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2-Methoxyphenoxyacetic acid

2-甲氧基苯氧乙酸

Also known as: (2-Methoxyphenoxy)acetic acid, Guaiacoxyacetic acid, (o-Methoxyphenoxy)acetic acid, 2-(2-Methoxyphenoxy)acetic acid, Acetic acid, (2-methoxyphenoxy)-, Acetic acid, (o-methoxyphenoxy)-

2-Methoxyphenoxyacetic acid (CAS 1878-85-9) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C9H10O4 and a molecular weight of 182.173 g/mol. It is also known as (2-Methoxyphenoxy)acetic acid, Guaiacoxyacetic acid and (o-Methoxyphenoxy)acetic acid. Key properties include a melting point of 123-126 °C(lit.), a boiling point of 303.0±17.0 °C at 760 mmHg, a density of 1.2±0.1 g/cm3 and a flash point of 120.9±14.4 °C. GHS signal word: Warning. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
1878-85-9
Jingsj CID
J-990906-3
Molecular Formula
C9H10O4
Chinese Name
2-甲氧基苯氧乙酸
Molecular Weight
182.173 g/mol
Category
Organic Acids
Last updated
8/21/2026

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Physicochemical Properties

Melting Point123-126 °C(lit.)
Boiling Point303.0±17.0 °C at 760 mmHg
Density1.2±0.1 g/cm3
Flash Point120.9±14.4 °C

GHS Safety & Compliance

IrritantSignal word: Warning

Frequently Asked Questions

What is the CAS number of 2-Methoxyphenoxyacetic acid?

The CAS number of 2-Methoxyphenoxyacetic acid is 1878-85-9.

What are the molecular formula and molecular weight of 2-Methoxyphenoxyacetic acid?

2-Methoxyphenoxyacetic acid has molecular formula C9H10O4 and molecular weight 182.173 g/mol.

Is 2-Methoxyphenoxyacetic acid hazardous?

2-Methoxyphenoxyacetic acid 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. "2-Methoxyphenoxyacetic acid (CAS 1878-85-9)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-990906-3 (accessed 2026-10-22).

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