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(61) Remove of iron from sulfuric acid leaching solution of ferrochromium alloy by goethite is researched.

(62) Sulfuric acid dimethyl ester, one of the important chemical raw materials acts as the methylating agent in the organic synthesis for the purpose of replacing alkyl halide.

(63) Cyanamidealsocyanamid: a caustic acidic crystalline compound, NHCNH, prepared by treating calcium cyanamide with sulfuric acid.

(64) Aluminium hydroxide with 99.99% of purity was obtained by two-step purifying aluminium sulfate solution made from aluminium hydroxide and sulfuric acid with industry purity.

(65) By curing process, and used pyrite, pyrolusite and sulfuric acid as material, manganous sulfate was product.

(66) Foodstuff industry: the production of Miltonic acid (hydrochloric acid); extraction of edible oil (sulfuric acid); the industry of tinned fruits (hydrochloric acid).

(67) The phosphorus content of phytin was determination in molybdate -antimony-scandium color agent after it was digested by concentrated sulfuric acid and perchlorate, with its deviation of no over 5%.

(68) A new technology to produce potassium alum by soaking the alunite ripe breeze dilute sulfuric acid was introduced. Technological process and experimental conditions are described.

(69) Sulfuric acid and acetic anhydride were used as a cyclizing agent to prepare Ofloxacin intermediate.

(70) Bicyclic fused aziridines can generate regioselective ring opening reaction with various alcohols, catalyzed by slight concentrated sulfuric acid.

(71) Electrogenerated thallic ion at platinum anode in sulfuric acid media has been used as a coulometric intermediate.

(72) The powdery polyphosphate ferric sulfate was prepared from iron vitriol, the byproduct in titanium pigment production by sulfuric acid process[sentencedict.com], and complex oxidant.

(73) It had been found that ammonium ferric sulfate dodecahyrate was superior to sulfuric acid when used as catalyst for esterification of isoamyl alcohol and hexanoic acid.

(74) Refining processes with concentrated sulfuric acid or hydrogen fluoride as catalyst are currently being used for the manufacture of alkylation gasoline from isobutane and light olefins from FCCU.

(75) Company main products are electrolytic copper, gold, silver, sulfuric acid, iron pellets, iron fine sand, copper.

(76) The corrosion resistance of Q235 steel in 10% sulfuric acid and rich liquid was studied after steel was treated through the surface nitridation titanium.

(77) The anodic oxidation and electrolytic colouring of 6063 aluminum alloy containing rare earths in solutions of sulfuric acid and stannous sulfate are studied.

(78) That sulfuric acid reacts with copper[sentencedict.com], forming copper sulfate is known to most people.

(79) Reactive blue 19 has poor solubility in alkali liquor when drawing off sulfuric acid ester with strong hydrophilic in batch. So, this dyestuff can not be used on cellulose by this dyeing method.

(80) Which indubitably indicate that the bismuthous sulfide can only dissolve in halogen acid except hydrofluoric acid, the mixed solution of dilute sulfuric acid and alkali halide.

(81) Sulfuric acid, phosphoric acid, aluminum sulphate, calcium sulphate, calcium chloride and superphosphate were selected as chemical amendments for co-composting of pig manure and straw.

(82) Technology of sulfuric acid catalyzed ethyl esterification of high acid value tuna oil was studied.

(83) The synthesis of 6-hydroxyquinoline was improved by reacting of glycerin and p-aminophenol in the presence ofp-nitrophenol, concentrated sulfuric acid, boric acid and ferrous sulfate.

(84) The hydrated silicic acid slurry can be prepared through the reaction of water-glass and sulfuric acid, water-washing and homogenization treatment.

(85) The oxidation of isosafrole is reaction with anhydride - acetone, anhydride - acetic acid, sodium bichromate - sulfuric acid and so on.

(86) Experimental results showed that sulfuric acid and p-toluene sulfonic catalyst had great effect on the membrane stability and the solid super acid catalyst had no effect on membrane stability.

(87) Phthalmidomethyl copper phthalocyanine was synthesized, through reaction of cooper phthalocyanine which was dissolved by sulfuric acid, together with paraformaldehyde and phthalimide.

(88) Peroxyacetic acid was prepared from hydrogen peroxide and acetic acid in the presence of sulfuric acid at room temperature.

(89) The PS water reducing agent, which is very effective for concrete, has been made from waste poly styrene(WPS) by sulfuric acid of fuming sulfuric acid sulfonation process.

(90) The phosphorus content of phytin was determined in molybdate-antimony-scandium color agent after it was digested by concentrated sulfuric acid and perchlorate, with its deviation of no over 5%.