Standard No.:	GB/T 12008.7-1992
English Name:	Polyether polyols-Determination of unsaturation
Chinese Name:	聚醚多醇中不饱和度的测定
Chinese Classification:	G31    Basic standards and general methods for synthetic resin and plastic
Professional Classification:	GB    National Standard
Issued by:	STSB
Issued on:	1992-04-29
Implemented on:	1993-4-1
Status:	superseded
Superseded by:	GB/T 12008.6-2010 Plastics—Polyether polyols—Part 6:Determination of degree of unsaturation
Superseded on:	2011-8-1
Language:	English
File Format:	PDF
Word Count:	1500 words
Price(USD):	184.00
Delivery:	via email in 1~3 business day

本标准规定了用滴定分析方法测定试样的不饱和度。本标准适用于聚氨酯原料聚醚多醇的碳―碳不饱和化合物的测定。本标准不适用于分子中不饱和部分与羰基、羧基或腈基相连的化合物。也不适用于含有无机盐特别是卤化物或水分超过0.2％(m/m)的试样。