Amine properties

In the previous analysis for the second quadrant amines, there was evidence that the presence of an aromatic ring (BzAM) increased competition with the deactivating intermediate(s) and significantly the amount of DHQ obtained. The study was thus extended to other aromatic amines aniline (AN), 2-ethylaniline (2-ETAN), 3-ethylaniline (3-ETAN) and N-ethylaniline (N-ETAN). These amines are not classified in the literature analysis of amine properties (16), although aniline and pyridine were studied by statistical analysis of their solvent properties and classified in the same sector (16). By analogy, we hypothesize that these model aromatic amines should be classified in the second sector. Thus, they may aid in an understanding of the specific role of the aromatic ring and the effect of an alkyl substituent. 

Piperazine (539 Z=NH) and morpholine (539 Z = 0) show typical aliphatic secondary amine properties, but their pKa values, 9.8 and 8.4, respectively (cf. piperidine pKa 11.2), reflect the inductive effect of the second heteroatom. 

By contrast, Kon (54MI3) deduced from LCAO MO calculations that these anomalous amine properties are not due to tautomerism and that aminodiazaazulenes indeed exist. In any case, pyrazole 578 (Scheme 154) seems to have the amine structure [83H(20)9]. As regards dimethylamino-azaazulenes, the contribution of mesomeric zwitterionic forms like 579 is assumed (68BCJ2102 77BCJ1184). 

Removal of carbon dioxide (natural gas sweetening) increases the calorific value and transportability of the natural gas stream. Carbon dioxide content in the natural gas obtained from the gas or oil well can vary from 4% to 50%. It has to be reduced down to ca. 2%-5%. This goal is typically achieved by means of absorption with an aqueous alkanolamine solution that has as main drawback the tendency to corrode equipment and to lose amine properties by... 

Chem. Descrip. Fatty acid modified poiymer in water Uses Dispersant for VOC-free pigmenfs, grinding vehicie in water- and soiv,-borne decorative paints Features Seif-emuisifying free of soivs. and amines Properties 6 max. coior dens. 1.06-1.09 g/cm (20 C) 74-76% act. Storage Store in a cooi, dry piace protected against frost 5 yr max. sheif iife when kept in the originai, unopened container EFKA -2018 [EFKA Additives BV]... 

Features Formulations meet some FDA regs. fast air dry good corrosion resist. adhesion to a variety of substrates can be formulated into water-sol. coatings when neutralized with the proper amines Properties Gardner 7 max. color sp.gr. 0.99 dens. 8.3 Ib/gal vise. 49,000 cps acid no. 60 (solids) 70 01% solids Epotuf 92-828 [Reichhold]... 

Trade Name Synonyms Norfox IM-38 [Norman, Fox http //www.norfoxx.com] N-Oleyl-1,1 -iminobis-2-propanol CAS 65086-71-7 Synonyms PPG-2 oleamine Classification Propoxylated amine Properties Clear liq. 

Classification Aliphatic fatty amine Properties Cationic... 

Introduction to Amines Nomenclature of Amines Properties of Amines Preparation of Amines A Review... 

TIN. INORGANIC COMPOUNDS EXCEPT OXIDES (AS SN) n Synmiyms vary depending upon specific compound Chlorine, turpentine for sunnk chloride water, akohob, amines Properties vary depending upon spedfk compound ... 

An unusual formation of furans 155 (together with the corresponding pyrroles 156) was observed when compound 154 was treated with two equivalents of primary amine. Ratio of products depends on amine properties. Thus, if the amine acts as a base, the reaction proceeds via the intermediate enolate and an intramolecular Michael addition/fluoride elimination sequence. Further nucleophilic displacement of the ethylsulfanyl group gives 3-carboxamide furans 155. If the amine acts as a nucleophile, a Michael addition/elimination followed by an intramolecular condensation leads to the corresponding pyrrole 156 via the enaminone [112, 113]. 

Uses Conosion inhibitor emulsifier flotation rxrllecfor additive for feels, lubricants, and petrol, refining intermediate for textile foaming agents, surfactants, ethoxylates, agric. chems. crosslinking agent for epoxy resins Fedures Replacement for oleyl and soya amines Properties Colorless to It. amber liq. sol. 0.57 g/100 g in water m.w. 265 sp.gr. 

Uses Film-former for corrosion inhibitor formulations, boiler-condensate corrosion control drilling fluid additive neutralizing amine Properties Dk. amber liq. sol. in water and brine 100% cone. 

Features Very low foaming may be neutralized with amines Properties Water-disp. 

Uses Wetting agent, dispersant, emulsifier used in insecticides, herbicides, fungicides chelating agent for 24D and 45T amines Properties Brn. powd. water sol. 95% act. 

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