β-Lonone

Synonym(s):ß-Ionone;4-(2,6,6-Trimethyl-1-cyclohexenyl)-3-buten-2-one;beta-Ionone

CAS NO.：79-77-6
Empirical Formula: C13H20O
Molecular Weight: 192.3
MDL number: MFCD00001549
EINECS: 201-224-3
SAFETY DATA SHEET (SDS)
Update Date: 2026-08-25 20:17:46

What is β-Lonone?

Chemical properties

Clear Colorless to Pale Yellow Oil

The Uses of β-Lonone

An aroma compound commonly found in essential oils such as rose oil. β-Lonone is an important fragrance chemical used in perfumery. β-Ionone is effective in the chemoprevention of rat mammary carcinogenesis.

The Uses of β-Lonone

It is an important fragrance chemical used in perfumery. The combination of α-ionone and β-ionone is characteristic of the scent of violets and used with other components in flavoring to recreate their scent.

What are the applications of Application

β-Ionone is an aroma compound commonly found in essential oils

Definition

ChEBI: An ionone that is but-3-en-2-one substituted by a 2,6,6-trimethylcyclohex-1-en-1-yl group at position 4.

Synthesis Reference(s)

Synthetic Communications, 17, p. 85, 1987 DOI: 10.1080/00397918708063906
Tetrahedron Letters, 30, p. 645, 1989 DOI: 10.1016/S0040-4039(01)80271-9

Flammability and Explosibility

Non flammable

Purification Methods

Convert β-ionone to the semicarbazone (m 149o) by adding 50g of semicarbazide hydrochloride and 44g of potassium acetate in 150mL of water to a solution of 85g of β-ionone in EtOH.

Properties of β-Lonone

Melting point:	-49°C
Boiling point:	126-128 °C12 mm Hg(lit.)
Density	0.945 g/mL at 25 °C(lit.)
vapor pressure	<1 hPa (25 °C)
FEMA	2595 \| BETA-IONONE
refractive index	n20/D 1.52(lit.)
Flash point:	230 °F
storage temp.	Store below +30°C.
solubility	0.11g/l insoluble
form	Oil
color	Clear Colorless to Light Yellow
Odor	at 10.00 % in dipropylene glycol. dry powdery floral woody orris berry seedy
Water Solubility	Soluble in water (0.11 mg/mI at 20°C).
Merck	14,5056
JECFA Number	389
BRN	1909544
Dielectric constant	12.0（20℃）
Stability:	Light Sensitive
CAS DataBase Reference	79-77-6(CAS DataBase Reference)
NIST Chemistry Reference	3-Buten-2-one, 4-(2,6,6-trimethyl-1-cyclohexen-1-yl)-, (E)-(79-77-6)
EPA Substance Registry System	.beta.-Ionone (79-77-6)

Safety information for β-Lonone

Signal word	Warning
Pictogram(s)	Environment GHS09
GHS Hazard Statements	H411:Hazardous to the aquatic environment, long-term hazard
Precautionary Statement Codes	P273:Avoid release to the environment. P391:Collect spillage. Hazardous to the aquatic environment P501:Dispose of contents/container to..…