All 8-Digit Codes Under HSN 2931
Classify the goods at eight digits before you quote a rate: the duty, the export policy and the RoDTEP rate are fixed line by line.
| Tariff item | Description | Basic customs duty | Export policy | RoDTEP |
|---|---|---|---|---|
| 2931 10 10 | Tetramethyl leadTetramethyl lead and tetraethyl lead | 7.5% | Free | 0.7% |
| 2931 10 90 | Tetraethyl leadTetramethyl lead and tetraethyl lead | 7.5% | Free | 0.7% |
| 2931 20 00 | Tributyltin compounds | 7.5% | Free | 0.7% |
| 2931 41 00 | Dimethyl methylphosphonate | 7.5% | Free | 0.7% |
| 2931 42 00 | Dimethyl propylphosphonate | 7.5% | Free | 0.7% |
| 2931 43 00 | Diethyl ethylphosphonate | 7.5% | Free | 0.7% |
| 2931 44 00 | Methylphosphonic acid | 7.5% | Free | 0.7% |
| 2931 45 00 | Salt of methylphosphonic acid and (aminoiminomethyl) urea (1: 1) | 7.5% | Free | 0.7% |
| 2931 46 00 | 2,4,6-Tripropyl-1,3,5,2,4,6-trioxatriphosphinane 2,4,6 -trioxide | 7.5% | Free | 0.7% |
| 2931 47 00 | (5-Ethyl-2-methyl-2-oxido-1,3,2-dioxaphosphinan -5-yl) methyl methyl methylphosphonate | 7.5% | Free | 0.7% |
| 2931 48 00 | 3,9-Dimethyl-2,4,8,10-tetraoxa-3,9-diphosphaspiro [5.5] undecane 3,9-dioxide | 7.5% | Free | 0.7% |
| 2931 49 10 | Sodium 3-(trihydroxysilyl) propyl methylphosphonateOther | 7.5% | Free | 0.7% |
| 2931 49 20 | Bis[(5-ethyl-2-methyl-2-oxido-1,3,2-dioxaphosphinan -5-yl)methyl] methylphosphonate.Other | 7.5% | Free | 0.7% |
| 2931 49 30 | Glyphosate (ISO)Other | 7.5% | Free | 0.7% |
| 2931 49 40 | Butyl methylphosphinate | 7.5%Finance Act 2025 | — | — |
| 2931 49 50 | Bis(1-methylpentyl) methylphosphonate | 7.5%Finance Act 2025 | — | — |
| 2931 49 91 | Containing a phosphorus atom to which one methyl, ethyl, n-propyl or isopropyl group is bonded but no further carbon atoms | 7.5%Finance Act 2025 | — | — |
| 2931 49 99 | Other | 7.5%Finance Act 2025 | — | — |
| 2931 51 00 | Methylphosphonic dichloride | 7.5% | Free | 0.7% |
| 2931 52 00 | Propylphosphonic dichloride | 7.5% | Free | 0.7% |
| 2931 53 00 | O-(3-chloropropyl) O-[4-nitro-3-(trifluoromethyl) phenyl] methylphosphonothionate | 7.5% | Free | 0.7% |
| 2931 54 00 | Trichlorfon (ISO) | 7.5% | Free | 0.7% |
| 2931 59 10 | P-Alkyl (≤C10, incl. cycloalkyl) N-(1-(dialkyl | 7.5%Finance Act 2025 | — | — |
| 2931 59 20 | Methyl-(bis(diethylamino)methylene) phosphonamidofluoridate | 7.5%Finance Act 2025 | — | — |
| 2931 59 31 | Ethephon | 7.5%Finance Act 2025 | — | — |
| 2931 59 39 | Other | 7.5%Finance Act 2025 | — | — |
| 2931 59 90 | Other | 7.5%Finance Act 2025 | — | — |
| 2931 90 11 | Methylarsonic acid and its saltOrgano-arsenic compounds | 7.5% | Free | 0.7% |
| 2931 90 12 | Cacodylic acid and its saltOrgano-arsenic compounds | 7.5% | Free | 0.7% |
| 2931 90 13 | p-Aminophenylarsonic acid and its saltOrgano-arsenic compounds | 7.5% | Free | 0.7% |
| 2931 90 14 | Amino-hydroxyphenylarsonic acids, their formyl and acetyl derivatives and their saltsOrgano-arsenic compounds | 7.5% | Free | 0.7% |
| 2931 90 15 | Arsenobenzene and its derivativesOrgano-arsenic compounds | 7.5% | Free | 0.7% |
| 2931 90 19 | OtherOrgano-arsenic compounds | 7.5% | Free | 0.7% |
| 2931 90 20 | Organo-silicon compoundsOrgano-arsenic compounds | 7.5% | Free | 0.7% |
| 2931 90 30 | o-Iodosobenzoic acidOrgano-arsenic compounds | 7.5% | Free | 0.7% |
| 2931 90 90 | OtherOrgano-arsenic compounds | 7.5% | Free | 0.7% |
Basic customs duty is the standard rate in the First Schedule to the Customs Tariff Act. An exemption notification or a trade agreement can lower the duty actually payable. RoDTEP is a percentage of FOB value for exports from the domestic tariff area.
