Diethyl 2,5-dihydroxyterephthalate

Also known as: Diethyl 2,5-dihydroxyterephthalate, 2,5-Dihydroxyterephthalic acid diethyl ester, 2,5-Dihydroxy-1,4-benzenedicarboxylic acid diethyl ester, diethyl 2,5-dihydroxybenzene-1,4-dicarboxylate, Terephthalic acid, 2,5-dihydroxy-, diethyl ester, 1,4-Benzenedicarboxylic acid, 2,5-dihydroxy-, diethyl ester, MFCD00055430, EINECS 227-522-3

Diethyl 2,5-dihydroxyterephthalate (CAS 5870-38-2) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C12H14O6 and a molecular weight of 254.236 g/mol. Key properties include a melting point of 135-137ºC(lit.), a boiling point of 408.5±40.0 °C at 760 mmHg, a density of 1.3±0.1 g/cm3 and a flash point of 155.3±20.8 °C. It is classified under GHS with signal word Warning and hazard statements H315 — Causes skin irritation, H319 — Causes serious eye irritation and H335 — May cause respiratory irritation. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 5870-38-2
Jingsj CID: J-855516-6
Molecular Formula: C₁₂H₁₄O₆
Molecular Weight: 254.236 g/mol
Category: Organic Acids
Last updated: 8/21/2026

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Physicochemical Properties

Melting Point	135-137ºC(lit.)
Boiling Point	408.5±40.0 °C at 760 mmHg
Density	1.3±0.1 g/cm3
Flash Point	155.3±20.8 °C
Exact Mass	254.079041
PSA	93.06000
LogP	4.37
Vapor Pressure	0.0±1.0 mmHg at 25°C
Refractive Index	1.557

GHS Safety & Compliance

IrritantSignal word: Warning

H315 — Causes skin irritation
H319 — Causes serious eye irritation
H335 — May cause respiratory irritation

Frequently Asked Questions

What is the CAS number of Diethyl 2,5-dihydroxyterephthalate?

The CAS number of Diethyl 2,5-dihydroxyterephthalate is 5870-38-2.

What are the molecular formula and molecular weight of Diethyl 2,5-dihydroxyterephthalate?

Diethyl 2,5-dihydroxyterephthalate has molecular formula C12H14O6 and molecular weight 254.236 g/mol.

Is Diethyl 2,5-dihydroxyterephthalate hazardous?

Diethyl 2,5-dihydroxyterephthalate has GHS signal word Warning and hazard statements H315 — Causes skin irritation; H319 — Causes serious eye irritation; H335 — May cause respiratory irritation.

What are the upstream and downstream products of Diethyl 2,5-dihydroxyterephthalate?

For Diethyl 2,5-dihydroxyterephthalate, Upstream Products: Ethanol, 2,5-Dihydroxyterephthalic acid, Ethyl 4-chloroacetoacetate; Downstream Products: 2,5-Dimercaptoterephthalic acid, Diethyl succinosuccinate, 2,5-Dihydroxyterephthalic acid.

Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.

Last updated: 8/21/2026

How to cite: Jingsj. "Diethyl 2,5-dihydroxyterephthalate (CAS 5870-38-2)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-855516-6 (accessed 2026-11-09).

Data for reference only; verify product details with suppliers before purchase.