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| | ALPHA-ISO-METHYLIONONE Basic information |
| Product Name: | ALPHA-ISO-METHYLIONONE | | Synonyms: | (3E)-3-Methyl-4-(2,6,6-trimethyl-2-cyclohexen-1-yl)-3-buten-2-one;3-methyl-4-(2,6,6;3-methyl-4-(2,6,6-trimethyl-2-cyclohexen-1-yl)-3-buten-2-on;3-Methyl-4-(2,6,6-trimethylcyclohex-2-en-1-yl);8-Methyl-alpha-ionone;alpha-Ionone, isomethyl-;iso-alpha-methyl ionone;Methyl-alpha-isoionone | | CAS: | 127-51-5 | | MF: | C14H22O | | MW: | 206.32 | | EINECS: | 204-846-3 | | Product Categories: | | | Mol File: | 127-51-5.mol |  |
| | ALPHA-ISO-METHYLIONONE Chemical Properties |
| Boiling point | 121-122℃ (9 Torr) | | density | 0.93 g/mL at 20 °C(lit.) | | vapor pressure | 0.22Pa at 20℃ | | FEMA | 2714 | ALPHA-ISO-METHYLIONONE | | refractive index | 1.50188 (589.3 nm 20℃) | | 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 | | Odor Type | floral | | Water Solubility | 27.953mg/L at 25℃ | | JECFA Number | 404 | | Stability: | Light Sensitive | | LogP | 4.288 at 25℃ | | EPA Substance Registry System | 3-Buten-2-one, 3-methyl-4-(2,6,6-trimethyl-2-cyclohexen-1-yl)- (127-51-5) |
| Hazard Codes | Xi | | Risk Statements | 43 | | Safety Statements | 24/25-36/37 | | RIDADR | UN1230 - class 3 - PG 2 - Methanol, solution | | WGK Germany | 2 | | HS Code | 2914.23.0000 |
| | ALPHA-ISO-METHYLIONONE Usage And Synthesis |
| 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 | Notclassified | | Contact allergens | As a fragrance allergen, a-isomethylionone has to be
mentioned by name in cosmetics within the EU. |
| | ALPHA-ISO-METHYLIONONE Preparation Products And Raw materials |
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