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Technical Data Typical Analysis. Product: Calamine USP Powder . CAS #: 8011-96-9. Expiry date : Up to 5 years from manufacturing date. Properties. Appearance Identification A) Identification B) Acid insoluble substance. Loss on ignition. Alkaline Substances Calcium (Ca) Calcium and magnesium. Arsenic (As) Lead (Pb) Assay.
Acid-insoluble substances— Dissolve 2.0 g in 50 mL of 3 N hydrochloric acid. If an insoluble residue remains, collect it on a tared filter, wash with water, dry at 105 for 1 hour, cool, and weigh: the weight of the residue does not exceed 40 mg (2.0%).
Identity tests. Shake 1 g with 10 mL of hydrochloric acid (~70 g/l) TS and filter. To 5 mL of the filtrate add 0.3 mL of sodium hydroxide (~80 g/l) TS; a white precipitate is formed. Add a further 2 mL of sodium hydroxide (~80 g/l) TS; the precipitate dissolves.
Appendix 1 at the end of the book contains the list of the standard methods of powder characterization and testing. Obtaining reliable powder samples is of vital importance for getting genuine data of chemical composition and the physical and technological properties of a given powder.
7 sie 2021 · 4. SOLUBILITY TEST: I. Calamine: Practically insoluble in water; soluble with effervescence in mineral acids. II. Aloe gel: Aloe vera is a desert plant that contains some 95% water that, without a proper water-tight container, would evaporate in a jiffy. The gel is where aloe vera stores its 95% water and its water-soluble nutrients (e.g. water ...
This document summarizes quality control tests performed on a sample of calamine powder. It includes the introduction, materials, procedures, results, and conclusion of the tests. Tests were conducted to analyze the solubility, identification, calcium and lead content, and alkaline substances of the sample.
This test method protocol outlines the procedures for performing solubility determinations for the in vitro validation study organized by NICEATM and the European Centre for the Validation of Alternative Methods (ECVAM) and sponsored by NIEHS, U.S. Environmental Protection Agency, and ECVAM.
