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 production of a catalyst for the synthesis of isoprene from isobutylene and formaldehyde which comprises providing a catalyst precursor comprising silica and alumina and modifying the catalyst precursor by treatment with an alkali metal hydroxide and subsequently neutralizing by treatment with a mineral acid, depositing a transition metal on the treated catalyst precursor and calcining to form the catalyst.

Abstract: Method of ammoxidizing paraffin hydrocarbons to unsaturated nitriles in a transported bed reactor at a temperature of from 350.degree. to 550.degree. C. using a catalyst comprising antimony and uranium.

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: An oxidation process for the conversion of an unsaturated amine to an unsaturated nitrile in which the oxidation reaction takes place in the presence of a nitrogen base, a cuprous halide and an alcoholic compound.

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: 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: 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: 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: 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.

Abstract: This invention relates to methods for rapidly producing beta hydroxy ethylene glycol ethers by reacting internal epoxyalkanes with mono or poly ethylene glycols in the presence of critical amounts of acidic catalysts under controlled temperature conditions.

Abstract: Diglycolic acid is prepared by oxidation of p-dioxanone.

Abstract: Organic compounds having a substituent represented by the formula ##EQU1## wherein M is alkali metal or ammonium which are useful complexing agents for metal and/or alkaline earth metal ions are prepared by reaction of a conjugate base of a hemiketal of a ketomalonic acid diester and an alcohol with a bromo or iodo acetate ester and saponifying the resulting product.

Abstract: Compounds represented by the formula ##EQU1## and salts thereof represented by the formula ##EQU2## wherein Q is bromine, chlorine, --O-alkali metal or OH; R is hydrogen or an alkyl group containing from 1 to 20 carbon atoms; M is alkali metal; and Rx is ##EQU3## n being an integer from 4 to 10, or ##EQU4## Rz being hydrogen, alkyl phenyl alkyl, alkoxy alkyl, alkoxy phenyl, alkoxy phenyl alkyl or --COOX, X being R or M, are useful as intermediates for the preparation of sequestrants.

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.