Specification
(IS:539:1983 Grade –II) Colour White Crystallizing point, degree C, min. 79.4 Moisture content, percent by mass , max. 0.2 Ash, percent by mass, max. 0.02 Acid wash test Colouration not darker than No.3 standard colour described in the test. Matter insoluble in benzene ,percent by mass, max. 0.1 Non-volatile matter at 160 degree C, percent by mass, max. 0.1