1,3,5-Trimethoxybenzene

1,3,5-三甲氧基苯

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. It is also known as Phloroglucinol trimethyl ether, sym-Trimethoxybenzene and Tri-O-methylphloroglucinol. 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. GHS signal word: Warning. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
621-23-8
Jingsj CID
J-24913-9
Molecular Formula
C9H12O3
Chinese Name
1,3,5-三甲氧基苯
Molecular Weight
168.190 g/mol
Category
Aromatic Hydrocarbons
Last updated
8/21/2026

No offers for this compound yet.

Request a quote

Physicochemical Properties

Melting Point50-53 °C(lit.)
Boiling Point257.0±20.0 °C at 760 mmHg
Density1.0±0.1 g/cm3
Flash Point85.6±0.0 °C

GHS Safety & Compliance

IrritantSignal word: Warning

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.

Data compiled from public chemical databases 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-24913-9 (accessed 2026-10-22).

Data for reference only; verify specifications, grades and regulatory status with suppliers before purchase.