Silanol, 1,1,1-trimethyl-, 1,1',1''-triester with boric acid (H3BO3) (CAS 4325-85-3): import duty, licences and trade rules in India
For trade in India: No ban or licence needed. Normal trade rules apply; handle as its safety advice says. Import duty is about 27.73% (tariff item 2931 (estimate)).
Checked 2026-10-31 against official Indian and international lists. Sources are given under each answer.
Key facts
| CAS number | 4325-85-3 |
|---|---|
| Formula | C9H27BO3Si3 |
| Also called | Silanol, 1,1,1-trimethyl-, 1,1',1''-triester with boric acid (H3BO3), RefChem:885385, Tris(trimethylsiloxy)boron, Tris(trimethylsilyl)borate |
| Tariff item (HS) | 2931 (estimate) |
| Total import duty | about 27.73% |
| 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.
- Normal factory, storage and GST rules still apply.
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.
Import dutyOK
- About ₹27,730 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 structure: 2931, other organo-inorganic compounds (e.g. organo-phosphorus, organo-silicon) (phosphorus, silicon or boron bonded to carbon).
- All lines under heading 2931 pay basic customs duty 7.5%; with social welfare surcharge and IGST 18% that makes about 27.73%.
- Confirm the exact 8-digit code with your customs broker before you import.
SafetyCHECK
- Catches fire easily
- Irritates skin, eyes or breathing
- Flammable liquid and vapor
- Causes skin irritation
- Causes serious eye irritation
- May cause respiratory irritation
- Always read the supplier’s safety data sheet (SDS) before handling.
Price and suppliersNO DATA
- Post a requirement and we will find suppliers for you.
Questions about Silanol, 1,1,1-trimethyl-, 1,1',1''-triester with boric acid (H3BO3)
What is the import duty on Silanol, 1,1,1-trimethyl-, 1,1',1''-triester with boric acid (H3BO3) in India?
The total import duty on Silanol, 1,1,1-trimethyl-, 1,1',1''-triester with boric acid (H3BO3) is about 27.73% of the import value under tariff item 2931 (estimate), including basic customs duty, the social welfare surcharge and IGST. Check the latest notifications before you import.
Is there anti-dumping duty on Silanol, 1,1,1-trimethyl-, 1,1',1''-triester with boric acid (H3BO3)?
No anti-dumping duty on Silanol, 1,1,1-trimethyl-, 1,1',1''-triester with boric acid (H3BO3) was found in the Customs (ADD) notifications in force.
What is the HS code (tariff item) of Silanol, 1,1,1-trimethyl-, 1,1',1''-triester with boric acid (H3BO3) in India?
Silanol, 1,1,1-trimethyl-, 1,1',1''-triester with boric acid (H3BO3) falls under tariff item 2931 (estimate) of the Customs Tariff of India.
Is Silanol, 1,1,1-trimethyl-, 1,1',1''-triester with boric acid (H3BO3) restricted or licensed in India?
No special Indian ban or licence found. Not on the Indian banned-pesticide, drug-precursor, narcotic, psychotropic or new-drug lists we check. Normal factory, storage and GST rules still apply.
Does exporting Silanol, 1,1,1-trimethyl-, 1,1',1''-triester with boric acid (H3BO3) from India need a licence?
No export licence needed. Not on the SCOMET export-control list or the precursor export list.
Is Silanol, 1,1,1-trimethyl-, 1,1',1''-triester with boric acid (H3BO3) hazardous?
Hazardous: take normal precautions. Catches fire easily. Irritates skin, eyes or breathing. Flammable liquid and vapor.
Is Silanol, 1,1,1-trimethyl-, 1,1',1''-triester with boric acid (H3BO3) 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.
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Guidance from official lists, not legal advice. Rules change; confirm with DGFT, customs or the regulator before you trade.