TDI mixed isomers (toluene diisocyanate, 80:20 + 65:35 blends) under IECSC
C9H6N2O2 · 甲苯二异氰酸酯
Status: Listed. TDI is on the IECSC public portion. New-substance notification under MEE Decree No. 7 (2010) is NOT required. **TDI IS on China's Catalog of Hazardous Chemicals** (Carc 2 + Acute Tox. 2 inhalation + Resp. Sens. 1 + Skin Sens. 1 classification). Hazardous Chemicals Operation Permit IS required. **TDI IS on China's Highly Toxic Chemicals Catalog** (Acute Tox. 2 inhalation H330 "fatal if inhaled" justifies Highly Toxic listing): heaviest-compliance substance alongside phenol batch 13 + formaldehyde batch 18 + benzene batch 22 + aniline batch 26 + EO batch 28. NOT on Easily-Made Drugs Precursor Chemicals Catalog. **0% China VAT export rebate** for TDI (HS 292910). China dominates global TDI capacity (~50%, ~3-4 Mt/yr) led by Wanhua Chemical Yantai.
TDI is comfortably IECSC-listed but IS on **BOTH the Catalog of Hazardous Chemicals AND the Highly Toxic Chemicals Catalog** (heavier-compliance than MDI batch 30 which is NOT on Highly Toxic). **0% China VAT export rebate**. China dominates global TDI capacity (~50%, ~3-4 Mt/yr) led by **Wanhua Chemical Yantai (a leading TDI producer with integrated upstream toluene batch 20 plus DNT plus TDA chain; verify the most recent TDI nameplate against the Wanhua Chemical investor site before quoting world-leading rank)**, Sinopec Yangtze + Sinopec Shanghai, Cangzhou Dahua TDI Chemical (Hebei), BASF Shanghai + BASF Chongqing. Production: toluene (batch 20) + nitric acid + sulfuric acid (batch 2) → DNT → TDA → phosgenation → TDI integrated route. **TDI is heavier-compliance than MDI batch 30 in China** (Highly Toxic listing) due to Acute Tox. 2 inhalation classification.
Listing and threshold
| Substance | TDI mixed isomers (toluene diisocyanate, 80:20 + 65:35 blends) (CAS 26471-62-5), C9H6N2O2 |
|---|---|
| Regime | China Inventory of Existing Chemical Substances (IECSC), administered by the Ministry of Ecology and Environment (MEE) |
| Jurisdiction | People's Republic of China |
| Status | Listed |
| Tonnage threshold | No new-substance threshold applies. Hazardous Chemicals Operation Permit required regardless of volume |
Classifications under this regime
- Listed in China's Catalog of Hazardous Chemicals
- **Listed in China's Highly Toxic Chemicals Catalog** (Public Security Bureau supervision; same level as phenol batch 13 + formaldehyde batch 18 + benzene batch 22 + aniline batch 26 + EO batch 28; heavier than MDI batch 30 which is NOT on Highly Toxic)
- NOT on the Easily-Made Drugs Precursor Chemicals Catalog
- GB/T 12431-2009 specification applies for industrial-grade TDI (Chinese national standard)
- GB/T 12431-2009 covers 80:20 (TDI 80) and 65:35 (TDI 65) isomer ratios, water content, hydrolysable chloride, NCO content
- GACC export classification: HS 292910 (TDI as monomeric form)
- China dominates global TDI capacity (~50%, ~3-4 Mt/yr); ~99% via toluene + nitric acid + sulfuric acid → DNT → TDA → phosgenation → TDI integrated route
- GB 6944-2012 dangerous-goods transport classification: Class 6.1 (toxic substance), UN 2078, PG II
Restrictions and conditions of use
- **Hazardous Chemicals Operation Permit IS required** for any party producing, storing, or distributing TDI
- **Highly Toxic Chemicals Public Security Bureau permit chain** required for production / storage / distribution
- Hazardous Chemicals Road Transport Permit required for road shipment
- Customs Inspection Order routinely applies for export consignments
- **0% China VAT export rebate** for TDI (HS 292910)
- GB/T 17519 Chinese-language SDS required for domestic distribution
Importer obligations
For Chinese-origin TDI exported abroad, no IECSC obligation falls on the foreign importer. The export-side documentation pack focuses on Hazardous Chemicals + **Highly Toxic Chemicals Public Security Bureau supervision dual-permit chain** (heavier than MDI batch 30 which is NOT on Highly Toxic). Major Chinese producers: **Wanhua Chemical Yantai (a leading TDI producer with integrated upstream toluene batch 20 plus DNT plus TDA chain; verify the most recent TDI nameplate against the Wanhua Chemical investor site before quoting world-leading rank)**, Sinopec Yangtze + Sinopec Shanghai, Cangzhou Dahua TDI Chemical (Hebei), BASF Shanghai + BASF Chongqing.
