Standard No.:	QB/T 5452-2019
English Name:	Oral care and cleansing products- Determination of benzalkonium chloride in toothpaste- High performance liquid chromatography method
Chinese Name:	口腔清洁护理用品 牙膏中苯扎氯铵含量的测定 高效液相色谱法
Professional Classification:	QB    Professional Standard - Light Industry
Source Content Issued by:	Ministry of Industry and Information Technology
Issued on:	2019-12-24
Implemented on:	2020-7-1
Status:	valid
Target Language:	English
File Format:	PDF
Word Count:	3500 words
Translation Price(USD):	105.0
Delivery:	via email in 1~3 business day

本标准规定了高效液相色谱法测定牙膏中苯扎氯铵含量的方法要点、试剂与标准物质、仪器、分析步骤、结果计算、回收率和精密度、允许差。
本标准适用于牙膏中苯扎氯铵含量的测定。
本标准所指苯扎氯铵为十二烷基二甲基苄基氯化铵、十四烷基二甲基苄基氯化铵和十六烷基二甲基苄基氯化铵之和。
本标准苯扎氯铵的检出浓度为2 mg/L，最低定量浓度为6 mg/L。若取1.0 g牙膏样品，加提取液10 mL，苯扎氯铵的检出限为20 mg/kg，定量限为60 mg/kg。