漂亮人妻裸睡被公侵犯电影,精品国产品国语在线不卡,日本国产三级在线视频,我和大乳老师做在线观看,91人妻人人澡人人爽人_久久午夜伦鲁片免费无码_日韩精品免费一区二区中文字幕_不让我断奶他天早上要吃奶_青面修罗在线观看_亚洲国产精华液2020

Detail

1,1-dichloroethylene

Product name: 1,1-dichloroethylene /VDC

Application: As the raw material of a substitute for the 141b and 142b fluorine refrigerant, also as raw material for chlorine partial coating and flame retardant nitrile chloride polyester fiber , and as raw material for polyvinylidene chloride synthesis emulsion and resin.

Packaging specification: /

Storage: should be preserved in dry and ventilated place avoid rainfall and direct sunlight
Physical property: colorless transparent liquid, insoluble in water at room temperature, a special smell, volatile, toxic. Easy to self-aggregation, easy alkaline solution, easy to combine with oxygen to generate peroxides, explosive.

Specification: 

Item

Unit

Index

Superior grade

Top grade

Qualified grade

Vinylidene chloride   ≥

%

99.90

99.60

99.50

Low boiling compound      ≤

%

0.04

0.08

0.12

High boiling compound     ≤

%

0.15

0.30

0.35

Moisture          ≤

mg/kg

100

250

300

PH    ≥

-

4.0

-

-


【Return】【Add To Cart】