中文字幕亚洲第一页在线,亚洲国产日韩欧美高清片a,亚洲一区二区三区av在线免费,日本不卡在线一区二区,亚洲av不卡电影在线网址最新 ,少妇被爽到自拍高潮在线观看,av无码一区二区三,人妻一区二区三区蜜桃
    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
    主站蜘蛛池模板: 少妇bbwbbw高潮| 精品国产一区二区色老头| 亚洲色欲色欲www成人网| 丁香九月综合激情| 亚洲一区二区高清在线| 延津县| 成在线人免费视频播放| 久久一级国产黄色精品| 精品熟妇av一区二区三区四区| 国产精品女同学| 故城县| av无码特黄一级| 金坛市| 武义县| 亚洲国产字幕| 日日骚一区二区三区中文字幕| 九寨沟县| 新邵县| 亚洲人成网站在线播放小说| 九江市| 插入中文字幕在线一区二区三区| 朝阳市| 亚洲免费不卡av网站| 山阴县| 久久青青草视频免费观看| 精品人妻av一区二区三区不卡| 亚洲区福利视频免费看| 国产日韩一区二区精品| 国产精品毛片99久久久久| 在线观看中文字幕一区二区三区| 国产福利美女小视频| 少妇被爽到自拍高潮在线观看| 精品国产v一区二区三区| 日韩av一区二区三区四区av| 亚洲女同精品久久女同| 香蕉久久av一区二区三区| 视频女同久久久一区二区三区| 青青青国产免A在线观看| 99久久亚洲国产高清观看| 国产真实伦视频在线视频| AV无码系列一区二区三区|