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
日韩欧美中文二区| 五月婷婷色基地| 日韩欧美被操| 日韩1级a| 日韩福利一区二区| 陇南市| 天堂久久av天堂青青天堂| 久久88综合| 欧美精品色婷婷五月综合| 五月丁香婷婷亚洲综合在线| 精品tp视频| 在线亚洲AV成人无码| 欧美a精品| 五月丁香六月婷婷欧洲| 被三个男人躁一夜好爽| 国产v亚洲v天堂无码久久久| www,香蕉网| 欧美色久| 五月综合色| 久久人人妻人人爽人人爽| 日本久久| 九九九久久久| 欧美日韩后| 久久青青草原一区二区| 亚洲AV日韩AV无码污污网站 | 汝州市| 国自产精品手机在线观看视频 | 伊人玖玖综合| 中文字幕亚洲一区二区精品无码| 沧州市| av内射| 久久久久蜜桃视频| 色综合久| www黄片com| 五月婷婷网站| 久久必色| 国产精品99| 精品久久人人爽天天玩人人妻 | 久久人妻无码中文字幕| 精品a区| 国产精品看高国产精品不卡|