Methyl Nonyl Ketone
Title: Methyl Nonyl Ketone
CAS Registry Number: 112-12-9
CAS Name: 2-Undecanone
Additional Names: 2-hendecanone
Molecular Formula: C11H22O
Molecular Weight: 170.29
Percent Composition: C 77.58%, H 13.02%, O 9.40%
Line Formula: CH3(CH2)8COCH3
Literature References: Primary constituent of rue oils distilled mainly from Ruta montana L. and R. graveolens. Prepn: E. v. Gorup-Besanez, F. Grimm, Ann. 157, 275 (1871); V. Fiandanese et al., Tetrahedron Lett. 25, 4805 (1984); T. Aoyama, T. Shioiri, Synthesis 1988, 228. LC determn in formulations: R. J. Bushway, J. Assoc. Off. Anal. Chem. 73, 743 (1990). Physical properties: E. Guenther, D. Althausen, The Essential Oils vol. 2 (D. Van Nostrand, New York, 1949) p 377. Brief review: D. L. J. Opdyke, Food Cosmet. Toxicol. 13, 869-870 (1975).
Properties: Oily liquid. Strong odor. mp 12.1°. bp761 231.5-232.5°. bp7 99°. d420 0.8260-0.8263. nD30 1.42527. LD50 dermally in rabbits: >5 g/kg; LD50 orally in rats, mice: >5, 3.88 g/kg (Opdyke).
Melting point: mp 12.1°
Boiling point: bp761 231.5-232.5°; bp7 99°
Index of refraction: nD30 1.42527
Density: d420 0.8260-0.8263
Toxicity data: LD50 dermally in rabbits: >5 g/kg; LD50 orally in rats, mice: >5, 3.88 g/kg (Opdyke)
Use: In the compounding of some synthetic essential oils. As fragrance additive in soaps, detergents, creams, lotions, and perfume. As dog and cat repellant.

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