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溴值法测定加氢石油树脂不饱和度局限性分析
引用本文:荣泽明,郭方,郭文革,吕连海.溴值法测定加氢石油树脂不饱和度局限性分析[J].分析试验室,2007,26(1):109-111.
作者姓名:荣泽明  郭方  郭文革  吕连海
作者单位:1. 大连理工大学精细化工国家重点实验室,大连,116012
2. 大庆华科股份有限公司,大庆,163316
摘    要:探讨了国内现行行业标准《HG2231-91石油树脂(PR)溴值试验方法》在测定深度加氢石油树脂不饱和度时存在的局限性. 实验结果表明, 在测定不饱和度较低的加氢石油树脂的溴值时, 应采用浓度为0.1 mol/L的Br标准滴定溶液, 加入量为6~7 mL;碘化钾的加入量应为假设溴值为零时的理论用量, 这样在测定不饱和度较低的石油树脂的溴值时, 才能保证碘化钾过量, 得到可靠的溴值.

关 键 词:溴值  溴指数  石油树脂  加氢
文章编号:1000-0720(2007)01-109-03
修稿时间:2006-02-132006-04-28

Study on deficiency and limitation of current bromine test in determination of unsaturated bonds in hydrogenated petroleum resin
RONG Ze-ming,GUO Fang,GUO Wen-ge,L Lian-hai.Study on deficiency and limitation of current bromine test in determination of unsaturated bonds in hydrogenated petroleum resin[J].Chinese Journal of Analysis Laboratory,2007,26(1):109-111.
Authors:RONG Ze-ming  GUO Fang  GUO Wen-ge  L Lian-hai
Institution:1. State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian 116012; 2. Daqing HuaKe Co. Ltd, Daqing 163316
Abstract:The deficiency and limitation of current bromine test method for quantitative determination of unsaturated bonds in hydrogenated petroleum resin was analyzed. The results showed that bromine number of hydrogenated petroleum resin should be determined by employing 0.1 mol/L bromine standard solution and 6 - 7 mL dosage. The addition of potassium iodide should be in an amount equivalent to the theoretical value on the assumption that the bromine number of standard sample is 0 g Br/100 g, which can assure the potassium iodide is excessive.
Keywords:Bromine number  Bromine index  Petroleum resin  Hydrogenation
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