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Toluene-2,6-diisocyanate

Also known as: 2,6-Tolylene diisocyanate, 2,6-TDI, 2-Methyl-m-phenylene diisocyanate, 1,3-Diisocyanato-2-methylbenzene, 2,6-Diisocyanato-1-methylbenzene, Isocyanic acid, 2-methyl-m-phenylene ester, Tolylene 2,6-diisocyanate, 2,6-Toluene diisocyanate

Toluene-2,6-diisocyanate (CAS 91-08-7) is a compound in the Solvents category listed in the Jingsj chemical database. It has the molecular formula C9H6N2O2 and a molecular weight of 174.15600 g/mol. Key properties include a melting point of 13°C, a boiling point of 129-133 °C18 mm Hg(lit.), a density of 1.225 g/mL at 25 °C(lit.) and a flash point of >110.0 °C. It is classified under GHS with signal word Danger and hazard statements H315 — Causes skin irritation, H317 — May cause an allergic skin reaction and H319 — Causes serious eye irritation. No supplier offers are currently listed; request a quote. Record last updated Nov 3, 2026.

CAS No.
91-08-7
Jingsj CID
J-16064-5
Molecular Formula
C9H6N2O2
Molecular Weight
174.15600 g/mol
Category
Solvents
Last updated
11/3/2026
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Physicochemical Properties

Melting Point13°C
Boiling Point129-133 °C18 mm Hg(lit.)
Density1.225 g/mL at 25 °C(lit.)
Flash Point>110.0 °C
Exact Mass174.04300
PSA58.86000
LogP1.92960
Refractive Indexn20/D 1.571(lit.)
Storage Conditions−20°C
StabilityStability Reacts violently with water. Reacts very rapidly with compounds containing an active hydrogen, such as amines, alcohols and acids. Polymerizes rapidly in the presence of base. Combustible. Incompatible with strong oxidizing agents.

GHS Safety & Compliance

Acute Toxicity / Health HazardSignal word: Danger
  • H315 — Causes skin irritation
  • H317 — May cause an allergic skin reaction
  • H319 — Causes serious eye irritation
  • H330 — Fatal if inhaled
  • H334 — May cause allergy or asthma symptoms if inhaled
  • H335 — May cause respiratory irritation
  • H351 — Suspected of causing cancer
  • H412 — Harmful to aquatic life with long lasting effects

Frequently Asked Questions

What is the CAS number of Toluene-2,6-diisocyanate?

The CAS number of Toluene-2,6-diisocyanate is 91-08-7.

What are the molecular formula and molecular weight of Toluene-2,6-diisocyanate?

Toluene-2,6-diisocyanate has molecular formula C9H6N2O2 and molecular weight 174.15600 g/mol.

Is Toluene-2,6-diisocyanate hazardous?

Toluene-2,6-diisocyanate has GHS signal word Danger and hazard statements H315 — Causes skin irritation; H317 — May cause an allergic skin reaction; H319 — Causes serious eye irritation.

What are the upstream and downstream products of Toluene-2,6-diisocyanate?

For Toluene-2,6-diisocyanate, Upstream Products: 2,6-Diaminotoluene, 4-Methylbenzene-1,3-diamine, Obtucarbamate B; Downstream Products: 2,6-Diaminotoluene, Carbon.

Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.

Last updated:

How to cite: Jingsj. "Toluene-2,6-diisocyanate (CAS 91-08-7)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-16064-5 (accessed 2026-11-09).

Data for reference only; verify product details with suppliers before purchase.