1,3,5-Trimethoxybenzene
Also known as: Phloroglucinol trimethyl ether, sym-Trimethoxybenzene, Tri-O-methylphloroglucinol, 1,3,5-Trimethoxybenz, 3,5-DIMETHOXYANISOLE, Benzene, 1,3,5-trimethoxy-, TRISMETHOXYBENZENE
1,3,5-Trimethoxybenzene (CAS 621-23-8) is a compound in the Aromatic Hydrocarbons category listed in the Jingsj chemical database. It has the molecular formula C9H12O3 and a molecular weight of 168.190 g/mol. Key properties include a melting point of 50-53 °C(lit.), a boiling point of 257.0±20.0 °C at 760 mmHg, a density of 1.0±0.1 g/cm3 and a flash point of 85.6±0.0 °C. It is classified under GHS with signal word Warning and hazard statements H302 — Harmful if swallowed and H319 — Causes serious eye irritation. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 621-23-8
- Jingsj CID
- J-24913-8
- Molecular Formula
- C9H12O3
- Molecular Weight
- 168.190 g/mol
- Category
- Aromatic Hydrocarbons
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 50-53 °C(lit.) |
|---|---|
| Boiling Point | 257.0±20.0 °C at 760 mmHg |
| Density | 1.0±0.1 g/cm3 |
| Flash Point | 85.6±0.0 °C |
| Exact Mass | 168.078644 |
| PSA | 27.69000 |
| LogP | 1.61 |
| Vapor Pressure | 0.0±0.5 mmHg at 25°C |
| Refractive Index | 1.485 |
| Additional Property | insoluble |
GHS Safety & Compliance
- H302 — Harmful if swallowed
- H319 — Causes serious eye irritation
Activity & Biological Data
| Additional Information | [1]. Wu S, et al. The key role of phloroglucinol O-methyltransferase in the biosynthesis of Rosa chinensis volatile 1,3,5-trimethoxybenzene. Plant Physiol. 2004 May;135(1):95-102. |
|---|
Customs & Trade Information
| HS Code | 2909309090 |
|---|---|
| Summary | 2909309090 other aromatic ethers and their halogenated, sulphonated, nitrated or nitrosated derivatives VAT:17.0% Tax rebate rate:9.0% Supervision conditions:none MFN tariff:5.5% General tariff:30.0% |
Frequently Asked Questions
What is the CAS number of 1,3,5-Trimethoxybenzene?
The CAS number of 1,3,5-Trimethoxybenzene is 621-23-8.
What are the molecular formula and molecular weight of 1,3,5-Trimethoxybenzene?
1,3,5-Trimethoxybenzene has molecular formula C9H12O3 and molecular weight 168.190 g/mol.
Is 1,3,5-Trimethoxybenzene hazardous?
1,3,5-Trimethoxybenzene has GHS signal word Warning and hazard statements H302 — Harmful if swallowed; H319 — Causes serious eye irritation.
What are the upstream and downstream products of 1,3,5-Trimethoxybenzene?
For 1,3,5-Trimethoxybenzene, Upstream Products: 1,3,5-Tribromobenzene, Phloroglucinol, Dimethyl sulfate; Downstream Products: Flavokawain A, Luteolin, 7,4'-Di-O-methylapigenin.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "1,3,5-Trimethoxybenzene (CAS 621-23-8)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-24913-8 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.