R-11
Title: R-11
CAS Registry Number: 126-15-8
CAS Name: 1,5a,6,9,9a,9b-Hexahydro-4a(4H)-dibenzofurancarboxaldehyde
Additional Names: 2,3,4,5-bis(2-butenylene)tetrahydrofurfural
Manufacturers' Codes: MGK-11
Trademarks: MGK Repellent 11 (McLaughlin)
Molecular Formula: C13H16O2
Molecular Weight: 204.26
Percent Composition: C 76.44%, H 7.90%, O 15.67%
Literature References: Prepd by heating furfuraldehyde with butadiene and water under pressure: Hillyer, Nicewander, US 2683151 (1954 to Phillips Petroleum). Clinical efficacy vs sand flies: F. P. Fossati, M. Maroli, Trans. R. Soc. Trop. Med. Hyg. 80, 771 (1986).
Properties: Liquid, bp 307°. d420 1.10. mp -80°. nD20 1.5254. Practically insol in water.
Melting point: mp -80°
Boiling point: bp 307°
Index of refraction: nD20 1.5254
Density: d420 1.10
 
Derivative Type: Oxime
Properties: mp 97.2°.
Melting point: mp 97.2°
 
Derivative Type: Dinitrophenylhydrazone
Properties: mp 152.8°.
Melting point: mp 152.8°
 
Use: Insect repellent.

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