sodium cyanate

Sodium cyanate was prepared from reactants & urea and anhydrous sodium carbonate through liquid-solid chemical reaction method , in the solvent of N , N-dimethlformamide ( DMF ) .

使用液固化学反应法，以尿素和无水碳酸钠为原料，在N，N-二甲基甲酰胺（DMF）溶剂的反应介质中，制备了氰酸钠产品。

Hydantoin was synthesized from glycine and sodium cyanate , which was condensed with benzaldehyde to give monohydrated sodium phenylpyruvate in 67.0 % of overall yield after alkaline hydrolysis .

由甘氨酸和氰酸钠反应合成海因，然后与苯甲醛缩合，经碱水解得到一水合苯丙酮酸钠，总收率为67.0%。

The preparation of high purity sodium cyanate by liquid-solid chemical reaction method

液固化学反应法制备高纯度氰酸钠

Results showed that sodium cyanate with 98.1 % purity could be obtained in the medium of DMF , when the mole ratio of urea to anhydrous sodium carbonate was 2.5 , the reaction temperature 120 ~ 140 ℃ and reaction time 8 ~ 10 h.

实验结果表明，在DMF反应介质中，当尿素与无水碳酸钠物质的量比为2.50，反应温度120~140℃，反应时间8~10h，可以制得纯度为98.1%的氰酸钠产物。