ChemicalBook >?? ???? >5-??-2,3-?????

5-??-2,3-?????

5-??-2,3-????? ??? ???

?? ??:: 13706-86-0

???:: 5-??-2,3-?????

???(??):: 5-??-2,3-?????;5-??-2,3-????

???:: 5-METHYL-2,3-HEXANEDIONE

???(??):: FEMA 3190;ACETYLISOVALERYL;Methylhexanedione;acetylisopentanoyl;Isovaleryl acetate;2-Methylhexa-4,5-dione;5-methyl-3-hexanedione;5-methylhexane-2,3-dione;5-METHYL-2,3-HEXANEDIONE;2,3-Hexanedione, 5-methyl-

CBNumber:: CB2347224

???:: C7H12O2

??? ??:: 128.17

MOL ??:: 13706-86-0.mol

MSDS ??:: SDS

?? ?? 77

5-??-2,3-????? ??

???: 26.25°C (estimate)

?? ?: 138 °C

??: 0,92 g/cm³

???: 1.4148 (589.3 nm 20℃)

FEMA: 3190 | 5-METHYL-2,3-HEXANEDIONE

???: 33°C

??? ??: ??? ??

??: ?? ????? ????

??: ???? ??? ? 1.00%. ???? ???? ??? ??? ??? ??

?? ??: ?? ??

JECFA Number: 414

LogP: 0.06

EPA: 2,3-Hexanedione, 5-methyl- (13706-86-0)

?? ? ?? ??
?? ? ???? ?? (GHS)

?? ???? ??	10
?????	16
????(UN No.)	1224
RTECS ??	MO3200000
TSCA	TSCA listed
HS ??	2914.19.0000
?? ??	3
????	III
???? ??	KE-24222

????(GHS):

?? ?:

Warning

??·?? ??:

??	??·?? ??	?? ??	??	?? ?	?? ??	P- ??
H226	??? ?? ? ??	??? ??	?? 3	??

??????:

P210	?·???·??·????? ????? - ?? ???.
P233	??? ??? ?????. ??? ??? ? ?? ?? ??? ???? ?????.
P240	??? ????? ?? ? ??????.
P280	????/???/???/?????? ?????.
P303+P361+P353	??(?? ????)? ??? ??? ?? ??? ??? ????? ??? ?? ????/?????.
P370+P378	?? ? ?? ?? ?? (Section 5. ??, ??? ????? ??? ???)?(?) ?????.
P403+P235	??? ? ?? ?? ???? ???? ?????.
P501	...? ??? / ??? ?? ???.

NFPA 704

	3
0		0

5-??-2,3-????? C??? ??, ??, ??

??

5-Methyl-2,3-hexanedione has a powerful oily-buttery odor with a sweet taste in aqueous solution. May be synthesized by bromination of mesityl oxide, followed by treatment of the resulting dibromide with sulfuric acid.

??? ??

5-Methyl-2,3-hexanedione has a powerful, oily-buttery odor and a sweet taste in aqueous solution.

??

Reported found in coffee and American potato chips

Safety Profile

A skin irritant. When heated to decomposition it emits acrid smoke and irritating fumes.

Synthesis

5-Methyl-2,3-hexanedione is obtained from the starting material 5-methyl-2-hexyne through an oxidation reaction. The synthetic route is as follows:
synthesis of 5-METHYL-2,3-HEXANEDIONE

5-??-2,3-????? ?? ?? ? ???

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5-??-2,3-????? ?? ??

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???	??	???	??	?? ?	??
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5-??-2,3-????? ?? ??:

1,1,1-??????-5-??-2,4-???? 3,5-DI-TERT-BUTYL-O-BENZOQUINONE DL-CAMPHORQUINONE 5-METHYL-2,3-HEXANEDIONE (1R)-(-)-CAMPHORQUINONE (1S)-(+)-CAMPHORQUINONE 3,5,5-TRIMETHYLCYCLOHEXANE-1,2-DIONE 2,3-HEXANEDIONE Miltrione CAMPHORQUINONE-10-SULFONYLNORLEUCINE CAMPHORQUINONE-10-SULFONIC ACID, HYDRATE 4,7,7-TRIMETHYL-2,3-DIOXOBICYCLO[2.2.1]HEPTANE-1-CARBOXYLIC ACID 5-Methyl-2,4-hexanedione,2-Methyl-3,5-hexanedione 3-TERT-BUTYL-5-METHOXY-1,2-QUINONE 1-(3,3-Dimethyloxiran-2-yl)-6-(3-furyl)-3-methyl-1,6-hexanedione 3-TERT-BUTYLCYCLOBUT-3-ENE-1,2-DIONE IFLAB-BB F1052-0005 AKOS BBS-00001972

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