GST Rate on HSN 2931
GST on goods is fixed by the entries of Notification No. 9/2025-Central Tax (Rate), in force from 22 September 2025 and amended up to 30 April 2026. The rate shown is the total: half is central tax and half is State tax on a sale within a State, and the whole is charged as IGST on an inter-State sale or an import. Read the description in the entry, not only the code: the same heading can sit in two Schedules.
| GST rate | Entry | Codes named | Goods covered by the entry |
|---|---|---|---|
| 5% | Schedule I, S. No. 222 | 29 or 3808 93 | Gibberellic acid (chapter-wide entry) |
| 18% | Schedule II, S. No. 36 | 29 | All organic chemicals other than giberellic acid (chapter-wide entry) |
| 18% | Schedule II, S. No. 639 | Any Chapter | Goods which are not specified in Schedule I, III, IV, V, VI or VII (residual entry) |
Goods of this heading that fall under no specific entry take the residual entry, unless they are exempt under the exemption notification issued with the rate notification.
Customs Duty on HSN 2931
An import pays three things: basic customs duty at the tariff rate, social welfare surcharge at 10% of that duty (unless exempted for the goods), and IGST at the GST rate on the value plus both duties. A registered importer takes credit of the IGST.
- Basic customs duty at
- Social welfare surcharge, 10% of the duty
- IGST at on value plus both
- Total duty and tax
- As a share of the value
Standard rates only: no exemption notification, anti-dumping or safeguard duty, or trade-agreement rate is applied, and the surcharge is taken at 10% although some goods are exempted from it. A registered importer takes credit of the IGST.
One or more tariff lines of this heading were substituted by the Finance Act 2025. The table above already shows the amended rate for those lines.
Whether an import is Free, Restricted or Prohibited is set line by line in ITC(HS) Schedule 1 (Import Policy), read with its General Notes on standards, quarantine and packaging. That policy line is not reproduced on this page; check it before you place the order.
Export Policy and RoDTEP for HSN 2931
Under Schedule 2 of ITC(HS) 2022 the 36 tariff items are marked: 27 Free, 9 not shown in the Schedule text. “Free” means no export authorisation is needed; a Restricted item needs one from DGFT, and an STE item moves only through the named State trading enterprise.
RoDTEP is notified for 27 of the 36 tariff items, at 0.7% of FOB value (Appendix 4R, for exports from the domestic tariff area). The scheme continues up to 31 December 2026 at the rates in force on 30 September 2026.
The rate was cut by half for one month in 2026 and then restored. A shipping bill dated from 23 February to 22 March 2026 carries the reduced rate.
- Current RoDTEP schedule takes effectAppendix 4R and 4RE notified by Notification 32/2024-25.
- All rates and caps limited to 50%Notification 60/2025-26, with immediate effect.
- Full rates restoredNotification 66/2025-26 and its corrigendum: the rates of 22 February 2026 apply again from 23 March.
- Scheme continued to 30 September 2026Notification 74/2025-26, rates unchanged.
- Scheme continued to 31 December 2026Notification 41/2026-27: rates and caps as on 30 September 2026 continue.
- The item-wise import policy (Free, Restricted or Prohibited) of ITC(HS) Schedule 1. Check it before you place an order.
- Exemption notifications, anti-dumping and safeguard duties, and preferential rates under trade agreements. The duty shown is the tariff rate.
- The GST exemption notification. Goods exempt under it pay no GST even if the heading is named in a rate entry.
Official documents behind this page
- Notification No. 9/2025-Central Tax (Rate), 17 September 2025GST rate Schedules I to VI, in force from 22 September 2025, as amended by Notification No. 19/2025-Central Tax (Rate) of 31 December 2025 (Schedule VII omitted from 1 February 2026) and No. 01/2026 of 30 April 2026.
- Customs Tariff, First ScheduleCBIC Customs Tariff as on 30 June 2024, with the First Schedule amendments of the Finance (No. 2) Act, 2024, the Finance Act, 2025 and the Finance Act, 2026 applied.
- ITC(HS) 2022, Schedule 2, Export PolicyDGFT: the export policy and policy condition of each tariff item.
- Appendix 4R and Appendix 4RE, RoDTEP ScheduleDGFT, with effect from 10 October 2024 (Notification No. 32/2024-25); the 2026 changes are in Notifications 60, 66 and 74 of 2025-26 and 41 of 2026-27.
Disclaimer: This guide is general information based on the law and notifications in force when it was last updated. It is not professional advice for your case — rates, thresholds and due dates change, so check the current position with the official source before you act on it.