Technical Data Sheet
® CH OH Amietol M21 3 N 2-Dimethylaminoethanol (DMAE) 3CH Technical Data Sheet
Synonyms Chemical & Physical properties Property Value N,N-Dimethylethanolamine; Dimethylethanolamine; Deanol; DMEA; N,N-Dimethyl-2-Hydroxyethylamine; CAS Nr. 108-01-0
N,N-Dimethyl-N-ethanolamine EINECS Nr. 203-542-8
Presentation UN Nr. 2051
DMAE is a clear hygroscopic liquid with an amine-like Form Liquid odour.
Colour Colourless The freshly distilled product is colourless, but prolonged storage may induce a yellowish Odour Amine-like discoloration. Molecular weight 89.14
Physical & Chemical behaviour Melting point -59°C DMAE can be mixed in all proportions with water. It is also soluble in most organic solvents. Boiling point 134.5 °C
In chemical nature it is both a tertiary amine and an Flash point 39 °C (DIN 51755) alcohol. Neutralisation of the amino function by acids will result in salts. Explosion limits Lower LEL 1.4 vol%
The product is stable at high temperatures but must be Upper UEL 12.2 vol% kept away from oxidisers and acids. Ignition temperature 245 °C (DIN 51794) Specifications Heat of vaporisation 94.8 kcal/kg Property Specification Test method Heat of combustion 768 kcal/mol DMAE ≥ 99.8% 19E311/312 Refractive index n 20 1.4294 D Water ≤ 0.1% 19E313 Density 0.887 kg/l Colour ≤ 20 APHA 19E315 Viscosity (20 °C) 3.85 cPoise
Vapour pressure (20 °C) 6.1 mbar
Packaging Solubility in water Complete Metal drums – 180 kg net., IBC’s 885 kg net. Partition coefficient -0.55 (log Pow) Bulk Octanol/water
pH of a 0.001 N aqueous 9.5 solution
Critical temperature 299 °C
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Chemical & Physical properties Applications Critical pressure 41.4 bar Flocculents DMAE is a key intermediate in the production of Heat of formation -202 000 kJ/kmol dimethylaminoethyl(meth)acrylate. The water-soluble Heat capacity (20 °C) 0.5936 kcal/kg K polymers produced from this ester, mostly by copolymerisation with acrylamide, are useful as Thermal conductivity (20 °C) 0.1537 W/m K flocculents. Surface tension (20 °C) 35.5 dyne/cm Pulp and paper chemicals The dry strength or wet strength of paper is increased Storage by adding to the unbleached kraft paper a Carbon steel is adequate for storage of DMAE. homopolymer of dimethylaminoethyl(meth)acrylate. Stainless AISI 316 L is preferable if colour stability is Ion exchange resins to be maintained over a long period. Anion exchange resins can be prepared by reacting Copper and copper alloys should be avoided. tertiary amines like DMAE or trimethylamine with the For bulk storage a nitrogen blanket is necessary to chloromethylated vinyl or styrene resin. prevent moisture uptake and discoloration. Increased exchange capacity is obtained by reacting a cross-linked polymer, containing haloalkyl functions, Labeling with an amine. See Material Safety Data Sheet. The anion exchange membranes are aminated with DMAE. Transport regulations Polyurethane See Material Safety Data Sheet. In the production of PU foam for insulating purposes, the use of DMAE is a practical and effective way of Toxicology / Ecotoxicology reducing the total formula cost. See Material Safety Data Sheet. Resins Characteristics • Epoxy See Material Safety Data Sheet. DMAE is an effective and versatile curing agent for epoxy resins. It also acts as viscosity reducing agent for resinous polyamides and other viscous
hardeners. DMAE is also an extremely good wetting agent for various filters in epoxy formulations.
• Acrylics DMAE improves the acid-dyeing properties of
acrylonitrile polymers by copolymerisation of DMAE esters. Water-soluble DMAE salts are used to improve the behaviour of coatings and films to make them water-resistant or provide specific desired sensitivity to water.
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Textiles – leather Drugs and pharmaceuticatls
The acid-dyeing capability of polyacrylonitrile is DMAE is often transformed by chlorination into improved by copolymerisation of the acrylonitrile with dimethylaminoethylchloride.HCI. DMAE esters, such as dimethylaminoethyl acrylate. Some of the following pharmaceutical products can be Cellulose modified with the homopolymer of synthesised: bephenium hydroxynaphthoate, dimethylaminoethyl methacrylate can be dyed with brompheniramine, carboxamine, chloropyramine, ester salts of a leuco vat dye. chlorphenamine, chlorphenoxamine, dibenzepin, The impregnation of cellulose with diltiazem, dimethindene, diphenhydramine, polydimethylaminoethyl methacrylate also improves doxylamine, meclofenoxate, mepyramine, noxiptiline the gas-fading resistance of the fabric. HCI, phenyriamine, phenyltoloxamine, tarnoxifen, tripelenamine, cefotiam. Long-chain alkylphosphates of DMAE form anti-static agents for non-cellulosic hydrophobic textile materials. Paints, coatings inks DMAE is excellent for neutralising free acidity in water-
soluble coating resins. The resin can be acrylic, alkyd or styrene-maleic. DMAE is often preferred to triethylamine when lower volatility is required, as in electrodeposition. It also improves pigment wettability. Some synthetic enamels with a metallic appearance can be prepared from dimethylaminoethyl methacrylate polymers. In flexographic inks DMAE can be used to solubilize resins and inoxes. In leatherthe adhesion of latex coatings can be improved by copolymerisation of the acrylic monomers with dimethylaminoethyl acrylate. Surfactants –detergents Alkylethanolamine salts of anionic surfactants are generally much more soluble than the corresponding sodium salts, both in water and oil systems. DMAE can be an excellent starting material in the production of shampoos from fatty acids. The fatty acid soaps are especially effective as wax emulsifiers for water- resistant floor polishes.
DMAE titanates, zirconates and other group IV-A metal esters are useful as dispersing agents for polymers, hydrocarbons and waxes in aqueous or organic solvent systems.
TDS : Amietol® M21 - 12/2005 Page 3/4 For further questions please contact our regional sales departments
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December 2005 Technical Data sheet 51086/12-2005 Supersedes TDS 51086/0205 Printed in Belgium
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The information contained in the present notice represents our best knowledge in this domain without constituting any express or implied guarantee or warranty of any kind and without resulting in any responsibility for TAMINCO N.V. whatsoever. TAMINCO N.V. declines all responsibility in cases where the use by the client of the information communicated constitutes a violation of an intellectual property right of which a third party is the holder. It is expressly provided that TAMINCO N.V. is the sole owner of the intellectual property rights relating to the information communicated. It is expressly provided that the information relating to the use of the products is given for information purposes only. No guarantee is provided to the client that the product is adapted to the specific use for which it is intended by the client. The client should perform his own tests to determine the suitability for a particular purpose. Our only intention is to rapidly provide the user with information on the various application possibilities of our products, it bein g understood that the client should adapt the information to the specific conditions of their use and to the characteristics of other products with which they are mixed.
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