m-Tolyl isocyanate
Also known as: 1-Isocyanato-3-methylbenzene, 3-Methylphenyl isocyanate, 3-Tolyl isocyanate, m-Isocyanatotoluene, Isocyanic acid m-tolyl ester, Benzene, 1-isocyanato-3-methyl-
m-Tolyl isocyanate (CAS 621-29-4) is a compound in the Solvents category listed in the Jingsj chemical database. It has the molecular formula C8H7NO and a molecular weight of 133.147 g/mol. Key properties include a melting point of 195 - 198ºC, a boiling point of 197.2±9.0 °C at 760 mmHg, a density of 1.0±0.1 g/cm3 and a flash point of 66.8±21.3 °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 Aug 21, 2026.
- CAS No.
- 621-29-4
- Jingsj CID
- J-1375631-5
- Molecular Formula
- C8H7NO
- Molecular Weight
- 133.147 g/mol
- Category
- Solvents
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 195 - 198ºC |
|---|---|
| Boiling Point | 197.2±9.0 °C at 760 mmHg |
| Density | 1.0±0.1 g/cm3 |
| Flash Point | 66.8±21.3 °C |
| Exact Mass | 133.052765 |
| PSA | 29.43000 |
| LogP | 3.04 |
| Vapor Pressure | 0.4±0.4 mmHg at 25°C |
| Refractive Index | 1.519 |
GHS Safety & Compliance
- 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
Customs & Trade Information
| HS Code | 2929109000 |
|---|---|
| Summary | 2929109000. other isocyanates. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:30.0% |
Frequently Asked Questions
What is the CAS number of m-Tolyl isocyanate?
The CAS number of m-Tolyl isocyanate is 621-29-4.
What are the molecular formula and molecular weight of m-Tolyl isocyanate?
m-Tolyl isocyanate has molecular formula C8H7NO and molecular weight 133.147 g/mol.
Is m-Tolyl isocyanate hazardous?
m-Tolyl isocyanate 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 m-Tolyl isocyanate?
For m-Tolyl isocyanate, Upstream Products: Bis(trichloromethyl) carbonate, m-Toluidine, 3-Nitrotoluene; Downstream Products: 3-Methylphenyl isothiocyanate, 1-(1-([1,2,4]triazolo[1,5-a]pyridin-6-yl)-1-((tert-butyldimethylsilyl)oxy)propan-2-yl)-3-(m-tolyl)urea, Phenmedipham.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "m-Tolyl isocyanate (CAS 621-29-4)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1375631-5 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.