Osmium Tetroxide (CAS 20816-12-0): import duty, licences and trade rules in India
Osmium tetroxide is an osmium coordination entity consisting of four oxygen atoms bound to a central osmium atom via covalent double bonds. For trade in India: OK to trade, but watch: safety. Import duty is about 30.98% (tariff item 2843 (estimate)).
Checked 2026-10-31 against official Indian and international lists. Sources are given under each answer.
Key facts
| CAS number | 20816-12-0 |
|---|---|
| Formula | O4Os |
| Also called | Osmium tetraoxide, Osmic acid, tetraoxoosmium, Osmium(VIII) oxide |
| Tariff item (HS) | 2843 (estimate) |
| Total import duty | about 30.98% |
| Anti-dumping duty (most producers) | None found |
| SCOMET (export control) | Not listed |
| NDPS / precursor | Not listed |
Every answer, with its source
Rules in IndiaOK
- Not on the Indian banned-pesticide, drug-precursor, narcotic, psychotropic or new-drug lists we check.
- On India’s hazardous chemicals list (MSIHC Rules 1989). Importers must send the State authorities the consignment details and full safety information before each import (30 days ahead where possible, never later than the import date) and keep import records.
Exporting from IndiaOK
- Not on the SCOMET export-control list or the precursor export list.
- The buyer’s country may still have its own import rules.
Global treaties & export marketsOK
- Not listed by the Stockholm Convention (persistent pollutants), the Rotterdam Convention (prior consent before export) or the Montreal Protocol (ozone layer).
- No EU REACH registration found: an EU importer (or your only representative) must register it before importing a tonne or more a year. Medicines and pesticide actives follow their own EU rules.
- Active on the US TSCA Inventory, so it can be imported into the US without a new-chemical notice.
- Listed on the Australian Inventory of Industrial Chemicals (AICIS), so it can be introduced into Australia as an existing industrial chemical.
- EU: harmonised classification (CLP Annex VI, index 076-001-00-5): Acute Tox. 2, Acute Tox. 1, Skin Corr. 1B. Suppliers in the EU must label it this way.
Import dutyOK
- About ₹30,980 duty on every ₹1,00,000 of import value (CIF).
- No tariff line names this chemical, so we worked out its likely heading from its name: 2843, precious-metal compounds (compound of osmium).
- All lines under heading 2843 pay basic customs duty 10%; with social welfare surcharge and IGST 18% that makes about 30.98%.
- Confirm the exact 8-digit code with your customs broker before you import.
SafetySTOP
- Burns skin and eyes, eats into metal
- Poisonous, even in small amounts
- Can cause long-term health damage
- Fatal if swallowed
- Fatal in contact with skin
- Causes severe skin burns and eye damage
- Fatal if inhaled
- May cause allergy or asthma symptoms or breathing difficulties if inhaled
- Always read the supplier’s safety data sheet (SDS) before handling.
Storage, transport & PESOOK
- Ships as UN 2471 (Poison): dangerous-goods rules apply by road, sea (IMDG) and air (IATA), with labels, packaging and a transport document.
Price and suppliersNO DATA
- Post a requirement and we will find suppliers for you.
Questions about Osmium Tetroxide
What is the import duty on Osmium Tetroxide in India?
The total import duty on Osmium Tetroxide is about 30.98% of the import value under tariff item 2843 (estimate), including basic customs duty, the social welfare surcharge and IGST. Check the latest notifications before you import.
Is there anti-dumping duty on Osmium Tetroxide?
No anti-dumping duty on Osmium Tetroxide was found in the Customs (ADD) notifications in force.
What is the HS code (tariff item) of Osmium Tetroxide in India?
Osmium Tetroxide falls under tariff item 2843 (estimate) of the Customs Tariff of India.
Is Osmium Tetroxide restricted or licensed in India?
No ban or licence; import paperwork applies. Not on the Indian banned-pesticide, drug-precursor, narcotic, psychotropic or new-drug lists we check. On India’s hazardous chemicals list (MSIHC Rules 1989). Importers must send the State authorities the consignment details and full safety information before each import (30 days ahead where possible, never later than the import date) and keep import records.
Does exporting Osmium Tetroxide from India need a licence?
No export licence needed. Not on the SCOMET export-control list or the precursor export list.
Is Osmium Tetroxide hazardous?
Very hazardous: strict controls needed. Burns skin and eyes, eats into metal. Poisonous, even in small amounts. Can cause long-term health damage.
Is Osmium Tetroxide regulated under global treaties or in the EU and US?
No treaty or export-market restriction found. Not listed by the Stockholm Convention (persistent pollutants), the Rotterdam Convention (prior consent before export) or the Montreal Protocol (ozone layer). No EU REACH registration found: an EU importer (or your only representative) must register it before importing a tonne or more a year. Medicines and pesticide actives follow their own EU rules.
Related chemicals
Guidance from official lists, not legal advice. Rules change; confirm with DGFT, customs or the regulator before you trade.