Required documents
- GACC export declaration with HS code 292910
- Industrial-grade certificate per GB/T 12431-2009
- GHS-compliant SDS in Simplified Chinese per GB/T 17519-2013 (effective 31 January 2014, references UN GHS 4th revised edition; verify against the current version of GB/T 17519 at https://www.codeofchina.com/standard/GBT17519-2013.html)
- Hazardous Chemicals Operation Permit chain documentation
- **Highly Toxic Chemicals Public Security Bureau permit chain documentation**
- GB 6944-2012 Class 6.1 dangerous-goods transport documentation
Common compliance traps
The pitfalls that have bitten importers on this lane in the past. None of these is theoretical.
- **Highly Toxic Chemicals + Hazardous Chemicals dual-permit chain is the heaviest compliance overhead** (alongside phenol batch 13 + formaldehyde batch 18 + benzene batch 22 + aniline batch 26 + EO batch 28; heavier than MDI batch 30)
- **0% China VAT export rebate**
- TDI is heavier-compliance than MDI batch 30 in IECSC (Highly Toxic listing)
- Major Chinese producers: **Wanhua Chemical Yantai (a leading TDI producer with integrated upstream toluene batch 20 plus DNT plus TDA chain; verify the most recent TDI nameplate against the Wanhua Chemical investor site before quoting world-leading rank)**, Sinopec Yangtze + Sinopec Shanghai, Cangzhou Dahua TDI Chemical (Hebei), BASF Shanghai + BASF Chongqing
- Production: toluene (batch 20) + nitric acid + sulfuric acid (batch 2) → DNT → TDA → phosgenation → TDI integrated route
- TDI 80 (80:20 isomer ratio) most common globally; TDI 65 (65:35) for specific applications
Where to read next
For substance-level identifiers (formula, molecular weight, SMILES, InChIKey), GHS hazard profile, IMDG transport class, and full sourcing reference for tdi mixed isomers (toluene diisocyanate, 80:20 + 65:35 blends), see the CAS 26471-62-5 sourcing reference.
For grade-by-grade buying notes, freight maths, supplier-tier pricing, and a worked landed-cost example, the tdi mixed isomers (toluene diisocyanate, 80:20 + 65:35 blends) cornerstone hub covers the full sourcing chain.
For the structure and history of IECSC, see the IECSC glossary entry.
Need cross-jurisdiction compliance support on this substance? Run it through the REACH / TSCA / IECSC / AICIS / K-REACH checker, or send us the substance and the destination and we will quote FOB China and CIF / DDP landed including the regulatory work on the destination side.
Read next
Cross-jurisdiction profile and sourcing references
Regulatory
TDI mixed isomers (toluene diisocyanate, 80:20 + 65:35 blends) under REACH
European Union listing status, classifications, importer obligations.
Regulatory
TDI mixed isomers (toluene diisocyanate, 80:20 + 65:35 blends) under TSCA
United States of America listing status, classifications, importer obligations.
Regulatory
TDI mixed isomers (toluene diisocyanate, 80:20 + 65:35 blends) under AICIS
Australia listing status, classifications, importer obligations.
Regulatory
TDI mixed isomers (toluene diisocyanate, 80:20 + 65:35 blends) under K-REACH
Republic of Korea listing status, classifications, importer obligations.
Glossary
IECSC, Inventory of Existing Chemical Substances in China
The Chinese national chemical inventory listing substances legally manufactured, imported, used, or sold in China before 2003. A substance not on IECSC requires a New Chemical Substance Notification (NCSN) under MEE Order 12 before it can be manufactured or imported into China. Functionally similar to TSCA in the US and REACH in the EU but with distinct procedural requirements.
Referenced in
5 pages across the Sourzi moat
This term shows up in 4 regulatory pages, 1 topic clusters. Sample backlinks per content type below.
Regulatory (4)
TDI mixed isomers (toluene diisocyanate, 80:20 + 65:35 blends) under REACH
European Union compliance profile for TDI mixed isomers (toluene diisocyanate, 80:20 + 65:35 blends).
TDI mixed isomers (toluene diisocyanate, 80:20 + 65:35 blends) under TSCA
United States of America compliance profile for TDI mixed isomers (toluene diisocyanate, 80:20 + 65:35 blends).
TDI mixed isomers (toluene diisocyanate, 80:20 + 65:35 blends) under AICIS
Australia compliance profile for TDI mixed isomers (toluene diisocyanate, 80:20 + 65:35 blends).
Plus 1 more regulatory pages.
Free download
Free PDF: the same MSDS verification template the Sourzi team uses to cross-reference factory documents against TSCA, REACH, AICIS, and CDR before booking.