Q3HSN Code 2918
Carboxylic acids with additional oxygen function and their
Carboxylic acids with additional oxygen function and their anhydrides, halides, peroxides and peroxyacids, their halogenated, sulphonated, nitrated or nitrosated derivatives
GST rate
| Gibberellic acid | 5% |
| All organic chemicals other than giberellic acid | 18% |
Codes under 2918
| Code | Description | GST rate |
|---|---|---|
| 2918 11 | Lactic acid, its salts and esters: | Varies |
| 2918 11 10 | Lactic acid | Varies |
| 2918 11 20 | Calcium lactate | Varies |
| 2918 12 | Tartaric acid | Varies |
| 2918 13 | Salts and esters of tartaric acid: | Varies |
| 2918 13 10 | Potassium bitartrate | Varies |
| 2918 13 20 | Metroprolol tartrate | Varies |
| 2918 14 | Citric acid | Varies |
| 2918 15 | Salts and esters of citric acid: | Varies |
| 2918 15 10 | Potassium citrate | Varies |
| 2918 15 20 | Sodium citrate | Varies |
| 2918 15 30 | Bismuth citrate | Varies |
| 2918 15 40 | Disodium hydrogen citrate | Varies |
| 2918 15 50 | Ferric ammonium citrate | Varies |
| 2918 16 | Gluconic acid, its salts and esters: | Varies |
| 2918 16 10 | Calcium gluconate | Varies |
| 2918 16 20 | Ferrous gluconate | Varies |
| 2918 17 | 2, 2-diphenyl-2-hydroxyacetic acid (benzilic acid) | Varies |
| 2918 18 | Chlorobenzilate (ISO) | Varies |
| 2918 19 | Carboxylic acids with additional oxygen function and their anhydrides, halides, peroxides and peroxyacids, their halogenated, sulphonated, nitrated or nitrosated derivatives › Other | Varies |
| 2918 19 00 | Carboxylic acids with additional oxygen function and their anhydrides, halides, peroxides and peroxyacids; their halogenated, sulphonated, nitrated or nitrosated derivatives - carboxylic acids with alcohol function, but without other oxygen function, their anhydrides, halides, peroxides, peroxyacids and their derivatives: other | Varies |
| 2918 19 10 | Benzeneacetic acid, alpha-hydroxy-alpha-phenyl- | Varies |
| 2918 19 20 | Cholic acid | Varies |
| 2918 19 30 | Ricinoleic acid | Varies |
| 2918 21 | Salicylic acid and its salts: | Varies |
| 2918 21 10 | Salicylic acid | Varies |
| 2918 21 20 | Sodium salicylate | Varies |
| 2918 22 | O-acetylsalicylic acid, its salts and esters | Varies |
| 2918 23 | Other esters of salicylic acid and their salts — carboxylic acids with additional oxygen function and their anhydrides, halides, peroxides and peroxyacids, their halogenated, sulphonated, nitrated or nitrosated derivatives | Varies |
| 2918 23 10 | Methyl salicylate | Varies |
| 2918 23 20 | Amino salicylate | Varies |
| 2918 23 30 | Salicylamide | Varies |
| 2918 23 40 | Benzyl salicylate | Varies |
| 2918 29 | Carboxylic acids with additional oxygen function and their anhydrides, halides, peroxides and peroxyacids, their halogenated, sulphonated, nitrated or nitrosated derivatives › Other | Varies |
| 2918 29 10 | Gallic acid | Varies |
| 2918 29 20 | Beta hydroxy napthoic acid | Varies |
| 2918 29 30 | Propyl gallate | Varies |
| 2918 30 | Carboxylic acids with aldehyde or ketone function but without other oxygen function, their anhydrides, halides, peroxides,peroxyacids and their derivatives: | Varies |
| 2918 30 10 | Levulinic acid | Varies |
| 2918 30 20 | Ethyl aceto acetate (acetoacetic ester) | Varies |
| 2918 30 30 | Nalidixic acid | Varies |
| 2918 30 40 | Methyl aceto acetate | Varies |
| 2918 30 50 | Fluoro benzoyl butyric acid | Varies |
| 2918 30 60 | Diclofop-methyl, d-trans allethrin, pyrethrin (pyrethrum) | Varies |
| 2918 30 70 | Methyl alpha-phenylacetoacetate | Varies |
| 2918 90 00 | Carboxylic acids with additional oxygen function and their anhydrides, halides, peroxides and peroxyacids; their halogenated, sulphonated, nitrated or nitrosated derivatives - other | Varies |
| 2918 91 | 2, 4, 5-t (ISO) (2, 4, 5-trichlorophenoxyacetic acid), its salts and esters | Varies |
| 2918 99 | Carboxylic acids with additional oxygen function and their anhydrides, halides, peroxides and peroxyacids, their halogenated, sulphonated, nitrated or nitrosated derivatives › Other | Varies |
| 2918 99 00 | Carboxylic acids with additional oxygen function and their anhydrides, halides, peroxides and peroxyacids; their halogenated, sulphonated, nitrated or nitrosated derivatives - other -- other | Varies |
| 2918 99 10 | Sodium phenoxy acetate | Varies |
| 2918 99 20 | Methyl (e)-2-[2-(chloro methyl) phenyl]-3-methoxyacrylate | Varies |
| 2918 99 30 | 2,4-D amine salt, 2,4-D- ethyl ester, 2,4-D sodium salt, 2,4-dichlorophenoxy acetic acid, prohexadione calcium, sbioallethrin, sodium acifluorfen. | Varies |
| 2918 99 40 | P-2-p methyl glycidic acid and its esters | Varies |
← Chapter 29: Organic chemicals and chemical compounds
Related HSN codes
Frequently Asked Questions
What is the HSN code for carboxylic acids with additional oxygen function and their?
The HSN code for carboxylic acids with additional oxygen function and their is 2918, under Chapter 29 (Organic chemicals and chemical compounds).
What is the GST rate on carboxylic acids with additional oxygen function and their?
It depends on the specific item: gibberellic acid is 5%; all organic chemicals other than giberellic acid is 18%.
How many digits of the HSN code go on a GST invoice?
It depends on your turnover in the previous financial year: businesses above ₹5 crore generally show 6 digits (8 for certain specified goods), and smaller businesses show 4 digits on B2B invoices. Check the current e-invoicing/HSN notification for the exact threshold that applies to you.
Rates as per Notification No. 9/2025-Central Tax (Rate), as amended, as of 7 October 2026. For guidance only — verify with your tax advisor.