(1,3E,5Z,8Z)-Undecatetraene

Overview IFRA Botanical Request a quote

  • Identifiers

    CAS number
    81717-82-0

  • Properties

  • Applications

    (1,3E,5Z,8Z)-Undecatetraene (CAS 81717-82-0) is a nonfunctional C11 polyene with four C=C bonds and defined E/Z geometry, used mainly as a research tool: (i) a reference/standard in GC/GC–MS and UV–Vis to calibrate retention indices, assess geometric isomer separation, and correlate conjugation length with absorption; (ii) a model substrate in photochemistry and reaction‑mechanism studies to probe light/thermal E/Z isomerization, stereoselective hydrogenation, conjugative additions (e.g., hydroboration), allylic oxidation, and site-/geometry‑selective olefin metathesis; (iii) a test system in molecular materials science for energy transfer, deactivation, and charge transport along short polyene chains, and for benchmarking quantum‑chemical methods; (iv) a probe in environmental/oxidation chemistry to monitor autoxidation of unsaturated hydrocarbons and evaluate radical‑scavenger performance; and (v) a structural analogue/reference in chemical ecology when screening, quantifying, and calibrating sensors for multi‑unsaturated insect hydrocarbon pheromones, with this compound used chiefly for reference rather than field deployment; it is light/air sensitive and is typically stored under inert gas at low temperature and prepared as fresh standard solutions.

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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

Botanical

Name CAS Botanical Proportion
Lavender (France) 6 8000-28-0 Lavandula angustifolia Mill., fam. Lamiaceae (Labiatae) 0.01%
Mandarin (Italy) 8 8008-31-9 Citrus deliciosa Tenore (C. reticulata Blanco, cv.mandarin), fam. Rutaceae 0.01%