HSN Code 29041020 - 1 5 napthelene disulphonic acid armstrong s acid

HSN Code (Classification)
Description
29(Chapter)Organic chemicals
2904(Heading)Sulphonated, nitrated or nitrosated derivatives of hydrocarbons, whether or not halogenated
290410(Sub-Heading)Derivatives containing only sulpho groups, their salts and ethyl esters :
29041020(Item)
1,5 napthelene disulphonic acid (armstrong's acid)