5-Hexen-2-one

CAS 109-49-9CH3COCH2CH2CH=CH2Chemical Synthesis

5-Hexen-2-one (CAS: 109-49-9) is an unsaturated ketone with the molecular formula C6H10O and a molecular weight of 98.14 g/mol. This clear, colourless to pale yellow liquid serves as a versatile building block in organic synthesis. It is primarily utilised in the chemical industry for the development of various complex organic molecules and fine chemicals, owing to its reactive alkene and carbonyl functionalities.

IUPAC: Allylacetone
Synonyms: Allylacetone

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5-Hexen-2-one (CH3COCH2CH2CH=CH2) — chemical structure, CAS 109-49-9; Chemistry, fine chemical supplied by Tech Serve Solutions

Building BlocksC3 to C6Carbonyl CompoundsChemical SynthesisKetones

01 /Applications

Organic Synthesis Intermediate

5-Hexen-2-one is a key intermediate in the synthesis of more complex organic compounds. Its dual functionality (ketone and alkene) allows for diverse chemical transformations.

Fine Chemical Manufacturing

Used in the production of fine chemicals, this compound contributes to the creation of specialized molecules for various industrial applications.

Research and Development

Employed in laboratory settings for research purposes, exploring novel synthetic pathways and developing new chemical entities.

02 /Properties

Molecular weight	98.14
Linear formula	CH3COCH2CH2CH=CH2
Assay	99%
Boiling point	128-129 °C(lit.)
Density	0.847 g/mL at 25 °C(lit.)
Refractive index	n20/D 1.419(lit.)

03 /Safety & handling

GHS hazard pictogram: Flammable (GHS02) — Flammable

Warning

Hazard statements

H226Flammable liquid and vapour

Protective equipment	Eyeshields, Faceshields, full-face respirator (US), Gloves, multi-purpose combination respirator cartridge (US), type ABEK (EN14387) respirator filter
Flash point	24 °C / 75.2 °F
Transport (UN / ADR)	UN 1224C 3 / PGIII
Water hazard class (WGK, DE)	3
Risk statements (R)	10

Hazard information is provided for guidance. Always consult the product Safety Data Sheet (SDS), available on request, before handling.

04 /Identifiers & registry

CAS number

109-49-9

MDL number

MFCD00008793

PubChem substance

24895450

Beilstein registry

1699137

05 /Quality & supply

Documentation

Every batch ships with a Certificate of Analysis covering assay, identity and purity; the grade is confirmed against your enquiry. Safety Data Sheets and technical data sheets are available on request.

Supply & logistics

Samples for technical evaluation; bulk MOQ by grade and packaging. In-stock material ships in 7–10 working days, worldwide, with full export documentation.

06 /Frequently asked questions

What is 5-Hexen-2-one used for?

5-Hexen-2-one is primarily used as a versatile building block in organic synthesis for the development of fine chemicals and complex organic molecules in research and industrial settings.

What are the CAS number and formula for 5-Hexen-2-one?

The CAS number for 5-Hexen-2-one is 109-49-9, and its linear formula is CH3COCH2CH2CH=CH2.

What grade and purity does Tech Serve Solutions supply for 5-Hexen-2-one?

Tech Serve Solutions supplies 5-Hexen-2-one with an assay of 99%. We do not represent this product as USP, BP, or EP grade.

How should 5-Hexen-2-one be handled safely?

5-Hexen-2-one is a flammable liquid and vapour (H226). Handle with appropriate personal protective equipment, including eyeshields, gloves, and respiratory protection, in a well-ventilated area. Keep away from heat, hot surfaces, sparks, open flames, and other ignition sources.

Is 5-Hexen-2-one a controlled substance?

Based on the provided data, 5-Hexen-2-one is not listed as a controlled substance.

How is 5-Hexen-2-one packed, shipped, and exported?

5-Hexen-2-one is shipped according to relevant transport regulations (UN 1224C 3 / PGIII). Specific packaging details are available upon request for export.

How can I request a quote or sample of 5-Hexen-2-one?

To request a quote or sample, please contact the Tech Serve Solutions sales team through our website or by phone, referencing the product name and CAS number (109-49-9).