2,5-Dimethyl-1,4-benzoquinone
Also known as: 2,5-Dimethyl-p-benzoquinone, 2,5-Dimethyl-p-quinone, 2,5-Dimethylbenzoquinone, 2,5-Xyloquinone, p-Xyloquinone, Phlorone, 2,5-Dimethylquinone, 2,5-Cyclohexadiene-1,4-dione, 2,5-dimethyl-
2,5-Dimethyl-1,4-benzoquinone (CAS 137-18-8) is a compound in the Ketones category listed in the Jingsj chemical database. It has the molecular formula C8H8O2 and a molecular weight of 136.148 g/mol. Key properties include a melting point of 123-125ºC, a boiling point of 200.9±15.0 °C at 760 mmHg, a density of 1.1±0.1 g/cm3 and a flash point of 71.1±17.4 °C. It is classified under GHS with signal word Danger and hazard statements H301 — Toxic if swallowed, 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.
- 137-18-8
- Jingsj CID
- J-33932-2
- Molecular Formula
- C8H8O2
- Molecular Weight
- 136.148 g/mol
- Category
- Ketones
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 123-125ºC |
|---|---|
| Boiling Point | 200.9±15.0 °C at 760 mmHg |
| Density | 1.1±0.1 g/cm3 |
| Flash Point | 71.1±17.4 °C |
| Exact Mass | 136.052429 |
| PSA | 34.14000 |
| LogP | 1.45 |
| Appearance | Crystalline Powder | Yellow to brown |
| Vapor Pressure | 0.3±0.4 mmHg at 25°C |
| Refractive Index | 1.511 |
| Additional Property | toluene: soluble0.5g/10 mL, clear to faintly turbid, yellow to brown |
GHS Safety & Compliance
- H301 — Toxic if swallowed
- H315 — Causes skin irritation
- H319 — Causes serious eye irritation
- H335 — May cause respiratory irritation
Customs & Trade Information
| HS Code | 2914690090 |
|---|---|
| Summary | 2914690090 other quinones。Supervision conditions:None。VAT:17.0%。Tax rebate rate:9.0%。MFN tariff:5.5%。General tariff:30.0% |
Frequently Asked Questions
What is the CAS number of 2,5-Dimethyl-1,4-benzoquinone?
The CAS number of 2,5-Dimethyl-1,4-benzoquinone is 137-18-8.
What are the molecular formula and molecular weight of 2,5-Dimethyl-1,4-benzoquinone?
2,5-Dimethyl-1,4-benzoquinone has molecular formula C8H8O2 and molecular weight 136.148 g/mol.
Is 2,5-Dimethyl-1,4-benzoquinone hazardous?
2,5-Dimethyl-1,4-benzoquinone has GHS signal word Danger and hazard statements H301 — Toxic if swallowed; H315 — Causes skin irritation; H319 — Causes serious eye irritation.
What are the upstream and downstream products of 2,5-Dimethyl-1,4-benzoquinone?
For 2,5-Dimethyl-1,4-benzoquinone, Upstream Products: 2,5-Dimethylphenol, p-Xylene, 4-Amino-2,5-dimethylphenol; Downstream Products: 2,4,5-Trimethylphenol, 2-Amino-4,7-dimethyl-6-hydroxybenzothiazole hydrochloride.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "2,5-Dimethyl-1,4-benzoquinone (CAS 137-18-8)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-33932-2 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.