HSN code directory

HSN Code 2825: Hydrazine and hydroxylamine and their inorganic salts

Hydrazine and hydroxylamine and their inorganic salts; other inorganic bases; other metal oxides, hydroxides and peroxides


All 8-digit HSN codes under this heading

HSN codeDescription
28251010Hydrazine and hydroxylamine and their inorganic salts: hydrazine anhydrous
28251020Hydrazine and hydroxylamine and their inorganic salts: hydrazine hydrate
28251030Hydrazine and hydroxylamine and their inorganic salts: hydrazine sulphate
28251040Hydrazine and hydroxylamine and their inorganic salts: hydroxylamine sulphate
28251090Hydrazine and hydroxylamine and their inorganic salts: other
28252000Lithium oxide and hydroxide
28253010Vanadium oxides and hydroxides: vanadium pentaoxide flakes
28253090Vanadium oxides and hydroxides: other
28254000Nickel oxides and hydroxides
28255000Copper oxides and hydroxides
28256010Germanium oxides and zirconium dioxide: germanium oxides
28256020Germanium oxides and zirconium dioxide: zirconium dioxide
28257010Molybdenum oxides and hydroxides: molybdenum trioxide
28257020Molybdenum oxides and hydroxides: molybdic acid
28257090Molybdenum oxides and hydroxides: other
28258000Antimony oxides
28259010Other: tin oxide
28259020Other: cadmium oxide
28259030Other: mercury oxides (mercuric oxide)
28259040Other: calcium hydroxide
28259050Other: ammonium hydroxide
28259090Other: 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.