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    • Gamma-Butyrolactone (GBL) CAS 96-48-0

    Gamma-Butyrolactone (GBL) CAS 96-48-0

    Gamma-Butyrolactone (GBL), CAS 96-48-0, is also known as 1,4-butyrolactone or 4-butanolide. It is a lactone used as a high-boiling process solvent and reaction medium, and as an intermediate for NMP and 2-pyrrolidone derivatives. State the intended industrial use, required specification, quantity, packaging, destination and document needs in the RFQ.

    • CAS: 96-48-0
    • Synonyms: Gamma-Butyrolactone; 1,4-Butyrolactone; GBL; 4-Butanolide
    • Einecs: 202-509-5
    • Molecular Formula: C₄H₆O₂
    • Grade: Confirm the current product-specific specification.
    • Package: Confirm packaging for the offered material and destination requirements.
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    Product Description

    Gamma-Butyrolactone (GBL) is a lactone identified by CAS 96-48-0. The names 1,4-butyrolactone and 4-butanolide refer to the same substance.

    Alternative names: Gamma-Butyrolactone; 1,4-Butyrolactone; GBL; 4-Butanolide.

    Molecular formula: C₄H₆O₂.

    Molar mass: 86.09 g/mol.

    CAS Number: 96-48-0.

    EINECS: 202-509-5.

    Melting point: confirm the current product-specific value.

    Density: confirm the current product-specific value.

    Physical properties: confirm the current product-specific value.

    Boiling point: confirm the current product-specific value.

    Flash point and handling requirements: confirm the current product-specific value.

    Vapor-pressure requirements: confirm the current product-specific value.

    Process-temperature limits: confirm the current product-specific value.

    Process conditions and equipment compatibility: confirm the current product-specific value.

    Typical industrial context: GBL is used as a process solvent and reaction medium in industrial chemical processing. State intended use and destination requirements in the RFQ.

    FAQ - Technical & Supply Chain

    • Q:

      What is Gamma-Butyrolactone used for?

      A: Gamma-Butyrolactone (GBL), CAS 96-48-0, is used as a high-boiling industrial solvent and reaction medium, and as an intermediate for NMP, 2-pyrrolidone, PVP and other derivatives. It also appears in electronics cleaning, lithium-ion battery electrolyte formulations, and selected pharmaceutical or fine-chemical processes.
    • Q:

      Why is Gamma-Butyrolactone regulated, and how does that affect sourcing?

      A: GBL can be converted to GHB and is controlled or regulated as a drug precursor in several jurisdictions. Confirm the intended industrial end use, import or licensing requirements, approved destination and any end-user documentation before shipment.
    • Q:

      What is Gamma-Butyrolactone used for in pyrrolidone and electronics applications?

      A: GBL is a key raw material for NMP, 2-pyrrolidone and related pyrrolidones. In electronics it is used where strong solvency and high purity are needed, including cleaning formulations and as a lithium-ion battery electrolyte co-solvent.
    • Q:

      Which specification parameters should be compared for Gamma-Butyrolactone?

      A: Compare GC assay, water, Hazen color, acidity or acid value, and peroxide or stabilizer content. Grade and documentation requirements should match the intended solvent, electrolyte, pharmaceutical or polymer process.
    • Q:

      What are typical physical properties of Gamma-Butyrolactone?

      A: Gamma-Butyrolactone is normally a colorless, oily and hygroscopic liquid miscible with water and many organic solvents. Typical values are density about 1.12-1.13 g/mL, melting point about -45 to -43 C, boiling point about 204-206 C, and closed-cup flash point around 98-101 C.

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