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3,5-Dihydroxy-4-methylbenzoic acid hemihydrate

3,5-二羟基-4-甲基苯甲酸半水合物

Also known as: 3,5-dihydroxy-4-methylbenzoic acid, hemihydrate, bis(3,5-dihydroxy-4-methylbenzoic acid) hydrate

3,5-Dihydroxy-4-methylbenzoic acid hemihydrate (CAS 199926-34-6) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C8H10O5 and a molecular weight of 186.16200 g/mol. It is also known as 3,5-dihydroxy-4-methylbenzoic acid, hemihydrate and bis(3,5-dihydroxy-4-methylbenzoic acid) hydrate. Key properties include a melting point of 268-270ºC(lit.), a boiling point of 514.6ºC at 760 mmHg and a flash point of 265ºC. GHS signal word: Warning. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
199926-34-6
Jingsj CID
J-21235-3
Molecular Formula
C8H10O5
Chinese Name
3,5-二羟基-4-甲基苯甲酸半水合物
Molecular Weight
186.16200 g/mol
Category
Organic Acids
Last updated
8/21/2026

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Physicochemical Properties

Melting Point268-270ºC(lit.)
Boiling Point514.6ºC at 760 mmHg
Flash Point265ºC

GHS Safety & Compliance

IrritantSignal word: Warning

Frequently Asked Questions

What is the CAS number of 3,5-Dihydroxy-4-methylbenzoic acid hemihydrate?

The CAS number of 3,5-Dihydroxy-4-methylbenzoic acid hemihydrate is 199926-34-6.

What are the molecular formula and molecular weight of 3,5-Dihydroxy-4-methylbenzoic acid hemihydrate?

3,5-Dihydroxy-4-methylbenzoic acid hemihydrate has molecular formula C8H10O5 and molecular weight 186.16200 g/mol.

Is 3,5-Dihydroxy-4-methylbenzoic acid hemihydrate hazardous?

3,5-Dihydroxy-4-methylbenzoic acid hemihydrate 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. "3,5-Dihydroxy-4-methylbenzoic acid hemihydrate (CAS 199926-34-6)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-21235-3 (accessed 2026-10-23).

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