HSN code directory

HSN Code 2836: Carbonates

Carbonates; peroxocarbonates (percarbonates); commercial ammonium carbonate containing ammonium carbamate


All 8-digit HSN codes under this heading

HSN codeDescription
28361000Commercial ammonium carbonate and other ammonium carbonates
28362010Disodium carbonate: disodium carbonate, dense
28362020Disodium carbonate: disodium carbonate, light
28362090Disodium carbonate: other
28363000Sodium hydrogencarbonate (sodium bicarbonate)
28364000Potassium carbonates
28365000Calcium carbonate
28366000Barium carbonate
28367000Lead carbonate
28369100Other: lithium carbonates
28369200Other: strontium carbonate
28369910Other: - other: percarbonates
28369920Other: - other: magnesium carbonate
28369930Other: - other: aluminium bicarbonate
28369990Other: - other: other


GST rate guide for this chapter

Most inorganic chemicals are taxed at 18%. A few items used as fertiliser inputs, such as sulphuric acid and ammonia, are taxed at 5%.


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.