|
Appearance
|
Clear colorless liquid
|
|
Assay (alkalimetric)
|
24.0 to 26.0% w/w
|
|
Colour
|
Max 10 APHA
|
|
Sulphate (SO4)
|
Max 0.0001%
|
|
Dilution test
|
To pass test
|
|
Acetic anhydride [(CH3.CO)2O]
|
Max 0.01%
|
|
Chloride (Cl)
|
Max 0.0001%
|
|
Residue on evaporation
|
Max 0.001%
|
|
Titrable base
|
0.0004 meq/gm
|
|
Substance reducing KMnO4 (as O)
|
To pass test
|
|
Heavy metal
|
Max 0.00005%
|
|
Iron (Fe)
|
Max 0.00002%
|