violet nitrile

Violet nitrile is an organic nitrile compound identified chemically as (2E,6Z)-nona-2,6-dienenitrile with the molecular formula C₉H₁₃N. It appears as a colorless liquid with a distinctive green floral aroma, highlighted by violet and subtle walnut notes. Known by synonyms such as vionil (Bedoukian) and nona-2,6-diene nitrile, this compound is primarily used as a fragrance agent. Violet nitrile can be sourced synthetically and is linked within the controlled-vocabulary chemical database PubChem, reflecting its well-defined chemical identity and applications in perfumery and related industries.

Violet nitrile is not broadly found in natural biological systems but is utilized primarily for its fragrance attributes. It contributes prominent green, floral, violet, melon, and walnut-like odor notes, making it valuable in creating complex scent profiles where aldehydes might be unsuitable. The compound is regulated under standards such as IFRA (Global), which recommends usage levels up to 0.1% in fragrance concentrates. Violet nitrile’s unique odor profile supports its application in perfumes and scented products to impart fresh green floral accents.

The physical and chemical characteristics of violet nitrile affect its behavior in fragrance formulations. It has a boiling point range of 231 to 232°C at normal atmospheric pressure and a relatively low vapor pressure of 0.062 mmHg at 25°C, indicating moderate volatility. Its estimated log P (octanol-water partition coefficient) is approximately 2.8, suggesting balanced lipophilicity suitable for integration in both oil and alcohol-based formulations. Violet nitrile is soluble in alcohol and shows slight solubility in water, estimated at 171 mg/L at 25°C. Its flash point is measured at 200°F (about 93°C), denoting moderate flammability risk. These attributes contribute to its stability, longevity, and substantivity in olfactory applications.

(IUPAC):	Atomic Weights of the Elements 2011 (pdf)
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(IUPAC):	Periodic Table of the Elements
HMDB (The Human Metabolome Database):	Search
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Safety information

Preferred SDS: View
European information :
Most important hazard(s):
Xi - Irritant
R 36/37/38 - Irritating to eyes, respiratory system, and skin. S 26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S 36 - Wear suitable protective clothing.
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
Recommendation for violet nitrile usage levels up to:
	0.1000 % in the fragrance concentrate.
Recommendation for violet nitrile 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):97752-28-8

EPA ACToR:Toxicology Data

EPA Substance Registry Services (SRS):Registry

Laboratory Chemical Safety Summary :6437774

National Institute of Allergy and Infectious Diseases:Data

(2E,6Z)-nona-2,6-dienenitrile

Chemidplus:0097752288

(2Z,6E)-nona-2,6-dienenitrile

Chemidplus:0067019890