1,2,3-Trimethylbenzene

Also known as: 1,2,3-Trimethyl-benzene, 1,2,3-trimethyl benzene, 1,2,3-trimethylbenzene, Arsonium,bromotrimethyl-,bromide, Benzene, 1,2,3-trimethyl-, EINECS 208-394-8, Hemimellitene, MFCD00008520, Trimethyl benzene, Trimethylarsendibromid, Trimethylarsoniumbromid, benzene, trimethyl-, hemimelliten, trimethylarsenic dibromide, trimethylbenzene, trimethylbenzol, 1,2,3-

1,2,3-Trimethylbenzene (CAS 526-73-8) is a compound in the Solvents category listed in the Jingsj chemical database. It has the molecular formula C9H12 and a molecular weight of 120.192 g/mol. Key properties include a melting point of −25 °C(lit.), a boiling point of 176.8±20.0 °C at 760 mmHg, a density of 0.9±0.1 g/cm3 and a flash point of 53.1±7.3 °C. It is classified under GHS with signal word Warning and hazard statements H226 — Flammable liquid and vapour, H315 — Causes skin irritation and H319 — Causes serious eye irritation. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 526-73-8
Jingsj CID: J-1032459-4
Molecular Formula: C₉H₁₂
Molecular Weight: 120.192 g/mol
Category: Solvents
Last updated: 8/21/2026

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Physicochemical Properties

Melting Point	−25 °C(lit.)
Boiling Point	176.8±20.0 °C at 760 mmHg
Density	0.9±0.1 g/cm3
Flash Point	53.1±7.3 °C
Exact Mass	120.093903
LogP	3.60
Additional Property	4.15 (vs air)
Vapor Pressure	1.4±0.2 mmHg at 25°C
Refractive Index	1.501

GHS Safety & Compliance

Flammable / IrritantSignal word: Warning

H226 — Flammable liquid and vapour
H315 — Causes skin irritation
H319 — Causes serious eye irritation
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 1,2,3-Trimethylbenzene?

The CAS number of 1,2,3-Trimethylbenzene is 526-73-8.

What are the molecular formula and molecular weight of 1,2,3-Trimethylbenzene?

1,2,3-Trimethylbenzene has molecular formula C9H12 and molecular weight 120.192 g/mol.

Is 1,2,3-Trimethylbenzene hazardous?

1,2,3-Trimethylbenzene has GHS signal word Warning and hazard statements H226 — Flammable liquid and vapour; H315 — Causes skin irritation; H319 — Causes serious eye irritation.

What are the upstream and downstream products of 1,2,3-Trimethylbenzene?

For 1,2,3-Trimethylbenzene, Upstream Products: (2,3-dimethylphenyl)methanol, 1,2,4-TRIMETHYL BENZENE, 1-tert-butyl-3,4,5-trimethylbenzene; Downstream Products: 1-Aminobenzene-3,4,5-tricarboxylic acid, 2,6-Dimethylphenol, 2,3-Dimethylphenol.

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

Last updated: 8/21/2026

How to cite: Jingsj. "1,2,3-Trimethylbenzene (CAS 526-73-8)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1032459-4 (accessed 2026-11-07).

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