Description
Brand : CDH
Packings : 500 Gram
Grade : AR /ACS Reagents
PARAMETER LIMIT
- Description Colourless / white crystals or powder.
- Solubility 20% solution in water is clear & not more intensely coloured than ref.soln.(Y7)
- Identification Passes tests.
- Assay (Acidimetric,Calc.on anhydrous subs.) 99.5 – 100.5%
MAXIMUM LIMIT OF IMPURITIES
– Water (by Karl Fischer) 7.5 – 9.0%
– Max.UV Absorbance (Polycyclic aromatic Hydrocarbons)
280 – 289 nm 0.25
290 – 299 nm 0.20
300 – 359 nm 0.13
360 – 400 nm 0.03
– Insoluble matter 0.005%
– Chloride (Cl) 0.001%
– Oxalate (C2O4) 0.036%
– Phosphate (PO4) 0.001%
– Sulphate (SO4) 0.002%
– Aluminium (Al) 0.0002%
– Arsenic (As) 0.0001%
– Barium (Ba) Passes test.
– Calcium (Ca) 0.005%
– Copper (Cu) 0.0005%
– Iron (Fe) 0.0003%
– Lead (Pb) 0.0002%
– Heavy metals (as Pb) 0.001%
– Magnesium (Mg) 0.005%
– Readily carbonisableSubstances Passes test.
– Residue after ignition (as SO4) 0.02%
