Webcarbonizable substances - petroleum components which can be detected in white oil, petrolatum, and paraffin wax when any of these products is mixed with concentrated sulfuric acid, causing the acid to discolor, as outlined in test method ASTM D 565 (white oil and petrolatum) or ASTM D 612 (paraffin wax). Websubstances and impurities are provided to limit such substances to amounts that are ... heavy metals (<231>Method II), readily carbonizable substances <271>, free p …
READI.01 READILY CARBONIZABLE SUBSTANCES …
In tests for readily carbonizable substances, unless otherwise directed, add the specified quantity of the substance, finely powdered if in solid form, in small portions to the comparison container, which is made of colorless glass resistant to the action of sulfuric acid and contains the specified volume of sulfuric acid TS (see under Test ... Web(9) Readily carbonizable substances—No change. (10) Residue on ignition—No change. (11) Limit of toluenesulfonamides—The test method and limits are changed to those of the European Pharmacopoeia, which in-clude a more modern test method. Editorial corrections are made. (12) Selenium—This test is deleted because it is unnecessary for ... how hard is romanian to learn
CFR - Code of Federal Regulations Title 21 - Food and Drug …
WebIn tests for readily carbonizable substances, unless otherwise directed, add the specified quantity of the substance, finely powdered if in solid form, in small portions to the comparison container, which is made of colorless glass resistant to the action of sulfuric acid and contains the specified volume of sulfuric acid TS (see under Test … Webreaction of readily carbonizable substances with sulfuric acid is non-linear. After 1 hour, promptly remove the samples from the 90 °C water bath and cool to quench the reaction. … Webfcc readily carbonizable substances of glycerin by visual inspection ep aldehydes test in glycerin by uv-vis spectroscopy ep sugars in refined glycerin by visual comparison ep sulfated ash of refined glycerin by gravimetric determination ep halogenated compounds test for refined glycerin acidity or alkalinity for finished glycerin highest rated digital tv converter box