Where tariff item 2931 90 14 sits in the schedule
| Level | Description |
|---|
| 29 | Chapter 29: Organic chemicals |
| 2931 | Heading 2931: Other organo-inorganic compounds |
| 2931 90 | Sub-heading 2931 90: Other |
| 2931 90 14 | Amino-hydroxyphenylarsonic acids, their formyl and acetyl derivatives and their salts. Unit: kg.. Import policy: Free |
Heading 2931 holds 26 tariff items in this dataset and every one of them carries the same standard rate of 7.5%, so within this heading the choice of eight digit line does not change the duty.
Duty on an import of this item
Put your own assessable value in and the whole stack re-works on this line's own rates: basic customs duty at 7.5%, the Social Welfare Surcharge charged on that duty rather than on the value, and integrated tax at 18% on the value plus both. Assessable value is cost, insurance and freight plus landing charges where they apply, not the invoice value on its own.
| Rate | Levy | Amount |
|---|
| 7.5% | Basic customs duty, of the assessable value | ₹75,000 |
| 10% | Social Welfare Surcharge, of the basic customs duty | ₹7,500 |
| 18% | IGST, of value plus the duties above | ₹1,94,850 |
| 27.74% | Total duty and tax, as a share of the assessable value | ₹2,77,350 |
₹75,000Payable with a duty-credit scripOf this, the basic customs duty of ₹75,000 can be paid with duty credit scrips. The remaining ₹2,02,350 is paid in cash. RoDTEP on this tariff line, the export side
The same eight digit code decides what an exporter earns. Appendix 4R to the Handbook of Procedures gives tariff item 2931 90 14 a RoDTEP rate of 0.7% of FOB value, notified by Notification 32/2024-25 and in force from 10 October 2024. Appendix 4R is the schedule for exports from the Domestic Tariff Area.
An exporter under an Advance Authorisation, an Export Oriented Unit or a unit in a Special Economic Zone reads Appendix 4RE instead, which puts this line at 0.4%. Which schedule applies is a fact about the exporter, not about the goods, so this page does not choose between them.
Notification 74/2025-26 ran the scheme to 30 September 2026, which has passed, so check DGFT for a continuation notification before relying on the figure above. Rates come from Appendix 4R and Appendix 4RE as DGFT publishes them. Work the entitlement on your own FOB value and quantity.
Preferential rates by origin
Where a trade agreement covers this line, the preferential rate replaces the basic customs duty rate, and it pulls the surcharge and the integrated tax down with it. At 0% for Least Developed Countries, the whole bill on ₹10,00,000 falls from ₹2,77,350 to ₹1,80,000.
Least Developed Countries0%
Nepal0%
SAFTA (LDC) countries0%
Sri Lanka0%
Australia3.2%
Singapore3.75%
Malaysia5%
SAFTA countries5%
APTA countries6%
United Arab Emirats6%
the republic of Korea6.25%
A preference is never automatic. It applies against a valid certificate of origin, and the Customs (Administration of Rules of Origin under Trade Agreements) Rules, 2020 put the burden of proving origin on the importer. These are the 2025 schedule.
