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Assay— Digest about 1.5 g of freshly ignited Calamine, accurately weighed, with 50.0 mL of 1 N sulfuric acid VS, applying gentle heat until no further solution occurs. Filter the mixture, and wash the residue on the filter with hot water until the last washing is neutral to litmus paper.
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.
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 ...
1. The objective of the study was to formulate the Calamine lotion which do not any side-effect or adverse reaction. 2. To evaluate the prepared calamine lotion for moisturising the skin 3. Calamine lotion is used for rejuvenate the skin, remove wrinkles on skin, provide soothing effect to the skin. BENEFITS OF CALAMINE LOTION 1.
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.
01 Characteristics Pink, odorless fine powder Pink, odorless fine powder Insol. in water, completely sol. in mineral acid Insol. in water, practically completely sol. in mineral acid 02 Solubility 03 Identification A,B According to USP requirements Passes the tests 04 Acid-insoluble substances Max. 2.0 % 0.7 %
Bromine⠀test: To 5⠀ml of aloe⠀solution⠀add an⠀equal⠀volume of⠀bromine⠀solution;⠀a bulky⠀yellow⠀precipitate⠀is formed⠀due to the⠀presence⠀of⠀tetrabromoalin. SOLUBILITY⠀TEST:- 1.Calamine:⠀Practically⠀insoluble⠀in water;⠀soluble⠀with⠀pearling⠀in mineral⠀acids. II.
