2904SULPHONATED, NITRATED OR NITROSATED DERIVATIVES OF HYDROCARBONS, WHETHER OR NOT HALOGENATED
HSN heading 2904 falls under Chapter 29 — organic chemicals. It breaks down into 11 sub-codes listed below.
Sub-codes under 2904 (11)
290410
DERIVATIVES CONTAINING ONLY SULPHO GROUPS, THEIR SALTS AND ETHYL ESTERS :
290420
DERIVATIVES CONTAINING ONLY NITRO OR ONLY NITROSO GROUPS :
290431
PERFLUOROOCTANE SULPHONIC ACID
290432
AMMONIUM PERFLUOROOCTANE SULPHONATE
290433
LITHIUM PERFLUOROOCTANE SULPHONATE
290434
POTASSIUM PERFLUOROOCTANE SULPHONATE
290435
OTHER SALTS OF PERFLUOROOCTANE SULPHONIC ACID
290436
PERFLUOROOCTANE SULPHONYL FLUORIDE
290490
Other
290491
TRICHLORONITROMETHANE (CHLOROPICRIN)
290499
OTHER:
About HSN heading 2904
The 4-digit code 2904 is an HSN heading — a mid-level grouping that breaks down further into 6-digit sub-headings and 8-digit tariff items. Choose the most specific sub-code that matches your supply so the GST rate, e-invoice schema, and GSTR-1 HSN summary all line up correctly. It sits inside Chapter 29, which covers organic chemicals.