ASTM D612 Standard Test Method for Carbonizable Substances in Paraffin Wax
3. Summary of Test Method
3.1 Five millilitres of melted wax are treated with 5 mL of concentrated, nitrogen-free sulfuric acid at 158°F (70°C). The color of the acid layer is compared with that of a colorimetric reference standard. If the color is not darker than the standard, the wax is reported as passing the test.
4. Significance and Use
4.1 This test method is a means for ascertaining whether pharmaceutical paraffin wax conforms to the standards for quality prescribed by the U.S. National Formulary.
ASTM D612 Standard Test Method for Carbonizable Substances in Paraffin Wax
by sales@dgaequipment.com | Apr 29, 2019 | Classroom
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