Other tariff items under heading 2931
| Code | Description | Duty | IGST | Export rate |
|---|
| 2931 10 10 | Tetramethyl lead | 7.5% | 18% | 0.7% |
| 2931 10 90 | Tetraethyl lead | 7.5% | 18% | 0.7% |
| 2931 20 00 | Tributyltin compounds derivatives | 7.5% | 18% | 0.7% |
| 2931 41 00 | Dimethyl methylphosphonate | 7.5% | 18% | 0.7% |
| 2931 42 00 | Dimethyl propylphosphonate | 7.5% | 18% | 0.7% |
| 2931 43 00 | Diethyl ethylphosphonate | 7.5% | 18% | 0.7% |
| 2931 44 00 | Methylphosphonic acid | 7.5% | 18% | 0.7% |
| 2931 45 00 | Salt of methylphosphonic acid and (aminoiminomethyl) urea (1: 1) | 7.5% | 18% | 0.7% |
| 2931 46 00 | 2,4,6-Tripropyl-1,3,5,2,4,6-trioxatriphosphinane 2,4, -trioxide | 7.5% | 18% | 0.7% |
| 2931 47 00 | (5-Ethyl-2-methyl-2-oxido-1,3,2-dioxaphosphinan -5-yl) methyl methyl methylphosphonate | 7.5% | 18% | 0.7% |
| 2931 48 00 | 3,9-Dimethyl-2,4,8,10-tetraoxa-3,9-diphosphaspiro [5.5] undecane 3,9-dioxide | 7.5% | 18% | 0.7% |
| 2931 49 10 | Sodium 3-(trihydroxysilyl) propyl methylphosphonate | 7.5% | 18% | 0.7% |
| 2931 49 20 | Bis[(5-ethyl-2-methyl-2-oxido-1,3,2-dioxaphosphinan -5-yl)methyl] methylphosphonate | 7.5% | 18% | 0.7% |
| 2931 51 00 | Methylphosphonic dichloride | 7.5% | 18% | 0.7% |
| 2931 52 00 | Propylphosphonic dichloride | 7.5% | 18% | 0.7% |
| 2931 53 00 | O-(3-chloropropyl) O-[4-nitro-3-(trifluoromethyl) phenyl] methylphosphonothionate | 7.5% | 18% | 0.7% |
| 2931 54 00 | Trichlorfon (ISO) | 7.5% | 18% | 0.7% |
| 2931 90 11 | Methylarsonic acid and its salt | 7.5% | 18% | 0.7% |
| 2931 90 12 | Cacodylic acid and its salt | 7.5% | 18% | 0.7% |
| 2931 90 13 | p-Aminophenylarsonic acid and its salt | 7.5% | 18% | 0.7% |
| 2931 90 15 | Arsenobenzene and its derivatives | 7.5% | 18% | 0.7% |
| 2931 90 19 | Other | 7.5% | 18% | 0.7% |
| 2931 90 20 | Organo-silicon compounds | 7.5% | 18% | 0.7% |
| 2931 90 30 | o-Iodosobenzoic acid | 7.5% | 18% | 0.7% |
What this means in plain English
Bring in ₹10,00,000 of amino-hydroxyphenylarsonic acids, their formyl and acetyl derivatives and their salts and customs will ask for ₹2,77,350, which is 27.74% of what the consignment is assessed at. That is not one charge. It is four, and each is charged on a base that includes the ones before it.
- Basic customs duty, ₹75,000 at 7.5% of the assessable value.
- Social Welfare Surcharge, ₹7,500 at 10% of that duty rather than of the value, under section 110 of the Finance Act, 2018.
- Integrated tax, the large one: ₹1,94,850 at 18% on the value plus the duties above it, under section 3(8) of the Customs Tariff Act, 1975. Carried under CBIC notification 045/2025, schedule I229.
Read the duty rate as a ceiling, not a bill. 7.5% is the standard rate in the First Schedule, before any exemption notification, and the total above carries no Agriculture Infrastructure and Development Cess, no duty stated per unit and no trade remedy duty.
What is and is not inside these figures, written once for the whole chapter.
Paying part of this with a duty-credit scrip
Of the ₹2,77,350 above, exactly ₹75,000 can be paid with a RoDTEP or RoSCTL duty-credit scrip instead of cash, because Regulation 6(1) of the Electronic Duty Credit Ledger Regulations, 2021 confines the credit in an e-scrip to duties of customs specified in the First Schedule to the Customs Tariff Act, 1975. The remaining ₹2,02,350 is paid in cash.
A scrip bought below face value therefore saves that discount on ₹75,000, not on ₹2,77,350. How the buy side works, or read what a duty-credit scrip is end to end.
Where these rates come from
The First Schedule states the duty on this line as "7.5%". Integrated tax is carried under CBIC notification 045/2025. How the figures in this chapter are checked, and when they were last checked is in the meta line at the top of this page.
This is the tariff arithmetic on a published rate, not an assessment. Goods are assessed by the proper officer under section 17 of the Customs Act, 1962, and valuation, exemption notifications, anti-dumping and safeguard duties can all change what is finally payable. A wrong tariff line makes every number on this page wrong together, so this is not classification advice.
