Heptanal
Title: Heptanal
CAS Registry Number: 111-71-7
Additional Names: Heptaldehyde; Aldehyde C-7; heptylaldehyde; oenanthal; enanthal; oenanthol; oenanthaldehyde; enanthaldehyde
Molecular Formula: C7H14O
Molecular Weight: 114.19
Percent Composition: C 73.63%, H 12.36%, O 14.01%
Line Formula: CH3(CH2)5CHO
Literature References: Obtained by distilling castor oil under reduced pressure: Rogers, J. Am. Pharm. Assoc. Sci. Ed. 12, 503 (1923); Dominguez et al., J. Chem. Educ. 29, 446 (1952). Catalytic dehydration of ricinoleic acid methyl ester yields heptanal as a cleavage product in almost quantitative yield: Panjutin, Chem. Zentralbl. 1928, II, 747.
Properties: Liquid. Penetrating fruity odor. d40 0.83423; d415 0.82162; d430 0.80902. mp -43.3°. bp760 152.8°; bp30 59.6°; bp10 42.5°. nD20 1.42571. Viscosity at 15°: 0.977 cP; at 30°: 0. 791 cP. Surface tension (g) at 30° = 25.68. Surface tension against water at 30°: 14.41. Heat of combustion (liq) -1062.4 kcal/mol. Slightly sol in water. Misc with alc, ether. Sol in 3 vols of 60% alc.
Melting point: mp -43.3°
Boiling point: bp760 152.8°; bp30 59.6°; bp10 42.5°
Index of refraction: nD20 1.42571
Density: d40 0.83423; d415 0.82162; d430 0.80902
Use: Manufacture of 1-heptanol; ethyl oenanthate.

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