Methylionone
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Methylionone
structure -
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CAS No:
1335-46-2
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Formula:
C14H22O
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Chemical Name:
Methylionone
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Synonyms:
Ionone,methyl-;Methylionone;6-Methylionone
- Categories:
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CAS No:
Characteristics
17.1
4.39
1-(2,6,6-trimethyl-2-cyclohexen-1-yl)-1-penten-3-one is a clear, colorless to yellow liquid with a woody, violet odor. (NTP, 1992)
0.93 at 77° F (NTP, 1992)
125-128 °C @ Press: 8 Torr
greater than 200° F (NTP, 1992)
1.6324 (estimate)
less than 1 mg/mL at 68° F (NTP, 1992)
0.00286mmHg at 25°C
greater than 1 (NTP, 1992) (Relative to Air)
Both the acute oral LD 50 in rats and the acute dermal LD 50 in rabbits exceeded 5 g/kg (Moreno, 1973).
Safety Information
P264, P273, P280, P302+P352, P305+P351+P338, P321, P332+P313, P337+P313, P362, P391, P501
H315
Methylionone Use and Manufacturing
Made from dimethyl butadiene and isoprene. Hydrochlorination of dimethylbutadiene produces dimethylbutadiene hydroxide, and then telomerization reaction with isoprene to obtain methylgeranyl chloride. Methylgeranyl chloride reacts with urotropine to obtain 6-methylcitral, and then condenses pseudo-iris ketone with acetone in an alkaline medium, and then cyclizes to obtain iris-ketone. Methyl ionone is synthesized by a method similar to ionone, which is obtained by condensing citral or a mixture containing citral with methyl ethyl ketone to produce pseudoisomethyl ionone, which is then cyclized and isomerized simultaneously.
Perfumery, flavoring.
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