Alkyl dimethyl amine

FiaaHy, a-olefias find their way iato the surfactant and disiafectant market through conversion, first to alkyl dimethyl amine, then to benzyl chloride quats (BAUMAC) and amine oxides. The former are used broadly as disiafectants, often ia combination with cleaning products. The latter is a direct active ia consumer and iadustrial cleaning products. 

Linear alpha-olefins are the source of the largest volume of ahphatic amine oxides. The olefin reacts with hydrogen bromide in the presence of peroxide catalyst, to yield primary alkyl bromide, which then reacts with dimethylamine to yield the corresponding alkyl dimethyl amine. Fatty alcohols and fatty acids are also used to produce amine oxides (Fig. 1). 

AHphatic amine oxides such as alkyl dimethyl amine oxides and aLkylbis(2-hydroxylethyl)amiae oxides range from practically nontoxic to slightly toxic (79). Reported LD qS range from 1.77 g/kg to 6.50 g/kg. The commercial concentrated products are primary skin and eye irritants. At concentrations of 2%, these products may be considered as nonirritating to the skin or eye. 

Alkyl dimethyl c o c o alkyl dime thyl arnine s Tertiary amines [61788-93-0] -22... 

QuaterniZation. Quaternary ammonium compounds are formed by alkylation of alkyl, alkyl dimethyl, dialkyl, and dialkylmethyl fatty amines with methyl chloride, dimethyl sulfate, or benzyl chloride (1,3,7,12,29). 

Alkyl dimethyl and dialkylmethyl tertiary amines are commercially available. These amines are prepared by reductive methylation of primary and secondary amines using formaldehyde and nickel catalysts (1,3,47,48). The asymmetrical tertiary amines are used as reactive intermediates for preparing many commercial products. 

The major source of raw materials for the preparation of fatty amines is fats and oils such as tallow, and coconut, soya, and palm oils. Ethyl Corporation uses petrochemicals as raw materials to prepare alkyl dimethyl and dialkylmethyl tertiary fatty amines, trademarked as AE)MA and DAMA products, which can be suppHed as single-carbon chain-length cuts or custom blends (13). Commercially available high purity fatty amines are Hsted in Table 3. Cost of the amines can vary owing to supply of raw materials. 

Other examples of esterification with trialkyloxonium salts have been reported.7,8 The present procedure offers the advantages that the reactive carboxylate ion is generated in sitv and that a low-boiling, nonaqueous solvent is employed, whereby the experimental procedure is considerably simplified. A related method has been reported which utilizes a hindered amine wdth dimethyl sulfate [Sulfuric acid, dimethyl csterj as the alkylating agent.9 The present procedure is carried out under somewhat milder conditions and avoids the use of highly toxic reagents. 

N-Alkyl-dimethyl-amine konnen in einem Eintopfverfahren aus Isothiocyanaten mit Lithiumalanat und nachfolgendes Kochen mit Ameisensaure-athylester erhalten werden (s.a. S. 242f.)3 ... 

Miscellaneous. The amine oxides used in household products are generally alkyl dimethyl amine oxides and are prepared from alcohols as shown below ... 

These alkyl dimethyl amine oxides are used as foam stabilizers primarily in light-duty liquids and shampoos where the major active ingredient is either an alcohol ether sulfate or an alcohol sulfate. The alkyl group is usually C19 to C.. which gives the best overall foam stability (3). 12 14... 

Methyl sulfate is not only of analytical interest as a counter ion of pharmaceutically relevant compounds. Rychtman [71] describes the trace analysis of this substance in pharmaceutical products that have been produced via alkylation with dimethyl sulfate. Tetraalkylammonium compounds, for example, may be synthesized by quatemation of tertiary amines with dimethyl sulfate ... 

