Description
Brand : CDH
Packings : 500 Gram
Grade : Analytical Reagents (AR)
PARAMETER LIMIT
- Description Colourless hygroscopic crystals/crystalline powder.
- Solubility 10% solution in water is clear and colourless.
- Clearity of alcohol soln. Passes test.
- Minimum Assay (Redox titration) 99.0%
- pH (of 5% solution in water) 2.5 – 3.5
MAXIMUM LIMIT OF IMPURITIES
– Sulphated ash 0.01%
– Alcohol insoluble matter 0.005%
– Water insoluble matter 0.003%
– Titrable free acid 0.25 meq/g.
– Ammonium (NH4) Passes test
– Sulphate (SO4) 0.002%
– Sulphur Compound (as SO4) 0.005%
– Copper (Cu) 0.0005%
– Iron (Fe) 0.0005%
– Heavy metals(as Pb) 0.0005%
