HSN code directory

HSN Code 2931: Other organo-inorganic compounds

Other organo-inorganic compounds


All 8-digit HSN codes under this heading

HSN codeDescription
29310010Other organo-inorganic compounds: organo-mercury compounds
29310041Phosphonic acid,methyl -
29310042Phosphonic acid,ethyl
29310043Phosphonic acid,propyl
29310044Phosphinic acid,methyl-
29310051Phosponic acide,[methyl-(5-ethyl-2-methyl 2-oxido- 1,3,2-dioxaphosphorinan-5-yl) methyl]ester
29310052Phosphonic acide,[methyl-bis (5-ethyl-2-methyl 2-oxido- 1,3,2-dioxaphosphorinan-5- yl) methyl] ester
29310053Phosphonic acid,methyl,dimethyl ester
29310054Phosphonic acid propyl dimethyl ester
29310055Phosphonic acid ethyl-diethyl ester
29310056Phosphonochloridic acid methyl-,methyl ester
29310057Phosphonous acid- methyl diethyl ester
293100611 propanaminium n,n,n trimethyl 3-[1-oxo-9-octadecenyl amino] - (z)-methyl methyl phosphonate
29310062O,o-dimethyl methyl phosphonate
29310071Phosphonothioic dichloride,ethyl-
29310072Phosphonic dichloride,methyl
29310073Phosphonous dichloride,methyl-
29311010Tetramethyl lead and tetraethyl lead--- tetramethyl lead
29311020Tetramethyl lead and tetraethyl lead--- tetraethyl lead
29312000Tributyltin compounds
29319010Other---organo arsenic compounds
29319090Other---other


GST rate guide for this chapter

Most organic chemicals are taxed at 18%. Some items, such as certain bulk drug intermediates, can have other rates.


GST rates depend on the exact description of the goods in the rate schedules, not only on the HSN code. Some goods under the same heading are taxed at different rates, and conditions or exemptions can apply. Confirm the rate for your product before you raise invoices.


Frequently asked questions


How many digits of the HSN code must I show on a GST invoice?


Businesses with aggregate turnover of up to ₹5 crore in the previous year must show at least a 4-digit HSN code on B2B invoices. Businesses with turnover above ₹5 crore must show a 6-digit code on all invoices. The full 8-digit code is used for imports and exports.


What is the difference between an HSN heading and an 8-digit HSN code?


The first 2 digits are the chapter, 4 digits are the heading and 6 digits are the subheading under the international Harmonized System. India adds 2 more digits for a more precise tariff item, giving the 8-digit code used in customs and GST.


What happens if I use the wrong HSN code?


A wrong HSN code can lead to tax being charged at the wrong rate, mismatches in GSTR-1 and the HSN summary, and notices with interest and penalty. If you are unsure about classification, a CA can review it before you file.


Need help with classification or GST rates? GST registration and return filing or book a free consultation with our CA-led team.