Amine is a group of basic organic compounds derived from ammonia (NH 3) by replacement of one (primary amines), two (secondary amines), or three (tertiary amines) hydrogen atoms by alkyl, aryl groups or organic radicals. Most low mole weight aliphatic amines are liquids with characteristic ammonia-like odor.
Secondary Alcohol; Secondary Alkyl Carbocation; Secondary Alkyl Radical; Secondary Allylic Carbocation; Secondary Allylic Radical; Secondary Amide; Secondary Amine; Secondary Amine Group; Secondary Ammonium Ion; Secondary Ammonium Salt; Secondary Benzylic Carbocation; Secondary Benzylic Radical; Secondary Carbon; Secondary Hydrogen ...
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•Secondary amines (DEA, DIPA, BEA) are regulated in Germany (TRGS 611) due to possible formation of nitrosamines •Ammonia formed by biodegradation of certain amines can result in sudden release during tank-side pH adjustment •Some amines (TEA, others) can leach high levels of cobalt
The nomenclature of amines is complicated by the fact that several different nomenclature systems exist, and there is no clear preference for one over the others. Furthermore, the terms primary (1º), secondary (2º) & tertiary (3º) are used to classify amines in a completely different manner than they were used for alcohols or alkyl halides.
In general amine molecules can vary in size up to very long molecules most of which consist of carbon atoms attached to each other and also to hydrogen atoms. In addition to primary amines, there are other classes of amines such as secondary amines, tertiary amines and cyclic amines.
Sec-butylamine is a primary aliphatic amine that is butane in which one hydrogen at position 2 is replaced by an amino group. A fumigant fungicide with a high potential for bioaccumulation, it is not approved for fungicidal use in the European Union.
Of the studied amines, few sterically hindered derivatives of piperazine, a secondary amine monoethylethanolamine, and a tertiary amine n,n-dimethylpropanolamine have high pK a values but lower standard enthalpy than those of the benchmark amine, monoethanolamine (MEA), and thus were deemed promising for CO 2 capture technology.
-secondary amines form an oil/solid suspension which does not dissolve on acidification. -Tertiary amines initally form an insoluble solid or oil, which, on acidification with HCl, dissolves to give a clear solution of the amine salt.
The inhibitor of the present invention comprises a 2-alkyl-4-alkoxyphenol in which the alkyl group substituted in the ring may comprise any suitable alkyl group such as methyl, ethyl, propyl, isopropyl, butyl, isobutyl, secondary butyl. t-butyl, amyl, isoamyl, secondary amyl, etc.
In many cases the discoloration of the amines is undesirable and renders the amines unsatisfactory for the desired use. In a broad aspect the present invention relates to a method of preventing the discoloration of amines which comprises adding thereto a small but effective amount of an inhibitor comprising a 2-alkyl-4-alkoxyphenol. I
iso-, and secondary-butyl alcohols with phenyl isocyanate, the three tolyl isocyanates, and 2,4-tolylene diisocyanate. During the course of these measurements it became apparent that kinetic rate constants could be deduced from the data obtained calori- metrically.
In the case of a propyl group, they are the same. Sec- refers to an alkyl group in which the first carbon of the group is connected to two other carbons. In the case of a butyl group, isobutyl is -CH2-CH(CH3)2 and sec-butyl is -CH(CH3)CH2CH3. Isobutyl and sec-butyl are isomers of one another.
Arkema produces alkylamines, polyamines, asymetrical secondary amines and alkylalcanolamines. They are mainly used in building blocks or acid scavengers for chemical synthesis. Those amines with their various characteristics, are used by many players, especially in pharmaceutical industry and fine chemistry.
Secondary (2°) amines—Secondary amines have two organic substituents (alkyl, aryl or both) bound to the nitrogen together with one hydrogen. Important representatives include dimethylamine, while an example of an aromatic amine would be diphenylamine. Tertiary (3°) amines—In tertiary
Vinyl Ester - or Vinylester - is a resin produced by the esterification of epoxy resin with unsaturated monocarboxylic acid. Vinyl esters have enhanced mechanical properties compared to polyesters with physical strength better impact and thermal shock resistance.
Amine is a group of basic organic compounds derived from ammonia (NH 3) by replacement of one (primary amines), two (secondary amines), or three (tertiary amines) hydrogen atoms by alkyl, aryl groups or organic radicals. Amines, like ammonia, are weak bases because the unshared electron pair of the nitrogen atom can form a coordinate bond with ...
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Primary and secondary amines also form hydrogen bonds, so they have higher boiling points than ethers with similar molecular weights. Nitrogen is not as electronegative as oxygen, however, so the hydrogen bonds between amine molecules are weaker than those between alcohol molecules.
The composition of claims'fi wherein said addition salt is a primary dodecyl amine salt of di-(2-tertiary-butyl-4-secondary butyl-phenyl) phosphate. 9. The composition of claim 6 wherein said addition salt is the cocoamine salt of di-(2,4-ditertiary-butyl-phenyl) phosphate. 10.
In primary amines, one alkyl or aryl group is attached to the nitrogen atom; in secondary amines, two alkyl or aryl groups are attached to the nitrogen atom whereas, in tertiary amines, three alkyl or aryl groups are attached to the nitrogen atom. This is the main difference between primary secondary and tertiary amines. Key Areas Covered. 1.
These designations are not used in the IUPAC nomenclature system for alcohols. Note that there are four butyl alcohols in the table, corresponding to the four butyl groups: the butyl group (CH 3 CH 2 CH 2 CH 2) introduced in Chapter 12 "Organic Chemistry: Alkanes and Halogenated Hydrocarbons", Section 12.5 "IUPAC Nomenclature", and three others:
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tert-Butylamine Revision Date 19-Jan-2018 Eye Contact Rinse immediately with plenty of water, also under the eyelids, for at least 15 minutes. In the case of contact with eyes, rinse immediately with plenty of water and seek medical
Secondary and tertiary amines are selectively prepared in high yields by a one-pot reduction / multiple alkylation procedure from aromatic nitro compounds with styrenes, cyclic olefins or heterofunctionalised olefins, carbon monoxide and hydrogen in the presence of [Rh(cod)Cl] 2 as catalyst.
tert-Butylamine is used as an intermediate in the preparation of the sulfenamides such as N-tert-butyl-2-benzothiazylsulfenamide and N-tert-butyl-2-benzothiazylsulfenimide. As rubber accelerators, these compounds modify the rate of vulcanization of rubber.
Traces of C1-C4 aliphatic amines were derivatized with 7-chloro-4-nitro-2,1,3-benzoxadiazole in alkaline methanol and the resulting amine derivatives were determined by reversed-phase high-performance liquid chromatography with fluorescence detection at 530 nm. /C1-C4 aliphatic amines/
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