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Atomfair Butylene carbonate C5H8O3 CAS 4437-85-8

Butylene carbonate (CAS 4437-85-8), also known as 4-ethyl-1,3-dioxolan-2-one, is a high-purity cyclic carbonate ester with the molecular formula C5H8O3. This versatile organic solvent is widely used in electrochemical applications, particularly as a co-solvent in lithium-ion battery electrolytes due to its high dielectric constant and excellent solvating properties. Butylene carbonate exhibits superior thermal and chemical stability, making it ideal for high-performance energy storage systems. Its low viscosity and broad liquid range (-50°C to 240°C) facilitate optimal ionic conductivity in battery formulations. Available in research quantities with ≥99% purity, this product is rigorously tested for water content (<50 ppm) and acidic impurities…

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Description

Butylene carbonate (CAS 4437-85-8), also known as 4-ethyl-1,3-dioxolan-2-one, is a high-purity cyclic carbonate ester with the molecular formula C5H8O3. This versatile organic solvent is widely used in electrochemical applications, particularly as a co-solvent in lithium-ion battery electrolytes due to its high dielectric constant and excellent solvating properties. Butylene carbonate exhibits superior thermal and chemical stability, making it ideal for high-performance energy storage systems. Its low viscosity and broad liquid range (-50°C to 240°C) facilitate optimal ionic conductivity in battery formulations. Available in research quantities with ≥99% purity, this product is rigorously tested for water content (<50 ppm) and acidic impurities to ensure consistent performance in sensitive applications.

Properties

  • CAS Number: 4437-85-8
  • Complexity: 99.8
  • IUPAC Name: 4-ethyl-1,3-dioxolan-2-one
  • InChI: InChI=1S/C5H8O3/c1-2-4-3-7-5(6)8-4/h4H,2-3H2,1H3
  • InChI Key: ZZXUZKXVROWEIF-UHFFFAOYSA-N
  • Exact Mass: 116.047344113
  • Molecular Formula: C5H8O3
  • Molecular Weight: 116.11
  • SMILES: CCC1COC(=O)O1
  • Topological: 35.5
  • Monoisotopic Mass: 116.047344113
  • Physical Description: Liquid
  • Synonyms: 4-Ethyl-1,3-dioxolan-2-one, 4437-85-8, 1,2-Butylene carbonate, Butylene carbonate, 1,3-Dioxolan-2-one, 4-ethyl-, 1,2-Butanediol, cyclic carbonate, Carbonic acid, cyclic ethylethylene ester, BRN 0108553, I64G2S50OV, 2-Oxo-4-ethyl-1,3-dioxolane, DTXSID9040342, JEFFSOL BC, DTXCID7020342, 4-ethyl-1, 3-dioxolan-2-one, JEFFSOL BUTYLENE CARBONATE, ZZXUZKXVROWEIF-UHFFFAOYSA-, 4-19-00-01571 (Beilstein Handbook Reference), CARBONIC ACID, ETHYLETHYLENE ESTER, (+-)-BUTYLENE CARBONATE, BUTYLENE CARBONATE [INCI], BUTYLENE CARBONATE, (+-)-, 403-780-4, 689-389-1, inchi=1/c5h8o3/c1-2-4-3-7-5(6)8-4/h4h,2-3h2,1h3, MFCD00143317, UNII-I64G2S50OV, SCHEMBL74916, SCHEMBL2302495, SCHEMBL10425687, 4-ethyl-[1,3]dioxolan-2-one, (+/-)-BUTYLENE CARBONATE, BCP22035, Tox21_301471, SBB008625, AKOS015838570, BUTYLENE CARBONATE, (+/-)-, FB35399, NCGC00255578-01, AS-58813, SY052601, 1,2-Butylene carbonate;Butylene carbonate, CAS-4437-85-8, DB-080758, B3321, CS-0187002, NS00077894, ST50828331, E77218, Q2683333

Application

Butylene carbonate serves as a key electrolyte solvent in lithium-ion batteries, enhancing ionic conductivity and low-temperature performance. It finds application as a reaction medium in polymer synthesis and organic transformations due to its aprotic nature. The compound is also utilized as a plasticizer in specialty polymers and as a solvent in CO2 capture systems.

Safety and Hazards

GHS Hazard Statements

  • Not Classified
  • Reported as not meeting GHS hazard criteria by 105 of 105 companies. For more detailed information, please visit ECHA C&L website.

Precautionary Statements

  • P264+P265, P280, P305+P351+P338, and P337+P317

Hazard Classes and Categories

  • Eye Irrit. 2 (100%)

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Disclaimer: Sold exclusively for laboratory research. Prohibited for commercial use, diagnostics, or human/animal applications. Buyers assume all compliance liability.

Disclaimer

Intended Use & Restrictions

This product is sold exclusively for laboratory research, analytical testing, or non-commercial purposes.

  • Strictly prohibited: Resale, repackaging, or formulation into commercial products.
  • Not approved for human/animal use, diagnostics, or manufacturing (including pharmaceuticals, agrochemicals, or consumer goods).

Patent & Regulatory Compliance

Certain molecules may be protected by active patents or regulatory restrictions.

  • Buyers must independently verify patent status (e.g., via USPTO/EPO/CNIPA) and comply with local laws.
  • Atomfair LLC does not provide legal assurances regarding patent non-infringement or jurisdictional compliance.

Liability Release

By purchasing, the buyer agrees to:

  • Use this product only as permitted by law.
  • Indemnify Atomfair LLC against all claims arising from misuse, patent infringement, or regulatory violations.

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