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Raw Material Test Method - Zinc Oxide
Dissolve 0.150 g in 10 ml of dilute acetic acid. Then introduce it into a 500 ml conical flask and dilute to 200 ml with water. Add about 50 mg of xylenol orange triturate and hexamethylenetetramine until the solution becomes violet-pink. Add 2 g of hexamethylenetetramine in excess. Titrate with 0.1 M sodium edetate until the violet-pink colour changes to yellow.
STP
Raw Material Test Method - Ambroxol HCl
IR Spectrum of the test sample must be concordant with that of Ambroxol hydrochloride RS/Working standard. The correlation should be at least 0.950.
STP
Raw Material Test Method -Aceclofenac BP
Take about 0.1 gm of the sample in a clean and dry test tube. To it add 1 ml of acetone and mix. The solution should be clear without any suspended particles.
STP
Raw Material Test Method - Vitamin E Acetate 50 % Dry Powder
Appearance: Almost white, yellowish or light brown, crystalline powder.
Solubility: Practically insoluble or swells or forms a dispersion in water, depending on the formulation.
STP
Raw Material Test Method - Zinc Sulfate Monohydrate
Freely soluble in water:
Take about 0.1 g of test sample into a clean and dry test tube. Add 1 ml purified water and mix the content. The solution should be clear without any suspended particles.
Practically insoluble in Alcohol:
Take about 10 mg of the sample in 200 ml volumetric flask. To it add 100 ml of Alcohol and shake. The dispersion should not be clear (suspended particles will be observed).
STP