氰酸钠

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。

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 ) .

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%。

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 .

采用套碱工艺（碱性硫氰酸钠）将碱性流出液与硫氰酸钠产品分开，从而使产品pH呈中性，同时降低工艺过程中氢氧化钠的消耗量。

Fourthly , a kind of set alkali solution technique was adopted to separate the alkaline from the product , hence a neutral product was produced and the consumption of sodium hydroxide was reduced .

本文研究了丙烯腈（AN）和烯西基磺酸钠（SAS）在硫氰酸钠浓水溶液中于pH5和70℃下的共聚合。

The copolymerization of acrylonitrile ( AN ) with sodium allyl sulfonate ( SAS ) in concentrated aqueous solution of sodium thiocyanate at pH 5 and 70 ℃ is investigated .

以含铜离子废水为处理对象，利用一种新合成的三基配位聚合超分子试剂二硫代氨基三聚氰酸钠（TDC），研究了其对废水中铜离子和浊度的去除效果。

Removal of copper ions and turbidity by a new kind of three-group coordination polymerization precipitant , tri ( dithiocarbamate ) cyanuric acid ,( TDC ) was studied in this paper .

本项目针对大庆石化公司腈纶厂污水回收系统存在的硫氰酸钠回收率低、硫氰酸钠产品的pH、硫酸根和NVI（非挥发性杂质）含量等指标过高的问题开展研究。

Research was performed aiming at the low recovery rate of the waste recovery system and the high pH , high sulphate and high NVI ( non-volatile impurities ) in the sodium thiocyanate product .

设计和合成了一种新的三基配位聚合超分子试剂二硫代氨基三聚氰酸钠（TDC），并研究了将其作为一种新的重金属沉淀剂的可行性。

A new kind of three-group coordination polymerization agent tri ( dithiocarbamate ) cyanuric acid ( TDC ) was designed and synthesized , and the feasibility to use TDC as a kind of coordination polymerization precipitant for heavy ions was investigated .

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。

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.

根据离子阻滞法原理，应用YC-207树脂对腈纶溶剂硫氰酸钠溶液进行除杂脱色。

The sodium thiocyanate ( NaSCN ) solution was subjected to impurity removal and decolourization with YC-207 resin according to ion retardant principle , which had the advantages of high recovery ratio , satisfied purification effect and low cost .

GB/T14540.1-1993复混肥料中钼的测定方法硫氰酸钠分光光度法

Determination of molybdenum content for compound fertilizers & Thiocyanate spectrophotometric method

腈纶工业中硫氰酸钠溶剂的净化技术

The purification technology of sodium thiocyanate solvent for polyacrylonitrile fiber industry

硫氰酸钠法高吸湿腈纶的研制

Development of high-moisture absorption PAN fiber via sodium thiocyanate method

硫氰酸钠溶剂中铁离子脱除工艺的技术改进

Process improvement of ferrous ion removal from sodium rhodanate solution

液固化学反应法制备高纯度氰酸钠

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

丙烯腈、乙腈和硫氰酸钠对摇蚊幼虫的急性毒性

Acute Toxicity of Acrylonitrile , Acetonitrile and Sodium Rhodanide to Chironomus SP

从栲胶脱硫液中提取硫氰酸钠复合栲胶脱硫工艺的优化

Recovery of Sodium Thiocyanate from Desulfuration Liquid of Tannin Extract

58%硫氰酸钠储槽腐蚀原因分析

Analysis on the Causes of Corrosion of 58 % Sodium Thiocyanate Storage Tanks

反应混合液中硫氰酸钠的浓度为40%。

The concentration of sodium thiocyanate is 40 % in the reaction solution .

对硫氰酸钠除杂的基本方法进行了简要回顾。

Basic cleaning methods of NaSCN solution for PAN fiber have been discussed .

硫氰酸钠溶剂中甲基丙烯磺酸钠的测定

Determination of sodium Methylallyl sulfonate in sodium thiocyanate solvent

本文叙述硫氰酸钠溶剂中甲酸钠的测定方法。

A method of determination of the formates in sodium thiocyanate solvents is described .

本文通过实验分析了循环水中含有硫氰酸钠对循环水腐蚀性的影响。

The paper discussed the affect of NaSCN to the corrosion of recycle cooling water .

膜分离法净化硫氰酸钠

Purification of sodium thiocyanate by membrane

结果表明，利用高温净化除杂方法，可以把硫氰酸钠中的有机杂质全部去除干净。

Results indicate that all organic impurities can be cleaned out from NaSCN solution with this method .

GB/T1268-1998化学试剂硫氰酸钠

Chemical reagent Sodium thiocyanate

本文探讨了硫氰酸钠&氨太阳能间歇吸收制冷循环的性能。

This paper discusses the performance of a periodic ammonia & sodium thiocyanate solar energy absorption refrigeration cycle .

简要介绍了大庆石化腈纶厂回收污水中硫氰酸钠的工艺流程、原理及操作。

Brief Introduction the process , principles and operation that recovery in Daqing Petrochemical acrylic sodium thiocyanate from wastewater .

指出这一方法必将成为今后硫氰酸钠除杂的最有效的方法之一。

It will be a good method for us to remove the impurities in the NaSCN solution in the future .

腈纶生产中有一些有机物转化为可溶的不挥发性杂质，进入硫氰酸钠溶液，影响腈纶丝的质量。

Some organics are converted to soluble but non-volatile impurities and go into the sodium rhodanate solution which influence the quality of acrylic fibers .

根据这一理论对硫氰酸钠一步法腈纶装置的除铁工艺进行改进后，装置的物料消耗量显著减少。

The process of ferrous ion removal was improved for the nitrilon plant by sodium rhodanate one-step method and the consumption of materials decreased .