magnolia decadienal

Magnolia decadienal, also known by the trivial name 4,8-dimethyl-4,9-decadienal, is a synthetic aldehydic compound employed principally in the fragrance industry. It presents as a clear liquid with the molecular formula C₁₂H₂₀O and a molecular weight of approximately 180.29 g/mol. Organoleptically, it is characterized by a medium-strength floral odor reminiscent of magnolia, lily, and muguet with aldehydic and fresh-citrus accents. Its sensory profile is valued for imparting radiance and elegance in perfumery. Synonyms include Floral Super (IFF) and 4,8-dimethyldeca-4,9-dienal. The material is accessible via synthetic routes and is catalogued with identifiers such as CAS number 71077-31-1. It is documented in controlled-vocabulary databases like PubChem (CID 6437982) where detailed chemical information is available.

Magnolia decadienal is not known to occur naturally in significant biological sources but is synthesized for use in fragrance applications. As a potent fragrance agent, it is widely applied to create aldehydic, floral, green, and herbal notes, often contributing nuances such as lily of the valley and magnolia lily in perfumes. Formulators use this compound to enhance the power and freshness of floral accords, frequently blending it with other aldehydes like geraldehyde and aliphatic aldehydes. The compound is subject to regulation under IFRA (Global), which establishes usage restrictions to ensure safe dermal and systemic exposure levels in consumer products.

Magnolia decadienal exhibits physicochemical properties relevant to its safe handling and performance in formulations. It is a moderately lipophilic aldehyde with an estimated log P of 1.49, indicating intermediate solubility in organic solvents and limited water solubility, approximately 10 mg/L at 25 °C. The substance has a specific gravity between 0.864 and 0.872 at 20 °C, and a refractive index ranging from 1.46 to 1.463 at the same temperature. Its boiling point lies between 260 and 261 °C at standard atmospheric pressure. The vapor pressure is low at 0.012 mmHg at 25 °C, reflecting limited volatility. Magnolia decadienal has a flash point of 66 °C (153 °F), requiring storage in cool, dry, well-sealed containers away from heat and light to maintain stability. Its acid value does not exceed 1 KOH/g. Shelf life is generally 24 months or longer under appropriate conditions.

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Safety information

Hazards identification
Classification of the substance or mixture
GHS Classification in accordance with 29 CFR 1910 (OSHA HCS)
None found.
GHS Label elements, including precautionary statements
Pictogram
Hazard statement(s)
None found.
Precautionary statement(s)
None found.
Oral/Parenteral Toxicity:
Not determined
Dermal Toxicity:
Not determined
Inhalation Toxicity:
Not determined

Safety in use information

Category:
fragrance agents
RIFM Fragrance Material Safety Assessment: Search
IFRA Code of Practice Notification of the 49th Amendment to the IFRA Code of Practice
IFRA Critical Effect:
Dermal sensitization and systemic toxicity
	View the IFRA Standard
View IFRA Standards Library for complete information.
Please review Amendment 49 IFRA documentation for complete information.
IFRA RESTRICTION LIMITS IN THE FINISHED PRODUCT (%):
Category 1: Products applied to the lips
0.042 %
Category 2: Products applied to the axillae
0.013 %
Category 3: Products applied to the face/body using fingertips
0.25 %
Category 4: Products related to fine fragrance
0.24 %
	Category 5: Products applied to the face and body using the hands (palms), primarily leave-on
Category 5A: Body lotion products applied to the body using the hands (palms), primarily leave-on
0.060 %
Category 5B: Face moisturizer products applied to the face using the hands (palms), primarily leave-on
0.060 %
Category 5C: Hand cream products applied to the hands using the hands (palms), primarily leave-on
0.060 %
Category 5D: Baby Creams, baby Oils and baby talc
0.020 %
Category 6: Products with oral and lip exposure
0.14 %
	Category 7: Products applied to the hair with some hand contact
Category 7A: Rinse-off products applied to the hair with some hand contact
0.48 %
Category 7B: Leave-on products applied to the hair with some hand contact
0.48 %
Category 8: Products with significant anogenital exposure
0.020 %
Category 9: Products with body and hand exposure, primarily rinse off
0.46 %
	Category 10: Household care products with mostly hand contact
Category 10A: Household care excluding aerosol products (excluding aerosol/spray products)
0.46 %
Category 10B: Household aerosol/spray products
1.70 %
	Category 11: Products with intended skin contact but minimal transfer of fragrance to skin from inert substrate
Category 11A: Products with intended skin contact but minimal transfer of fragrance to skin from inert substrate without UV exposure
0.020 %
Category 11B: Products with intended skin contact but minimal transfer of fragrance to skin from inert substrate with potential UV exposure
0.020 %
Category 12: Products not intended for direct skin contact, minimal or insignificant transfer to skin
No Restriction
	Notes:
IFRA FLAVOR REQUIREMENTS:
Due to the possible ingestion of small amounts of fragrance ingredients from their use in products in Categories 1 and 6, materials must not only comply with IFRA Standards but must also be recognized as safe as a flavoring ingredient as defined by the IOFI Code of Practice (www.iofi.org). For more details see chapter 1 of the Guidance for the use of IFRA Standards.
Recommendation for magnolia decadienal flavor usage levels up to:
	not for flavor use.

Safety references

EPI System: View

AIDS Citations:Search

Cancer Citations:Search

Toxicology Citations:Search

EPA Substance Registry Services (TSCA):71077-31-1

EPA ACToR:Toxicology Data

EPA Substance Registry Services (SRS):Registry

Laboratory Chemical Safety Summary :6437982

National Institute of Allergy and Infectious Diseases:Data

4,8-dimethyldeca-4,9-dienal

Chemidplus:0071077311