无机盐工业
主管:中海油天津化工研究设计院有限公司
主办:中海油天津化工研究设计院有限公司
   中海油炼油化工科学研究院(北京)有限公司
   中国化工学会无机酸碱盐专业委员会
ISSN 1006-4990 CN 12-1069/TQ

无机盐工业 ›› 2011, Vol. 43 ›› Issue (12): 47-.

• 论文 • 上一篇    下一篇

稳定性次氯酸钠溶液的制备和评价

李建生   

  1. 天津职业大学,天津 300410
  • 发布日期:2011-12-06

Preparation and evaluation of stabilized sodium hypochlorite solution

 LI  Jian-Sheng   

  1. Tianjin Vocational Institute,Tianjin 300410,China
  • Published:2011-12-06

摘要: 为解决次氯酸钠溶液自发分解和贮存稳定性问题,向氨基磺酸钠和三聚磷酸钠溶液中加入工业次氯酸钠溶液,制得有效氯含量5.0%(质量分数)、氨基磺酸钠含量8.8%(质量分数)、三聚磷酸钠含量4.8%(质量分数)、游离氢氧化钠含量2.0%(质量分数)的稳定性次氯酸钠溶液。在稳定性快速评价试验中,次氯酸钠溶液在54 ℃下贮存14 d,有效氯下降率为12.6%,推定有效期可达12个月。氨基磺酸钠稳定剂的作用机理是氨基磺酸钠与次氯酸钠在溶液中通过共价作用形成了分子团,从而有效抑制次氯酸钠溶液的自发分解。

关键词: 次氯酸钠, 氨基磺酸, 三聚磷酸钠, 稳定性

Abstract: In order to solve spontaneous decomposition and storage stability problems of sodium hypochlorite solution,a stabilized sodium hypochlorite solution containing 5.0% (mass fraction) active chlorine,8.8% (mass fraction) sodium sulfamate,4.8% (mass fraction) sodium tripolyphosphate,and 2.0% (mass fraction) free sodium hydroxide has been preparated by adding industrial sodium hypochlorite solution into solution of sodium sulfamate and sodium tripolyphosphate.In rapid stability evaluation tests,a stabilized sodium hypochlorite solution was stored for 14 d at 54 ℃ and 12.6% active chlorine was lost and a validity period of 12 months could be predicted.Machanism of stabilization was that an aggregation of molecules of sodium sulfamate and sodium hypochlorite in solution was formed by co-valent effect,so that spontaneous decomposition of sodium hypochlorite solution was inhibited effectively.

Key words: sodium hypochlorite, sulfamic acid;sodium tripolyphosphate;stability

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