Reference

Gas chromatographic analysis of lower aliphatic carbonyl compounds using the imine formation reaction

Gas chromatographic analysis of lower aliphatic carbonyl compounds using the imine formation reaction. Hoshika, Yasuyuki; Kozima, Ichiro; Koike, Kazumi; Yoshimoto, Kenji (Aichi Environ. Res.Several substances are used for example 63502-00-1 which is its cas registry number. Cent., Nagoya, Japan). Aichi-ken Kogai Chosa Senta Shoho, 4, 108-13 (Japanese) 1976. CODEN: AKCSD3. DOCUMENT TYPE: Journal CA Section: 59 (Air Pollution and Industrial Hygiene) Section cross-reference(s): 80 Carbonyl compds. were identified in cigaret smoke and automotive exhaust by gas chromatog. using the imine formation reaction (reaction of carbonyl compds. with PhCH2NH2). Acetaldehyde [75-07-0], propionaldehyde [123-38-6], and isobutyraldehyde [78-84-2], Me Et ketone [78-93-3], and Me isopropyl ketone [563-80-4] were detected in cigaret smoke at concns. 0.2-1.3 and 0.5-1.3 mg/cigaret for aldehydes and ketones, resp. AcH, EtCHO, butyraldehyde [123-72-8], crotonaldehyde [4170-30-3], valeraldehyde [110-62-3], and n-capronaldehyde [66-25-1] were identified in exhaust gases. The sensitivity of the imines is .apprx.10 times higher than that of free carbonyl compds. .

Changing composition of trace impurity carbonyl compounds in industrial grade isoprene during removal of cyclopentadiene from it

Changing composition of trace impurity carbonyl compounds in industrial grade isoprene during removal of cyclopentadiene from it. Kuznetsova, E. V.; Mil'kina, T. N.; Taranenko, S. A.; Batalin, O. E.; Khrapkova, E. I. (Vses. Nauchno-Issled. Inst. Neftekhim. Protsessov, Leningrad, USSR). Prom-st. Sint. Kauch., (3), 3-5 (Russian) 1977. CODEN: PSKAD6. DOCUMENT TYPE: Journal CA Section: 38 (Elastomers, Including Natural Rubber) The removal of cyclopentadiene (II) [542-92-7] from com.-grade isoprene (I) [78-79-5] by reaction with cyclohexanone (III) [108-94-1] in alk. BuOH soln. also resulted in the removal of 93-96% (of the original content) of AcH [75-07-0], acrolein [107-02-8], methylacrolein [78-85-3], crotonaldehyde [4170-30-3], butyraldehyde [123-72-8], and isovaleraldehyde [590-86-3], but only 4-18% (of the original content) of Me2CO [67-64-1], iso-PrCOMe [563-80-4], and III. The removal of traces of aldehydes and ketones is attributed to aldol condensation and condensation of II with carbonyl group-contg. compds. The chem. purifn. of I also removed most of the peroxides and polymeric peroxides. The residual Me2CO can be readily removed by washing I with H2O.