Other organo-inorganic compounds. Chapter 29: Organic chemicals.
The rate depends on what the goods are: the notification gives a different rate to different descriptions. Match your goods to a description in the table below. In force on 7 Nov 2026.
Each row is an entry of a CBIC rate notification that names this heading, a code inside it or its whole chapter, in the notification's own words. Goods take the rate of the entry whose description fits them. GST is CGST plus SGST (or UTGST) in equal halves on a sale within a State, or IGST at the full rate on a sale between States.
| GST | Tariff entry | Description of goods, and source |
|---|---|---|
| Entries for the whole of Chapter 29 (they apply where the description fits) | ||
| 5%2.5% + 2.5% | 29 or 3808 93 | Gibberellic acid Notification 9/2025-CT(R), Schedule I, S.No. 222 |
| 18%9% + 9% | 29 | All organic chemicals other than giberellic acid Notification 9/2025-CT(R), Schedule II, S.No. 36 |
| Goods of this heading that fit none of the descriptions above | ||
| 18%9% + 9% | Any Chapter | Goods which are not specified in Schedule I, III, IV, V, VI or VIINotification 9/2025-CT(R), Schedule II, S.No. 639 (the residual entry). A few entries cover goods of any chapter by description, such as puja samagri, rakhi or biomass briquettes; see the list on the finder. |
Every 6- and 8-digit code of heading 2931 in the GSTN HSN master (84 codes), in GSTN's wording. Where a rate entry names a code more exactly than the heading, its rate is shown beside the code.
| Code | Description (GSTN master) | Entry for this code | |
|---|---|---|---|
| 2931 00 | Other organo-inorganic compounds | – | |
| 2931 00 10 | OTHER ORGANO-INORGANIC COMPOUNDS - OTHER ORGANO-INORGANIC COMPOUNDS : ORGANO-MERCURY COMPOUNDS | – | Save |
| 2931 00 41 | PHOSPHONIC ACID,METHYL - | – | Save |
| 2931 00 42 | PHOSPHONIC ACID,ETHYL | – | Save |
| 2931 00 43 | PHOSPHONIC ACID,PROPYL | – | Save |
| 2931 00 44 | PHOSPHINIC ACID,METHYL- | – | Save |
| 2931 00 51 | PHOSPONIC ACIDE,[METHYL-(5-ETHYL-2-METHYL 2-OXIDO- 1,3,2-DIOXAPHOSPHORINAN-5-YL) METHYL]ESTER | – | Save |
| 2931 00 52 | PHOSPHONIC ACIDE,[METHYL-BIS (5-ETHYL-2-METHYL 2-OXIDO- 1,3,2-DIOXAPHOSPHORINAN-5-YL) METHYL] ESTER | – | Save |
| 2931 00 53 | PHOSPHONIC ACID,METHYL,DIMETHYL ESTER | – | Save |
| 2931 00 54 | PHOSPHONIC ACID PROPYL DIMETHYL ESTER | – | Save |
| 2931 00 55 | PHOSPHONIC ACID ETHYL-DIETHYL ESTER | – | Save |
| 2931 00 56 | PHOSPHONOCHLORIDIC ACID METHYL-,METHYL ESTER | – | Save |
| 2931 00 57 | PHOSPHONOUS ACID- METHYL DIETHYL ESTER | – | Save |
