1,4-Butane sultone CAS 1633-83-6

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Product Description:

1,4-Butane sultone is a versatile cyclic sulfonic acid ester, appearing as a colorless to light yellow liquid. It is primarily utilized as an intermediate in organic synthesis, particularly in the pharmaceutical and chemical industries for introducing sulfobutyl groups into molecules. This compound is known for its reactivity and is a key building block in the preparation of various specialty chemicals, including surfactants, sensitizing dyes, and pharmaceutical agents.

1,4-Butane sultone  CAS 1633-83-6

Product Properties:

Property Value

Chemical Name

1,4-Butane sultone

CAS Number

1633-83-6

Molecular Formula

C₄H₈O₃S

Molecular Weight

136.17 g/mol

Appearance

Colorless to light yellow liquid

Boiling Point

138-140 °C at 10 mmHg (approx. 280-284 °C at 760 mmHg)

Melting Point

12.5 – 14.5 °C

Density

1.332 g/cm³ at 20 °C

Solubility

Soluble in many organic solvents; reacts with water

Synonyms

Butane sultone; 1,2-Oxathiane 2,2-dioxide; Butylsultone; Tetrahydro-2H-1,2-oxathiin-2,2-dioxide

Product Usage:

  • Pharmaceutical Intermediate: Used in the synthesis of active pharmaceutical ingredients (APIs). For example, it can be a precursor for certain sulfa drugs or other sulfur-containing medications.

  • Surfactant Production: Employed in manufacturing specialty surfactants and emulsifiers due to the introduction of the sulfobutyl group, which can impart desirable hydrophilic properties.

  • Electroplating Additives: Acts as a brightener or leveling agent in electroplating baths, improving the quality and appearance of plated surfaces.

  • Dye Synthesis: Used in the creation of sensitizing dyes, particularly for photographic materials or other light-sensitive applications.

  • Battery Electrolytes: Investigated as an additive in lithium-ion battery electrolytes to improve performance and stability, particularly by forming a stable solid electrolyte interphase (SEI) on electrodes.

  • Chemical Reagent: Serves as a versatile alkylating agent in organic synthesis to introduce a sulfobutyl (-CH₂CH₂CH₂CH₂SO₃H) moiety.

  • Specialty Chemicals: A building block for various other specialty chemicals requiring a sulfonate group for their function.

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