3-methylstyrene
Also known as: 1-Methyl-3-vinylbenzene, 1-ethenyl-3-methylbenzene, 3-Methylstyrene (stabilized with TBC), 3-Vinyltoluene, EINECS 202-889-2, MFCD00008617
3-methylstyrene (CAS 100-80-1) is a compound in the Aromatic Hydrocarbons category listed in the Jingsj chemical database. It has the molecular formula C9H10 and a molecular weight of 118.17600 g/mol. Key properties include a melting point of −82-−81 °C(lit.), a boiling point of 170-171 °C(lit.), a density of 0.901 g/mL at 20 °C and a flash point of 51.1 °C. It is classified under GHS with signal word Danger and hazard statements H226 — Flammable liquid and vapour, H304 and H315 — Causes skin irritation. No supplier offers are currently listed; request a quote. Record last updated Nov 2, 2026.
- CAS No.
- 100-80-1
- Jingsj CID
- J-18349-3
- Molecular Formula
- C9H10
- Molecular Weight
- 118.17600 g/mol
- Category
- Aromatic Hydrocarbons
- Last updated
- 11/2/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | −82-−81 °C(lit.) |
|---|---|
| Boiling Point | 170-171 °C(lit.) |
| Density | 0.901 g/mL at 20 °C |
| Flash Point | 51.1 °C |
| Exact Mass | 118.07800 |
| LogP | 2.63800 |
| Refractive Index | n20/D 1.541(lit.) |
GHS Safety & Compliance
- H226 — Flammable liquid and vapour
- H304
- H315 — Causes skin irritation
- H319 — Causes serious eye irritation
- H332 — Harmful if inhaled
- H335 — May cause respiratory irritation
Customs & Trade Information
| HS Code | 2902909090 |
|---|---|
| Summary | 2902909090 other aromatic hydrocarbons。Supervision conditions:None。VAT:17.0%。Tax rebate rate:9.0%。MFN tariff:2.0%。General tariff:30.0% |
Frequently Asked Questions
What is the CAS number of 3-methylstyrene?
The CAS number of 3-methylstyrene is 100-80-1.
What are the molecular formula and molecular weight of 3-methylstyrene?
3-methylstyrene has molecular formula C9H10 and molecular weight 118.17600 g/mol.
Is 3-methylstyrene hazardous?
3-methylstyrene has GHS signal word Danger and hazard statements H226 — Flammable liquid and vapour; H304; H315 — Causes skin irritation.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "3-methylstyrene (CAS 100-80-1)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-18349-3 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.