In acid solutions, the amino group is protonated and acts as a cationic surfactant, whereas in neutral or alkaline solution the amine oxides are essentially nonionic in character. Alkyl dimethyl amine oxides are water-soluble up to Cj, alkyl chain. Above pH 9, amine oxides are compatible with most anionics, but at pH 6.5 and below some anionics tend to interact and form precipitates. In combination with anionics, amine oxides can be used as foam boosters (e.g., in shampoos). 

Alkylation of l,2,4-triazin-3-amines with dimethyl sulfate was reported to yield the 1-methyl-1,2,4-triazinium salts 6 (R5 = Me).258 It was thought that alkylation of l,2,4-triazin-3-amines with iodomethane gave a 1 1 mixture of the 3-amino-l-methyl and the 3-amino-4-methyl-l,2,4-triazinium salts. However, reexamination of this reaction showed that Nl and N2 alkylated products 6 and 7 were isolated, but no 4-alkyl-l,2,4-triazinium salt.258 The formation of 2-substituted l,2,4-triazin-3-imines 8 during the alkylation of l,2,4-triazin-3-amines (R3 = H) has also been reported.257,26t> 264 When NR3R4 = NH2, the main products with methyl iodide are 2-methyl-l,2,4-triazin-3-imines 8 and the 1-methyl-1,2,4-triazinium salts 6 the minor products NR3R4 = NHMe affords predominantly the l-methyl-l,2,4-triazinium salts 6, and NR3R4 = NMe2 yields only the 1-methyl-l,2,4-triazinium salts 6.257... 

Admox 1214. [EthyQ Alkyl dimethyl-amine oxide foaming agent, vise, modifier, emollient for anionic surfactants. 

Barlene . [Lonza] Alkyl dimethyl amines cationic deteigent corrosion inhibiror, emulsifier chemical intermediate, raw matmial fix surfactants. 

Genaminox. [Hoechst Celanese/Colorants Surf. Hoechst AG] Alkyl dimethyl amine oxides foaming agent stabilizer, thickener for personal care... 

Amines, dimethylsoya alkyl Dimethyl soyamine EINECS 263-017-4 Soya dimethyl amine. 

Three of the five fragments have now been assembled, and only the two amine alkylations remain. The first alkylation makes use of the epoxide to introduce the required 1,2-amino-alcohol functionality. The protected enantiomerically pure piperazine reacted with the epoxide, and the product was treated with acid to deprotect both the second piperazine nitrogen and the erw-dimethyl group left over from the earlier chiral auxiliary step. The newly liberated secondary amine was alkylated with the reactive electrophile 3-chloromethyl pyridine, and the final product was crystallized as its sulfate salt. 

Chem. Descrip. Amine-alkyl modified dimethyl silicone fluid CAS 9006-65-9... 

Features Compat. with dimethyl silicone fluids, aliphatic and aromatic hydrocarbon soivs. good heat stability high amine-alkyl content Properties Colorless to straw, clear to hazy liq. m.w. 31,000 sp.gr. 1.00 dens. 8.0 Ib/gal vise. 6600 cSt amine no. 54 flash pt. (PMCC) > 300 F Toxicology Alkaline material prevent contact with skin, eyes avoid breathing vapors... 

CAS 61788-93-0 EINECS/ELINCS 263-020-0 Synonyms Amines, coco alkyl dimethyl Coco dimethyl amine N,N-Dimethylcocoamine Dimethyl coconut amine Classification Tertiary aliphatic amine Empirical C H N... 

Alkyl (C12-C14) acrylate. See Lauryl acrylate Alkyl (C12-C14) amine. See Lauramine Alkyl (C13-C15) amine. See C13-15 amine Alkyl (CsCis) dimethyl-3,4-dichlorobenzyl ammonium chloride. See Alkyl dimethyl, dichlorobenzyl ammonium chloride N-(Alkyl C10-C16)-N,N-dimethylglycine betaine. See Cl 2-14 alkyl dimethyl betaine Alkyl (C8, CIO) glycidyl ether. See Alkyl (C8-10) glycidyl ether... 

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