628].
Content
10.0 per cent to 12.0 per cent of Zn.
CHARACTERS
Appearance
Light, white or almost white, amorphous powder, free from gritty particles.
Solubility
Practically insoluble in water and in anhydrous ethanol.
IDENTIFICATION
A. Freezing point (2.2.18): minimum 53C, determined on the residue obtained in the preparation of solution S (see Tests).
B. Neutralize 5 ml of solution S to red litmus paper R with strong sodium hydroxide solution. The solution gives the reaction of zinc.
TESTS
Meets all the tests for Specifications of Zinc Stearate BP Ph Eur mongograph.
Zinc Stearate USP NF
Zinc Stearate USP NF
Octadecanoic acid, zinc salt.
Zinc stearate CAS 557-05-1
Zinc Stearate is a compound of zinc with a mixture of solid organic acids obtained from fats, and consists chiefly of variable proportions of zinc stearate and zinc palmitate. It contains the equivalent of not less than 12.5 percent and not more than 14.0 percent of ZnO.
Identification
A: Mix 25 g Zinc Stearate with 200 mL of hot water, add 60 mL of 2 N sulfuric acid, and boil until the fatty acids separate as a transparent layer. Cool the mixture, and remove the solidified layer of fatty acids: a portion of the water layer responds to the tests for Zinc.
B: Place the separated fatty acids obtained in Identification test A in a filter wetted with water, and wash with boiling water until free from sulfate. Collect the fatty acids in a small beaker, allow to cool, pour off the separated water, then melt the acids, filter into a dry beaker while hot, and dry at 105 for 20 minutes: the fatty acids congeal at a temperature not below 54.
TESTS
Meets all the tests for Specifications of Zinc Stearate USP NF mongograph.
Zinc Stearate BP Ph Eur USP NF Manufacturers at:
Muby Group
Chemicals Suppliers, API and Excipient Suppliers, Toll manufacturing & Warehouse at Houston & Midland, Texas, USA and India
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