| 2931 00 61 | 1 PROPANAMINIUM N,N,N TRIMETHYL 3-[1-OXO-9-OCTADECENYL AMINO] -(Z)-METHYL METHYL PHOSPHONATE | – | Save |
| 2931 00 62 | O,O-DIMETHYL METHYL PHOSPHONATE | – | Save |
| 2931 00 71 | PHOSPHONOTHIOIC DICHLORIDE,ETHYL- | – | Save |
| 2931 00 72 | PHOSPHONIC DICHLORIDE,METHYL | – | Save |
| 2931 00 73 | PHOSPHONOUS DICHLORIDE,METHYL- | – | Save |
| 2931 10 | TETRAMETHYL LEAD AND TETRAETHYL LEAD: | – | |
| 2931 10 10 | TETRAMETHYL LEAD | – | Save |
| 2931 10 20 | OTHER ORGANO-INORGANIC COMPOUNDS-TETRAMETHYL LEAD AND TETRAETHYL LEAD---TETRAETHYL LEAD | – | Save |
| 2931 10 90 | TETRAETHYL LEAD | – | Save |
| 2931 20 | Tributyltin compounds | – | |
| 2931 20 00 | TRIBUTYLTIN COMPOUNDS | – | Save |
| 2931 31 00 | Dimethyl methylphosphonate | – | Save |
| 2931 32 00 | Dimethyl propylphosphonate | – | Save |
| 2931 33 00 | Diethyl ethylphosphonate | – | Save |
| 2931 34 00 | Sodium 3-(trihydroxysilyl)propyl methylphosphonate | – | Save |
| 2931 35 00 | 2, 4, 6-Tripropyl-1, 3, 5, 2, 4, 6-trioxatriphosphinane 2, 4, 6-trioxide | – | Save |
| 2931 36 00 | (5-Ethyl-2-methyl-2-oxido-1, 3, 2-dioxaphosphinan-5-yl)methyl methylphosphonate | – | Save |
| 2931 37 00 | Bis[(5-ethyl-2-methyl-2-oxido-1, 3, 2-dioxaphosphinan-5-yl) methyl] methylphosphonate | – | Save |
| 2931 38 00 | Salt of methylphosphonic acid and (aminoiminomethyl)urea (1 1) | – | Save |
| 2931 39 00 | Other | – | Save |
| 2931 41 | DIMETHYL METHYLPHOSPHONATE | – | |
| 2931 41 00 | DIMETHYL METHYLPHOSPHONATE | – | Save |
| 2931 42 | DIMETHYL PROPYLPHOSPHONATE | – | |
| 2931 42 00 | DIMETHYL PROPYLPHOSPHONATE | – | Save |
| 2931 43 | DIETHYL ETHYLPHOSPHONATE | – | |
| 2931 43 00 | DIETHYL ETHYLPHOSPHONATE | – | Save |
| 2931 44 | METHYLPHOSPHONIC ACID | – | |
| 2931 44 00 | METHYLPHOSPHONIC ACID | – | Save |
| 2931 45 | SALT OF METHYLPHOSPHONIC ACID AND (AMINOIMINOMETHYL) UREA (1 : 1) | – | |
| 2931 45 00 | SALT OF METHYLPHOSPHONIC ACID AND (AMINOIMINOMETHYL) UREA (1 : 1) | – | Save |
| 2931 46 | 2,4,6-TRIPROPYL-1,3,5,2,4,6-TRIOXATRIPHOSPHINANE 2,4,6-TRIOXIDE | – | |
| 2931 46 00 | 2,4,6-TRIPROPYL-1,3,5,2,4,6-TRIOXATRIPHOSPHINANE 2,4,6-TRIOXIDE | – | Save |
| 2931 47 | (5-ETHYL-2-METHYL-2-OXIDO-1,3,2-DIOXAPHOSPHINAN-5-YL) METHYL METHYL METHYLPHOSPHONATE | – | |
| 2931 47 00 | (5-ETHYL-2-METHYL-2-OXIDO-1,3,2-DIOXAPHOSPHINAN-5-YL) METHYL METHYL METHYLPHOSPHONATE | – | Save |
| 2931 48 | 3,9-DIMETHYL-2,4,8,10-TETRAOXA-3,9- DIPHOSPHASPIRO [5.5] UNDECANE 3,9-DIOXIDE | – | |
| 2931 48 00 | 3,9-DIMETHYL-2,4,8,10-TETRAOXA-3,9- DIPHOSPHASPIRO [5.5] UNDECANE 3,9-DIOXIDE | – | Save |
| 2931 49 | OTHER | – | |
| 2931 49 10 | SODIUM 3-(TRIHYDROXYSILYL) PROPYL METHYLPHOSPHONATE | – | Save |
