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(31) Zinc gluconate is synthesized with calcium gluconate, sulfuric acid and zinc oxide.

(32) Methods:Colorimetry of Sulfuric acid—Anthrone was used to measure the content of total polysaccharides.

(33) The result showed that if the waste slag compose of 10% fluid and react with low concentrated sulfuric acid, 90% dihydrate plaster would be prepared.

(34) The influences of mole ratios of the reactants, concentration of sulfuric acid, sulfonation temperature and catalyst on reaction are discussed.

(35) Boric sulfuric acid anodizing is a new process of thin anodizing film. It may be used instead of chromic acid anodizing. This process is a "clean process" in environmental protection.

(36) In the reaction of sulfonation, the azeotropic water removing, sulfuric acid was used as sulfonating agent.

(37) The extraction raffinate can be concentrated by one-stage evaporation to obtain sulfuric acid with 80% of mass fraction.

(38) After pretreatment and dilution, waste sulfuric acid from titanium white production was used for preparation of resorcinol by acidic hydrolysis of meta- phenylenediamine .

(39) The influence factors of sulfuric acid soaking for treating chrysotile was investigated by means of orthogonal test.

(40) Must not add water, well water and concentrated sulfuric acid.

(41) The invention relates to a method for preparing a sulfonated carbon solid acid catalyst, which uses a sulfonic aromatic compound to replace sulfuric acid.

(42) Thorpe Group of Companies for the sulfuric acid Changzhou, Zhenjiang,[Sentence dictionary] Yixing region distributor.

(43) Down is soluble in alkaline reagents such as sodium hypochlorite, sodium hydroxide solution, insoluble in acid such as sulfuric acid, hydrochloric acid reagents and solvents.

(44) Methods: The polysaccharides was determined by colourimetry with sulfuric acid - phenol reagent.

(45) Methods: Cultivate Ganoderma in glycyrrhiza waste residue, and determine the polysaccharose content by phenol - sulfuric acid reaction system.

(46) It was proved that the osazone sulfuric acid development method(OSADM) is a quite ideal DAHPS activity assay method, according to the osazone 's absorption map, the linear relations, detecting limit.

(47) Indium was recycled from a certain converter slag containing 0.4% indium through a method of thermal activation leaching in sulfuric acid solution.

(48) The ceramic coating was produced with sulfuric acid dregs instead of industrial ferri powder by SHS.

(49) The proton exchange of the polarized benzoquinone radical in solution contained sulfuric acid was studied.

(50) A caustic acidic crystalline compound, NHCNH, prepared by treating calcium cyanamide with sulfuric acid.

(51) A salt of a pullulan aminoalkyl ether according to claim 1, wherein the salt -forming acid is hydrochloric acid , hydrobromic acid , sulfuric acid , nitric acid , acetic acid , or oxalic acid .

(52) The results show that the binder mass fraction and the impregnation concentration of sulfuric acid have great effect on the activity of the catalyst.

(53) The morphology of spherulite and mat-crystal structure in PPTA films coagulated from pure sulfuric acid solutions under different conditions has been studied by light scattering method.

(54) Cobalt sulfate can be obtained by stripping organic phase with sulfuric acid.

(55) Understanding of the manufacture of sulfuric acid in two ways, contact the Law and nitrification.

(56) A method of chromotropic acid absorptiophotometry determination of Ti in iron by aqua acid and sulfuric acid in sample dissolving was described.

(57) The chemical method include treating with sulfuric acid, saponification, acylation, esterification, etc.

(58) The dioctyl glutaricate was prepared by esterification of octyl alcohol and glutaric acid separated from dicarboxylic acid in catalysis of sulfuric acid.

(59) O-Phenylphenol react with sulfuric acid, formaldehyde and ferric iron to form a red colour compound.

(60) Overall, Amy card star, that Nebuchadnezzar flubendazolum brulamycin, sulfuric acid test for jinggangmeisu chicken escherichia coli sensitivity is highest.