3,4-Diisopropoxy-3-cyclobutene-1,2-dione

Also known as: Diisopropyl squarate, 3,4-Bis(1-methylethoxy)-3-cyclobutene-1,2-dione, 3,4-Diisopropoxycyclobut-3-ene-1,2-dione, 3,4-di(propan-2-yloxy)cyclobut-3-ene-1,2-dione, 3-Cyclobutene-1,2-dione, 3,4-bis(1-methylethoxy)-, Diisopropoxycyclobut-3-ene-1,2-dione

3,4-Diisopropoxy-3-cyclobutene-1,2-dione (CAS 61699-62-5) is a compound in the Ketones category listed in the Jingsj chemical database. It has the molecular formula C10H14O4 and a molecular weight of 198.216 g/mol. Key properties include a melting point of 43-45 °C(lit.), a boiling point of 367.3±0.0 °C at 760 mmHg, a density of 1.1±0.1 g/cm3 and a flash point of 138.2±30.7 °C. It is classified under GHS with signal word Warning and hazard statements H315 — Causes skin irritation, H317 — May cause an allergic skin reaction and H319 — Causes serious eye irritation. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 61699-62-5
Jingsj CID: J-49279-5
Molecular Formula: C₁₀H₁₄O₄
Molecular Weight: 198.216 g/mol
Category: Ketones
Last updated: 8/21/2026

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Physicochemical Properties

Melting Point	43-45 °C(lit.)
Boiling Point	367.3±0.0 °C at 760 mmHg
Density	1.1±0.1 g/cm3
Flash Point	138.2±30.7 °C
Exact Mass	198.089203
PSA	52.60000
LogP	0.54
Vapor Pressure	0.0±0.8 mmHg at 25°C
Refractive Index	1.473

GHS Safety & Compliance

IrritantSignal word: Warning

H315 — Causes skin irritation
H317 — May cause an allergic skin reaction
H319 — Causes serious eye irritation
H335 — May cause respiratory irritation

Frequently Asked Questions

What is the CAS number of 3,4-Diisopropoxy-3-cyclobutene-1,2-dione?

The CAS number of 3,4-Diisopropoxy-3-cyclobutene-1,2-dione is 61699-62-5.

What are the molecular formula and molecular weight of 3,4-Diisopropoxy-3-cyclobutene-1,2-dione?

3,4-Diisopropoxy-3-cyclobutene-1,2-dione has molecular formula C10H14O4 and molecular weight 198.216 g/mol.

Is 3,4-Diisopropoxy-3-cyclobutene-1,2-dione hazardous?

3,4-Diisopropoxy-3-cyclobutene-1,2-dione has GHS signal word Warning and hazard statements H315 — Causes skin irritation; H317 — May cause an allergic skin reaction; H319 — Causes serious eye irritation.

What are the upstream and downstream products of 3,4-Diisopropoxy-3-cyclobutene-1,2-dione?

For 3,4-Diisopropoxy-3-cyclobutene-1,2-dione, Upstream Products: Isopropanol, Squaric acid, Triisopropyl orthoformate; Downstream Products: 3,4-Dimethoxy-3-cyclobutene-1,2-dione.

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. "3,4-Diisopropoxy-3-cyclobutene-1,2-dione (CAS 61699-62-5)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-49279-5 (accessed 2026-11-09).

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