5-methyl-2-hexanone

Structural formula
General
Surname	5-methyl-2-hexanone
other names	5-methylhexan-2-one MIAK Isopentyl methyl ketone Methyl isoamyl ketone
Molecular formula	C 7 H 14 O
Brief description	colorless liquid with a pleasant odor
External identifiers / databases
CAS number 110-12-3 EC number 203-737-8 ECHA InfoCard 100.003.399 PubChem 8034 Wikidata Q2152381
properties
Molar mass	114.19 g mol −1
Physical state	liquid
density	0.89 g cm −3
Melting point	−74 ° C
boiling point	144 ° C
Vapor pressure	6.43 hPa (20 ° C)
solubility	sparingly soluble in water (approx. 3.1 g l −1 at 25 ° C)
Refractive index	1.4075 (20 ° C)
safety instructions
GHS hazard labeling from  Regulation (EC) No. 1272/2008 (CLP) , expanded if necessary Caution H and P phrases H: 226-332 P: 210-304 + 340
Toxicological data	3200 mg kg −1 ( LD 50 ,  rat ,  oral ) 8140 mg kg −1 ( LD 50 ,  rabbit ,  transdermal )
As far as possible and customary, SI units are used. Unless otherwise noted, the data given apply to standard conditions . Refractive index: Na-D line , 20 ° C

5-methyl-2-hexanone is a chemical compound from the ketone group .

Occurrence

5-Methyl-2-hexanone was found in traces of the volatile substances in papaya (Carica papaya), black tea and cooked meat.

Extraction and presentation

5-methyl-2-hexanone can be obtained by oxidation of 5-methyl-2-hexanol or by condensation of acetone with isobutyraldehyde .

properties

5-methyl-2-hexanone is a colorless liquid with a pleasant odor that is sparingly soluble in water.

use

5-methyl-2-hexanone is used as an industrial intermediate in the production of rubber antioxidants, pharmaceuticals, agrochemicals, paints and varnishes, and as a solvent .

safety instructions

The vapors of 5-methyl-2-hexanone can form an explosive mixture with air ( flash point 35 ° C, ignition temperature 455 ° C).

Individual evidence

1. ↑ ^{a b c d e f g h i j k l m} Entry on 5-methyl-2-hexanone in the GESTIS substance database of the IFA , accessed on December 3, 2018(JavaScript required) .
2. ↑ ^{a b} Data sheet 5-Methyl-2-hexanone, 99% from AlfaAesar, accessed on December 3, 2018 ( PDF )(JavaScript required) .
3. ↑ Entry on 5-methylhexan-2-one in the Classification and Labeling Inventory of the European Chemicals Agency (ECHA), accessed on December 3, 2018. Manufacturers or distributors can expand the harmonized classification and labeling .
4. ↑ Jorge A. Pino, Karina Almora, Rolando Marbot: Volatile components of papaya (Carica papaya L., Maradol variety) fruit. In: Flavor and Fragrance Journal. 18, 2003, p. 492, doi : 10.1002 / ffj.1248 .
5. ↑ Peter Schreier, Mathias Lehr a. a .: About the aroma of the papaya fruit (Carica papaya, L.): Indications of precursors of volatile terpene compounds. In: Journal of Food Study and Research. 180, 1985, p. 297, doi : 10.1007 / BF01851273 .
6. ↑ Shmuel Yannai: Dictionary of Food Compounds with CD-ROM, Second Edition . CRC Press, 2012, ISBN 978-1-4200-8351-4 , pp. 1305 ( limited preview in Google Book search).
7. ↑ ^{a b} Entry on 5-methyl-2-hexanone in the Hazardous Substances Data Bank , accessed on December 3, 2018.