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ITEM |
STANDARD |
CHARACTERISTIC |
TRANSPARENT CRYSTALS OR AS WHITE
GRANULAR POWDER |
IDENTIFICATION |
PASS TEST |
APPEARANCE OF SOLUTION |
PASS TEST |
ALKALINITY |
PASS TEST |
ASSAY |
99.0-100.5% |
LOSS ON DRYING (WATER) |
3.0%-6.0% |
SODIUM |
<0.3% |
READILY CARBONISABLE SUBSTANCES | PASS TEST |
TARTRATE |
PASS TEST |
HEAVY METAILS |
NOT MORE THAN 5 PPM |
CHLORIDES |
NOT MORE THAN 50 PPM |
SULPHATE |
NOT MORE THAN 150 PPM |
OXALATE |
NOT MORE THAN 100 PPM |
ARSENIC |
NOT MORE THAN 1 PPM |
LEAD |
NOT MORE THAN 0.5 PPM |
MERCURY |
NOT MORE THAN 1 PPM |