ALPHA-ISO-METHYLIONONE
Synonym(s):α-Cetone;3-Methyl-4-(2,6,6-trimethyl-2-cyclohexen-1-yl)-3-buten-2-one;Isomethyl-α-ionone
- CAS NO.:127-51-5
- Empirical Formula: C14H22O
- Molecular Weight: 206.32
- MDL number: MFCD00034582
- EINECS: 204-846-3
- SAFETY DATA SHEET (SDS)
- Update Date: 2024-07-29 17:07:33
What is ALPHA-ISO-METHYLIONONE?
Description
α-Isomethylionone has a fine violet and orris-like odor. This substance may be synthesized by condensation of citral with methyl ethyl ketone controlling the ratio between the n- and iso-forms; the methyl pseudo-ionone obtained is then subjected to ring closure, using strong alkali and high temperature (thus favoring the formation of the normal α- and β-methylionones) or with quaternary ammonium base (thus favoring the formation of wo-forms); See also monographs of α- and β-ionone and methyl α-, β-, and γ-ionones.
Chemical properties
α-Isomethylionone has a fine violet and orris-like odor.
Preparation
By condensation of citral with methyl ethyl ketone controlling the ratio between the n- and iso-forms; the methyl pseudoionone obtained is then subjected to ring closure, using strong alkali and high temperature (thus favoring the formation of iso-forms); See also monographs of α-, β-, and γ-ionones.
Definition
ChEBI: 3-Methyl-4-(2,6,6-trimethyl-2-cyclohexen-1-yl)-3-buten-2-one is a sesquiterpenoid.
Flammability and Explosibility
Not classified
Contact allergens
As a fragrance allergen, a-isomethylionone has to be mentioned by name in cosmetics within the EU.
Properties of ALPHA-ISO-METHYLIONONE
Boiling point: | 121-122℃ (9 Torr) |
Density | 0.93 g/mL at 20 °C(lit.) |
vapor pressure | 0.22Pa at 20℃ |
refractive index | 1.50188 (589.3 nm 20℃) |
FEMA | 2714 | ALPHA-ISO-METHYLIONONE |
storage temp. | Sealed in dry,Room Temperature |
solubility | Chloroform (Slightly), DMSO (Slightly), Methanol (Slightly) |
form | liquid |
color | Light orange to Yellow to Green |
Odor | at 10.00 % in dipropylene glycol. woody violet floral |
Water Solubility | 27.953mg/L at 25℃ |
JECFA Number | 404 |
Stability: | Light Sensitive |
EPA Substance Registry System | 3-Buten-2-one, 3-methyl-4-(2,6,6-trimethyl-2-cyclohexen-1-yl)- (127-51-5) |
Safety information for ALPHA-ISO-METHYLIONONE
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..… |
Computed Descriptors for ALPHA-ISO-METHYLIONONE
Abamectin manufacturer
HJ AROCHEM
Moraya GlobaL Private Limited
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