Guide to Specifications for General Notices, General Analytical Techniques, Identification Tests, Test Solutions, and Other Reference Materials

Guide to Specifications for General Notices, General Analytical Techniques, Identification Tests, Test Solutions, and Other Reference Materials

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For some samples, it may be necessary to use as the solvent a 1:1 mixture of neutralized diethyl ether/ethanol or petroleum spirit/ethanol . Add 0.5 ml of phenolphthalein TS and titrate immediately, while shaking, with 0.5 N KOH until the pink colour persists for at least 30 sec. (For acidity less than ... Suspend a standard thermometer in the melted sample so that it will serve as a stirrer, cool if necessary, and stir the mass slowly until the mercury remains stationary for 30 sec. Discontinueanbsp;...


Title:Guide to Specifications for General Notices, General Analytical Techniques, Identification Tests, Test Solutions, and Other Reference Materials
Author: Food and Agriculture Organization of the United Nations
Publisher:Food & Agriculture Org. - 1991
ISBN-13:

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