3-Hexen-2-one

Overview IFRA Request a quote

  • Identifiers

    CAS number
    763-93-9

    Molecular formula
    C6H10O

    SMILES
    CC/C=C/C(=O)C

    Safety labels

  • Properties

    XLogP3-AA
    1.2

    Molecular weight
    98.14 g/mol

  • Synonyms

    • (E)-hex-3-en-2-one
    • 3-HEXEN-2-ONE
    • 1-Butenyl methyl ketone
    • 763-93-9
    • Methyl 1-butenyl ketone
    • 3-hexene-2-one
    • 3-hexen-2-on
    • hex-3-en-5-one
    • Hex-3-en-2-on
    • methyl-alpha-butenyl-ketone
    • CHEBI:141566
    • DTXSID801015852
    • 1Butenyl methyl ketone
    • RefChem:502166
    • DTXCID60910994
    • hex-3-en-2-one
    • 4376-23-2
    • (3E)-3-Hexen-2-one
    • 3-hexen-2-one(E)
    • (E)-3-hexen-2-one
    • (3e)-3-hexene-2-one
    • (3E)-hex-3-en-2-one
    • 3E-Hexene-2-one
    • 215457-81-1
    • trans-hexen-2-al
    • trans-3-hexen-2-one
    • trans-hex-3-en-2-one
    • 5A3B3N6UGZ
    • SCHEMBL319621
    • 3-Hexen-2-one, (3E)-
    • SCHEMBL22639089
    • LMFA12000019
    • AKOS015915359
    • (3E)-3-Hexen-2-one (>90%)
    • F73085
    • EN300-1828247
    • 4376-23-2

  • Applications

    3-Hexen-2-one (CAS 763-93-9) is an α,β-unsaturated ketone that is primarily used as a fragrance ingredient, contributing a green, fresh note in perfumery and broader personal care formulations. It is commonly evaluated as an aroma compound for cosmetics and household products (such as air fresheners and cleaners) and may serve as a reactive building block or intermediate in fragrance chemistry and organic synthesis for industrial manufacturing. In coatings and inks, it can be utilized as an odorant additive or a component related to fragrance release. Its use is subject to local regulations and formulation limits.

    gpt-5-nano

1 3

IFRA standard 51

Recommendation
No restriction
Maximum acceptable concentrations in the finished product (%)
Category 1
Products applied to the lips
 No restriction Category 7A
Rinse-off products applied to the hair with some hand contact
 No restriction
Category 2
Products applied to the axillae
 No restriction Category 7B
Leave-on products applied to the hair with some hand contact
 No restriction
Category 3
Products applied to the face/body using fingertips
 No restriction Category 8
Products with significant anogenital exposure
 No restriction
Category 4
Products related to fine fragrance
 No restriction Category 9
Products with body and hand exposure, primarily rinse off
 No restriction
Category 5A
Body lotion products applied to the body using the hands (palms), primarily leave on
 No restriction Category 10A
Household care products with mostly hand contact
 No restriction
Category 5B
Face moisturizer products applied to the face using the hands (palms), primarily leave on
 No restriction Category 10B
Household care products with mostly hand contact, including aerosol/spray products (with potential leave-on skin contact)
 No restriction
Category 5C
Hand cream products applied to the hands using the hands (palms), primarily leave on
 No restriction Category 11A
Products with intended skin contact but minimal transfer of fragrance to skin from inert substrate without UV exposure
 No restriction
Category 5D
Baby Creams, baby Oils and baby talc
 No restriction Category 11B
Products with intended skin contact but minimal transfer of fragrance to skin from inert substrate with potential UV exposure
 No restriction
Category 6
Products with oral and lip exposure
 No restriction Category 12
Products not intended for direct skin contact, minimal or insignificant transfer to skin
 No restriction