以1-萘酚酞为指示剂测定苯酚生产中氧化液酸度  

Acidity determination of oxidation solution from phenol production with 1-naphtolphehalein as indiction

作　　者：高竹梅[1] 李东艳[1] 

机构地区：[1]中国石油吉林石化公司染料厂,吉林吉林132021

出　　处：《石化技术与应用》2010年第1期56-57,共2页Petrochemical Technology & Application

摘　　要：以1-萘酚酞代替酚酞作为指示剂对苯酚装置氧化液酸度进行测定,考察了该方法的准确性。结果表明,采用1-萘酚酞作指示剂,终点pH值为8.69与理论终点pH值8.70接近。对已知酸度为288mg/kg的样品测定结果表明,采用1-萘酚酞作指示剂测得酸度偏差为3mg/kg,而以酚酞为指示剂测得酸度的偏差为102mg/kg。The acidiy of oxidation solution from phenol production was determined with 1-naphtolphehalein as indicator instead of phenolphthalein,and the accuracy was investigated.The results showed that when 1-naphtolphehalein as indicator,the pH value at end point was 8.69,similar with the theoretical pH value at end point 8.70. The determination results of organic acid samples which acidity was known as 288mg/kg indicated that the deviation for 1-naphtolphehalein was 3 mg/kg,while 102mg/kg for phenolphthalein.

关 键 词：苯酚 氧化液 酸度 指示剂 酚酞 1-萘酚酞 pH值 

分 类 号：TQ207.4[化学工程—有机化工]