Abstract: Compounds having the formula ##STR1## wherein M is an alkali metal or ammonium, R.sub.1 and R.sub.2 are hydrogen, methyl or ethyl and R.sub.3 is hydrogen, methyl, ethyl or COOM are useful sequestrants and detergency builders. Lower alkyl esters and acids of such compounds are useful intermediates for their production.

Abstract: Organic compounds having a substituent represented by the formula ##STR1## wherein M is alkali metal or ammonium are useful complexing agents for metal and/or alkaline earth metal ions.

Abstract: Organic compounds having a substituent represented by the formula ##STR1## wherein M is alkali metal or ammonium are useful complexing agents for metal and/or alkaline earth metal ions.

Abstract: Phosphonoether carboxylate esters and acids are intermediates for phosphonoether carboxylate salts useful as sequestering agents.

Abstract: A crystalline hydrate of trisodium carboxy methoxy malonate is an effective sequestrant and detergency builder.

Abstract: A novel, crystalline, ethercarboxylate monohydrate useful as a detergency builder exhibits excellent handling and thermal stability properties and is particularly suited for use in preparing detergent formulations.

Abstract: Compounds represented by the formula ##EQU1## wherein Rx is ##EQU2## AND A is hydrogen, methyl, ethyl, CH.sub.2 OH or RxOH; M being alkali metal, ammonium, alkyl ammonium, or alkanol ammonium and Rz being hydrogen, alkyl, phenyl, phenyl alkyl, alkoxy alkyl, alkoxy phenyl or alkoxy phenyl alkyl are useful as complexing agents and/or detergency builders. The ester and acid forms of these compounds are useful as intermediates for their preparation.

Abstract: Dental creams, particularly translucent dental creams, containing finely divided synthetic amorphous silica polishing agents, such polishing agents have an average refractive index of from about 1.410 to 1.440.

Abstract: A process for the preparation of 3-(3,4-dihydroxyphenyl)-L-alanine (L-DOPA) wherein .alpha.-acetamido-4-hydroxy-3-alkoxy-cinnamic acid acetate is subjected to catalytic asymmetric hydrogenation to yield an optically active mixture N-acetyl-3-(4-hydroxy-3-alkoxyphenyl)-alanine acetate, with the L enantiomorph being present in a major amount and the D enantiomorph being present in a minor amount, from which N-acetyl-3-(4-hydroxy-3-alkoxyphenyl)-L-alanine acetate can be easily recovered and is then converted to L-DOPA.Novel precursors for L-DOPA are prepared in the process of this invention.

Abstract: Chloromethyl ether impurities are removed from alkylbenzyl chlorides containing the same by treatment with an aqueous base.

Abstract: Compositions comprising a mixture of from 60% to 95% by weight ##EQU1## (M is alkali metal or ammonium) and, correspondingly, 5% to 40% by weight sodium carbonate function as a synergistic detergency builder.

Abstract: 1-(3'-Hexenyl)-1-cycloalkanols and their esters characterized by the structural formula ##SPC1##Wherein R represents hydroxyl or R.sup.1 COO--, wherein R.sup.1 represents alkyl having from 1 to 8 carbon atoms, aryl or aralkyl and n is an integer from 1 to 3. These compounds can be in the cis or trans forms or mixtures thereof. The compounds have very pleasant, strong and long lasting green, floral, rosy aromas and are useful as fragrances or as components in fragrance compositions.

Abstract: A process for the nitration of halogenated aromatic compounds is improved by carrying out the nitration in the presence of a phosphorus compound in an amount sufficient to produce an ortho-directing effect. Phosphoric acid is particularly effective over a wide range of temperatures.

Abstract: Refined dicarboxylic acid anhydrides such as maleic anhydride are provided with improved color stability by a treating agent selected from the group consisting of chlorine and halides or elements in group IVb of the periodic table, the transition elements, vanadium, chromium, manganese, mercury, silicon, phosphorus, bismuth, antimony, lead, cerium and sulfur.

Abstract: Sequestrant compounds represented by the ##EQU1## wherein X is alkali metal or hydrogen, are prepared by oxidation of a compound represented by the formula ##EQU2##

Abstract: Fluorine compounds are removed from aqueous phosphoric acid by extraction with a mixture of a silane and a long-chain hydrocarbyl amine.BACKGROUND OF THE INVENTIONThis invention relates to a process for removing fluorine from aqueous phosphoric acid.It is known that wet-process phosphoric acid obtained by acidulation of phosphate rock contains substantial amounts of fluorine, predominantly in the form of fluorine compounds such as fluorophosphates and various metal fluorides. Even following purification by known extraction processes, for example, extraction with various organic amines, ethers, etc., such phosphoric acid generally remains contaminated with undesirably high quantities of fluorine compounds with fluorine contents of 1,000 parts per million (ppm) by weight or more not being uncommon.Fluorine contents of this magnitude introduce complications relative to the use of the acid in various applications.

Abstract: Hydroxy ether carboxylates represented by the formula ##EQU1## wherein M is alkali metal, ammonium, alkyl ammonium or alkanol ammonium and A is hydrogen, methyl, ethyl, or CH.sub.2 OH, are useful as complexing agents and detergency builders. The ester and acid forms of such compounds are useful as intermediates for preparation of the salts.

Abstract: 2-Alkyl-oct-5-en-2-ols and their esters characterized by the structural formula ##EQU1## wherein R represents alkyl having from 1 to 8 carbon atoms and R.sup.1 represents hydroxyl or R.sup.2 COO--, wherein R.sup.2 represents alkyl having from 1 to 8 carbon atoms, aryl or aralkyl. These compounds can be in the cis or trans forms or mixtures thereof. The compounds have very pleasant, strong and long lasting green, floral, rosy aromas and are useful as fragrances or as components in fragrance compositions.

Abstract: Trisodium carboxymethyloxysuccinate monohydrate is useful as a metal complexing agent, detergency builder and desiccant.

Abstract: It was found that the process for the nitration of halogenated aromatic compounds is improved by carrying out the nitration in the presence of a phosphorus compound in an amount sufficient to produce an ortho-directive effect. The addition of polyvalent metal elements such as vanadium, molybdenum, tungsten, and other elements that have the capability of existing in a variety of oxidation states, to a mixture of phosphoric and nitric acid improves the yield of the nitrohaloaromatics without affecting the isomer ratio.