Triethanolamine phosphate ester

Other DCAs introduced in the 1960s included the phosphated hydroxy-amines (hydroxylamine phosphate esters), such as triethanolamine phosphate ester. These are efficient scale inhibitors and are still employed in formulations today, but, like P-PO4, they are also prone to reversion (hydrolysis) to orthophosphates. 

This product is a triethanolamine phosphate ester. It is a slightly yellow liquid, relatively thick surfactant which is used in high caustic solutions. 

A mixture of monolauryl phosphate sodium salt and triethylamine in H20 was treated with glycidol at 80°C for 8 h to give 98% lauryl 2,3-dihydro-xypropyl phosphate sodium salt [304]. Dyeing aids for polyester fibers exist of triethanolamine salts of ethoxylated phenol-styrene adduct phosphate esters [294], Fatty ethanolamide phosphate surfactant are obtained from the reaction of fatty alcohols and fatty ethanolamides with phosphorus pentoxide and neutralization of the product [295]. A double bond in the alkyl group of phosphoric acid esters alter the properties of the molecule. Diethylethanolamine salt of oleyl phosphate is effectively used as a dispersant for antimony oxide in a mixture of xylene-type solvent and water. The composition is useful as an additive for preventing functional deterioration of fluid catalytic cracking catalysts for heavy petroleum fractions. When it was allowed to stand at room temperature for 1 month it shows almost no precipitation [241]. 

Phosphate ester, triethanolamine Disodium ethyl, butyl phosphonate silica Phosphonate... 

This chapter discusses the methods for preparation of phosphate esters in their acidic form. The esters are frequently maiketed as neutralized or partially neutralized salts. The counterions are alkali metals or organic amines, for example, triethanolamine. The salts possess greater hydrolytic stability than the free acids and are readily prepared from the free acids by neutralization. 

Commercial phosphate esters are usually mixtures of the free acids, although they may be sodium or triethanolamine salts. Monoesters nearly always contain some diester, and diesters both mono- and triester, with the nominal product predominating. They cannot be hydrolysed by either acids or alkalis at normal temperatures, but acid hydrolysis with strong acid at high temperature may be effective. 

Substituted phenol ethoxylate phosphate ester, triethanolamine salt Concentration % 96... 

Chem. Descrip. Surfoctant/chelate system contg. phosphate ester salt, diethylene glycol, IPA, triethanolamine ionic Nature Anionic UN 1993... 

Chem. Descrip. Complex phosphate ester of polyaromatic ethoxylate, triethanolamine salt... 

Emulsions containing a water-solubile herbicide salt and a herbicide soluble in an organic solvent are prepared by a mixture of water, dioctyl phthalate, and isophorone. In this case ethoxylated poly ary lphenol phosphate neutralized with triethanolamine and ethoxylated acid phosphoric acid esters is used as emulsifier [231],... 

In addition to reacting with enzymes, as described below, both 3 -and 5 -FSBA have been observed to react with certain commonly used buffers, with the concomitant release of fluoride ion in accordance with first-order kinetics. In the case of 3 -FSBA in buffers at pH 8 and 25°, the half-life is about 37 min for 0.01 M potassium phosphate and 0.01 M Tris acetate, whereas triethanolamine chloride at the same pH reacted more vigorously. In 0.01 M sodium barbital at pH 8, the half-life for 3 -FSBA was about 63 min this buffer has proved to be satisfactory for reaction with proteins. The 5 -FSBA does not react as readily with buffers, and at 30° in 0.01 M sodium barbital at pH 7.6, containing 0.2 M KCl and 15% dimethylformamide, its half-life was found to be about 8.4 hr. The reaction with the 3 - and 5 -FSBA might be expected to involve the unprotonated form of susceptible amino acids, and therefore the rate of reaction in many cases may proceed more rapidly at pH values that are on the alkaline side of neutrality. However, it must be kept in mind that the ester linkage of both 3 - and 5 -FSBA has limited stability below pH 6 and above pH 9. 

Robinson and Woods [9] produced perhaps one of the earliest experimental studies of antifoam mechanism. The study concerned the effect of various undissolved oils on the foam behavior of both aqueous and non-aqueous solutions of surfactant The oils included alkyl phosphates, alcohols (including diols), fatty add esters, and PDMS. The solutions were of aerosol OT (AOT or sodium diethylhexyl sulfosucci-nate) in either ethylene glycol or triethanolamine and sodium alkylbenzene sulfonate in water. Many quoted entry and spreading coefficients, however, violate Equations 3.11 and 3.12, which implies that these coefficients were non-equilibrium (i.e., initial) values where the relevant liquids are not mutually saturated. Robinson and Woods [9] observed that for these systems, wherever < 0, no antifoam effect is found. This then represents some evidence that a positive value of the initial entry coefficient is necessary for antifoam action. 

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