Lauryl aldehyde

Solid KC104 oxidizes lauryl aldehyde to lauric acid by a second-order rate process [eqn. (16)] under the influence of ultrasonic irradiation... 

The oxidation of lauryl aldehyde gives lauric acid in 53.4% yield. This reaction is not exothermic and is much slower than that of the corresponding alcohol. Neopentyl glycol oxidizes to a low molecular weight polyester in 21% yield. 

Our observations are summarized as follows (1) no induction period, (2) fast alcohol oxidation in an oxygen-poor liquid phase, (3) no carboxylic acids from the higher alcohols, (4) slow oxidation of lauryl aldehyde to lauric acid in the presence of water, and (5) recovery of bromine in the organic phase on reaction completion. These data show that the reaction is not a radical chain process but rather a bromine oxidation in which the halogen is continuously regenerated, as shown in Reactions 1 through 7. 

SYNS C-12 ALDEHYDE, LAURIC 1-DODECYL ALDEHYDE DUODECYLIC ALDEHYDE FEMA No. 2615 LAURYL ALDEHYDE (FCC)... 

A comparison between a HAS and a PAO as stabilizers against the oxidation of PP showed that they behave differently [4]. Based on experiment showing the ability of the HAS and the PAO to reduce the oxidation rate of decalin, squalane and decalin/lauryl aldehyde mixtures, it is shown that the HAS is mainly active in the presence of aldehydes. For unstabilized PP it is shown that aldehydes play an important role in its oxidation [5]. These results are used to propose an oxidation mechanism for PP and a mechanism underlying the action of HAS. 

Oxidation of Decalin, Squalane and a Mixture of Lauryl aldehyde and Decalin [4]... 

The influence of the stabilizers mentioned in Figure 1 was studied by oxidizing three different model compounds decalin (a cyclic hydrocarbon which, like PP, contains secondary and tertiary carbons), squalane (a high molecular weight aliphatic hydrocarbon which also contains secondary and tertiary carbons), a mixture of 10% lauryl aldehyde in decalin, which could serve as a model for partly oxidized PP. All reactions were initiated with 1% of t-bulylhydroperoxide and performed at 120°C (for details see ref. 4). 

Figure 7. Influence of 0.1 wt. % stabilizer on the oxidation rate of a decalin/lauryl aldehyde mixture at 120°C. HAS-1 ( ) andPAO-1 (o). Bars show the standard deviation.

See MIPA-laureth sulfate Lauryl aldehyde. See Laurie aldehyde Lauryl amide. See Lauramide Lauryl amine n-Laurylamine. SeeLauramine Laurylamine dipropylenediamine CAS 2372-82-9 EINECS/ELINCS 219-145-8 Synonyms N-(3-Aminopropyl)-N-dodecylpropane-1,3-diamine N,N-Bis (3-aminopropyl) dodecylamine Dodecylamine, N,N-bis (3-aminopropyl)- Dodecyl dipropylene triamine 1,3-Propanediamine, N-(3-aminopropyl)-N-dodecyl Classification Organic compd. 

Figure 3 Lauryl aldehyde identified as off-odor in SLES by SPME/GC/MS.

---