N-DODECYL MERCAPTAN

Nomura (25) investigated the effect of carbon tetrabromide, carbon tetrachloride and long chain mercaptans on the kinetics of emulsion polymerization of styrene. In the case of CBr and CCl the effect on the polymerization was attributed to desorption of the small chain transferred radicals. Similar results were obtained by Napper et al (26). Nomura also observed that the long chain mercaptan (n- dodecyl mercaptan) did not affect the number of particles and the rate, presumably due to the water-insolubility of the chain transferred radicals. 

Mercaptans are oxidised to disulphides by peroxodisulphate. Eager and Winkler studied the kinetics of the oxidations of n-butyl, n-octyl, and n-dodecyl mercaptans in acetic acid/water solvent (80 ml acid-I-20 ml water) and found first-order kinetics with respect to peroxodisulphate. The first-order rate coefficient increases with increase of mercaptan concentration, and reaches a limit at about 5 x 10 Af mercaptan. A decrease in the first-order rate coefficient with increase of the initial peroxodisulphate concentration was observed and attributed to a salt effect. Eager and Winkler suggested a mechanism involving sulphate radical ions. Levitt proposed a mechanism involving sulphur te-troxide, but there is no evidence for its formation in peroxodisulphate oxidations. 

Methyl mercaptan Ethyl mercaptan Propyl mercaptan wo-Propyl mercaptan Butyl mercaptan. wo-Butyl mercaptan j c-Butyl mercaptan ferf-Butyl mercaptan Amyl mercaptan 5 ec-Amyl mercaptan wo-Amyl mercaptan ten-Amy mercaptan n-Hexyl mercaptan n-Heptyl mercaptan n-Octyl mercaptan 5 oc-Octyl mercaptan n-Nonyl mercaptan forf-Nonyl mercaptan n-Decyl mercaptan Undecyl mercaptan n-Dodecyl mercaptan ten-DodocyX mercaptan fn-wo-Butyl mercaptan Phenyl mercaptan Benzyl mercaptan li-Limonene mercaptan Perchloromethyl mercaptan 3-Methyl- 1-butanethiol 2-Mercaptoethanol... 

Sakurai, Ikeda and Okabe [60, 61] studied the effect of load, among other factors, on the thickness of the interaction films generated by the following substances tagged with S elemental sulfur, dibenzyl disulfide, diphenyl disulfide, n-dodecyl mercaptan. The equilibrium thickness of the interaction film generated by rubbing increased with applied load and was also governed by the chemical nature of the additive substance, as is discussed further in Chapter 14,... 

C12H26S n-DODECYL MERCAPTAN -15.335 1.2989E+00 -9.1285E-04 3.6369E-07... 

Pennwatt n-Dodecyl Mercaptan. [Atochem N. Am.] n-Dodecyl mercaptan modifier in polymerization reactions,... 

DODECYL MERCAPTAN or 1-DODECYL MERCAPTAN or N-DODECYL MERCAPTAN (112-55-0) CijHjjS CH3(CH2)iiSH Combustible liquid (flash point 262°F/128°C oc 190°F/88°C Fire Rating 1). Incompatible with oxidizers, bases, strong... 

Synonyms/Tiade Names Dodecyl mercaptan, 1-Dodecyl mercaptan, n-Dodecyl mercaptan, Lauryl mercaptan, n-Lauryl mercaptan, 1-Mercaptododecane ... 

DDM. See n-Dodecyl mercaptan 4,4 -Methylenedianiline Dichlorophene DDOA. See 6-Acetoxy-2,4-dimethyl-m-dioxane DDP. See Didecyl phthalate DDPM. See 4,4 -Methylenedianiline DDPS. See,4,4 -Diaminodiphenyl sulfone DDS. See 4,4 -Dichlorodiphenyl sulfone 4,4 -Diaminodiphenyl sulfone 2-Dodecen-1-ylsuccinic anhydride Dodecenyisuccinic anhydride... 

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