产品名称：	HH-624毛细管柱 表面活性剂中游离环氧丙烷含量的测定. 气相色谱法
产品型号：	HH-624毛细管柱
品牌：	1941
产品数量：
产品单价：	面议
日期:	2022-12-15

HH-624毛细管柱 表面活性剂中游离环氧丙烷含量的测定. 气相色谱法的详细资料

表面活性剂中游离环氧丙烷含量的测定. 气相色谱法
表面活性剂中游离环氧丙烷含量的测定. 气相色谱法 详细信息：

名称：毛细管柱
固定相：6 %腈丙基苯基 94 %二甲基聚硅氧烷，
规格：30m*0.53mm*0.3um
型号：HH-624

表面活性剂是这样一种物质，它在加入很少量时即能大大降低溶剂的表（界）面张力（一般以水为标准溶剂），改变体系的界面组成与结构，成为人们改变界面性质以适应各种要求的重要手段。

BS ISO 19619:2018规定了测定由环氧丙烷共聚物合成的表面活性剂中游离环氧丙烷的分析程序。该方法适用于通过顶空气相色谱（HS-GC）和基于外部程序的火焰离子化检测器（FID）定性和定量测定环氧丙烷加合物、聚醚和聚乙二醇酯中的环氧丙烷基团。气相色谱-质谱（GC-MS）用于确认目的。

表面活性剂中游离环氧丙烷含量的测定. 气相色谱法 测试谱图：




Specifications: 30m*0.53mm*0.3um

Surface active agents - Determination of free propylene oxide content Gas chromatography

Surface active agents - Determination of free propylene oxide content Details of gas chromatography:



Name: capillary column

Stationary phase: 6% cyanopropyl phenyl 94% dimethyl polysiloxane,

Specification: 30m * 0.53mm * 0.3um

Model: HH-624



Surfactant is a kind of substance that can greatly reduce the surface (interfacial) tension of solvent (generally water is the standard solvent) when a small amount of it is added, change the interface composition and structure of the system, and become an important means for people to change the interface properties to meet various requirements.



BS ISO 19619:2018 specifies the analytical procedure for the determination of free propylene oxide in surfactants synthesized from propylene oxide copolymers. This method is applicable to the qualitative and quantitative determination of propylene oxide groups in propylene oxide adducts, polyethers and polyethylene glycol esters by headspace gas chromatography (HS-GC) and flame ionization detector (FID) based on external procedures. Gas chromatography-mass spectrometry (GC-MS) is used for confirmation purposes.



Surface active agents - Determination of free propylene oxide content Gas chromatography test spectrum: