夜夜爽夜夜叫夜夜高潮漏水,久久久精品无码视频,网友分享国产一区二区三区,亚洲精品无码久久av字幕

Recommended Products
75-12-7
123-39-7
107-31-3
124-40-3
75-50-3
647-45-2
617-84-5
74-89-5
68-12-2
Products

Di-methylformamide(DMF)

Molecular Formula HCON(CH3)2
Molecular Weight 73.09
Properties colorless transparent inflammable liquid with slight ammonia odor .m.p.-61°C, b.p.152.8°C, flash point 57.7°C, refractive index 1.427-1.429,density (20°C) 0.9487g/ml,miscible with water,ether,ester,ketone,chlorinated hydrocarbon and benzene hydrocarbon,hygroscopic.
Uses DMF is an important organic material and good solvent.It is used as solvent for man-made leather and chemical fiber,also used as material for synthesis of insecticide of high-effectiveness and low-toxicity,as gas absorbent to separate and purify the gas in petrochemical industry,as material of sulfadiazine,cortisone and Vitamin B6 in pharmaceutical industry,and also as fixing agent in vapor-phase analysis.
Packing and storage 200L plastic drums or plastic coated metal pail. Tightly closed to store,prevent from leaking,avoid rain,sunlight,strictly forbid striking and rubbing,far from fire and heat source,stored in cool and ventilating places.
Specifications Q/320412 XY201-2004 

Index name

First grade

Qualified product

Appearance

colorless transparent liquid without visible impurities

Di-methylformamide(DMF)

99.8

99.5

Methanol mg/kg ≤

50

100

Chroma, (Pt-Co)# : ≤

5

10

Refractive index n25D

1.427-1.429

 

Moisture, % ≤

0.05

0.10

Formic acid mg/kg ≤

30

50

Dimethyl amine mg/kg ≤

15

30

PH (20% solution)

6.5-8.0

6.5-9.0

Fe mg/kg ≤

0.05

-

Back

Copyright(C)2017,Suqian Xinya Technology Co., Ltd. All Rights Reserved. Supported by ChinaChemNet ChemNet Toocle Copyright Notice
亚洲午夜成aⅴ人片| 99国产精品一区| 国产成人免费在线观看粉嫩av| 91久久精品国产性色也91久久| 光泽县| 欧美三级黄片| 88久久精品二区| AV男女网站| 无码午夜福利| 亚洲国产成人无码网站大全| 福利看片| 性色AV网站| 欧美日韩一区二区在线| 狠狠干夜夜操| 日韩不卡高清视频| 公的大龟慢慢挺进我的体内视频| 五月天一区二区三区| 91精品工厂| 国精品午夜福利视频不卡757| 无码人妻精品一二三区免费| 日韩午夜影院| 亚洲七久久之综合七久久| 99国产精品久久久久| 亚洲色图久久久久久久| 黄色av免费看| 欧洲精品乱码久久久久第1集| 欧美男男大粗吊1069| 成人在线天堂| 吉木乃县| 模特av电影在线| 国产张开腿插| 久久成人网| 可以在线观看的,你懂的| 亚洲天堂AV一区二区三区| 国产乱码精品一区二区三区亚洲人| 最新亚洲AV中文网| 香蕉久久短视频AA网| 香人超碰| 成人乱人乱一区二区三区| 久久久久久九九九九九九九久‘’| 亚洲激情欧美精品|