Nippon Carbide Kogyo Kabushiki Kaisha

Kenichi Ishii

Masahiro Murotani

Shinya Mita

Masanori Sasaki

Hiroshi Shibafuchi

Shinichi Kakinuma

Yasushi Imai

Takehiko Yoshie

Hiroaki Obata

Hajime Mura

Youichi Fukunishi

Hidenori Nitta

Hitoshi Horikiri

Atsushi Hirota

O-isopropyl-isourea hydrogen sulfate or sulfate represented by the formula (I): wherein X represents HSOor &#xbd; SOand the production method thereof, wherein O-isopropyl-isourea hydrogen sulfate is obtained by reacting cyanamide and isopropyl alcohol in the presence of sulfuric acid and is neutralized with an alkali metal hydroxide to produce O-isopropyl-isourea sulfate.

O-isopropyl isourea salt and production method thereof

A method of obtaining a high purity 2-cyanoimino-1,3-thiazolidine, at a high yield, by cyclization reaction of dimethyl N-cyanoiminodithiocarbonate ester with 2-aminoethane thiol or the salt thereof in the presence of an alkali metal hydroxide is disclosed.

Process for producing 2-cyanoimino-1,3-thiazolidine

Method of production of 2-cyanoimino-1, 3-thiazolidine

Addition of a dicarboxylic acid such as adipic acid to a cyanamide aqueous solution brings about improvement in storage stability of the cyanamide aqueous solution.

Cyanamide aqueous solution

A method for producing 3-amino-5-mercapto-1,2,4-triazole, useful as an intermediate compound for a medicine or pesticide, or the intermediate thereof, a salt of N-guanidino thiourea from aminoguanidine thiocyanate or a thiocyanate and an aminoguanidine compound in the presence of an acid in a polar solvent, or even from hydrazine and cyanamide is disclosed.

Processes for producing a salt of N-guanidino thiourea and

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Uozu, Japan

Kenichi Ishii