| 2931 49 20 | BIS[(5-ETHYL-2-METHYL-2-OXIDO-1,3,2-DIOXAPHOSPHINAN-5-YL)METHYL] METHYLPHOSPHONATE | – | Save |
| 2931 49 30 | Glyphosate (ISO), fosetyl-al, glufosinate ammonium, glyphosate potassium salt | – | Save |
| 2931 49 40 | Butyl methylphosphinate | – | Save |
| 2931 49 50 | Bis(1-methylpentyl) methylphosphonate | – | Save |
| 2931 49 90 | OTHER | – | Save |
| 2931 49 91 | Containing a phosphorus atom to which one methyl, ethyl, n-propyl or isopropyl group is bonded but no further carbon atoms | – | Save |
| 2931 49 99 | Other | – | Save |
| 2931 51 | METHYLPHOSPHONIC DICHLORIDE | – | |
| 2931 51 00 | METHYLPHOSPHONIC DICHLORIDE | – | Save |
| 2931 52 | PROPYLPHOSPHONIC DICHLORIDE | – | |
| 2931 52 00 | PROPYLPHOSPHONIC DICHLORIDE | – | Save |
| 2931 53 | O-(3-CHLOROPROPYL) O-[4-NITRO-3-(TRIFLUOROMETHYL) PHENYL] METHYLPHOSPHONOTHIONATE | – | |
| 2931 53 00 | O-(3-CHLOROPROPYL) O-[4-NITRO-3-(TRIFLUOROMETHYL) PHENYL] METHYLPHOSPHONOTHIONATE | – | Save |
| 2931 54 | TRICHLORFON (ISO) | – | |
| 2931 54 00 | TRICHLORFON (ISO) | – | Save |
| 2931 59 | OTHER | – | |
| 2931 59 00 | OTHER | – | Save |
| 2931 59 10 | P-Alkyl (<=C10, incl. cycloalkyl) N-(1-(dialkyl (<=C10, incl. cycloalkyl) amino))alkylidene (H or <=C10, incl. cycloalkyl) phosphonamidic fluorides and corresponding alkylated or protonated salts | – | Save |
| 2931 59 20 | Methyl- (bis(diethylamino)methylene)phosphonamidofluorid ate | – | Save |
| 2931 59 31 | Ethephon | – | Save |
| 2931 59 39 | Other | – | Save |
| 2931 59 90 | Other | – | Save |
| 2931 90 | OTHER: | – | |
| 2931 90 10 | OTHER ORGANO-INORGANIC COMPOUNDS -OTHER---ORGANO ARSENIC COMPOUNDS | – | Save |
| 2931 90 11 | METHYLARSONIC ACID AND ITS SALT | – | Save |
| 2931 90 12 | CACODYLIC ACID AND ITS SALT | – | Save |
| 2931 90 13 | P-AMINOPHENYLARSONIC ACID AND ITS SALT | – | Save |
| 2931 90 14 | AMINO-HYDROXYPHENYLARSONIC ACIDS, THEIR FORMYL AND ACETYL DERIVATIVES AND THEIR SALTS | – | Save |
| 2931 90 15 | ARSENOBENZENE AND ITS DERIVATIVES | – | Save |
| 2931 90 19 | OTHER | – | Save |
| 2931 90 20 | ORGANO-SILICON COMPOUNDS | – | Save |
| 2931 90 30 | O-IODOSOBENZOIC ACID | – | Save |
| 2931 90 90 | OTHER | – | Save |
Put the code in the HSN column of the tax invoice. Notification No. 78/2020-Central Tax sets the minimum digits by aggregate turnover in the previous financial year: 4 digits (2931) up to ₹5 crore, which may be left off invoices to unregistered buyers, and 6 digits (from the table above) above ₹5 crore. Where the table shows more than one rate, charge the rate of the entry whose description fits the goods sold.
