2-Ethyl-4,5-dimethyloxazole

Overview IFRA Request a quote

  • Identifiers

    CAS number
    53833-30-0

    Molecular formula
    C7H11NO

    SMILES
    CCC1=NC(=C(O1)C)C

    Safety labels

    Flammable
    Flammable

  • Odor profile

    green 79.7%
    nutty 66.81%
    roasted 64.94%
    earthy 61.19%
    vegetable 60.08%
    musty 48.1%
    burnt 46.51%
    meaty 43.49%
    cocoa 39.62%
    hazelnut 39.41%

    Scent© AI

  • Properties

    XLogP3-AA
    2.0 Well soluble in IAA, DEP, MMB

    Molecular weight
    125.17 g/mol

    Vapor pressure est.

    • hPa @ 20°C
    • hPa @ 25°C

    Evaporation rate
    Ultra fast

    Boiling point

    • 60.00 °C. @ 18.00 mm Hg

    Solubility expt.

    • Insoluble in water; Slightly soluble in oils
    • Soluble (in ethanol)

  • Synonyms

    • 2-Ethyl-4,5-dimethyloxazole
    • 53833-30-0
    • 2-Ethyl-4,5-dimethyl-1,3-oxazole
    • Oxazole, 2-ethyl-4,5-dimethyl-
    • 2-Ethyl-4,5-dimethyl oxazole
    • 4,5-Dimethyl-2-ethyloxazole
    • FEMA No. 3672
    • UNII-0W53S23NG4
    • FEMA 3672
    • 0W53S23NG4
    • EINECS 258-815-4
    • 2-Ethyl-4,5-dimethyl-Oxazole
    • DTXSID3068885
    • 2-ETHYL-4,5-DIMETHYLOXAZOLE [FHFI]
    • MFCD00036664
    • SCHEMBL1532490
    • DTXCID5041516
    • CHEBI:177638
    • AKOS015950874
    • 2-Ethyl-4,5-dimethyl-1,3-oxazole #
    • AS-59238
    • CS-0359222
    • NS00022329
    • 2-Ethyl-4,5-dimethyl-1,3-oxazole, AldrichCPR
    • Q27231181
    • 258-815-4
1 4

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