午夜福利成人精品视频,国产情侣露脸精品视频,国产成人国产在线播放,久久综合久久狠狠激情,91在线国产精品麻豆,国产精品午夜免费福利,四虎免费在线观看视频,亚洲av激情综合国产,激情五月开心五月麻豆,亚洲激情午夜av在线

  • <tr id="eqequ"></tr>
  • <samp id="eqequ"><pre id="eqequ"></pre></samp>
  • <samp id="eqequ"><tbody id="eqequ"></tbody></samp><kbd id="eqequ"></kbd>
    <samp id="eqequ"><tbody id="eqequ"></tbody></samp>
    
  • <kbd id="eqequ"></kbd>
    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

    Formamide(FA)

    Molecular Formula HCONH2
    Molecular Weight 45.041
    Properties Clear,colorless liquid and with ammonia-like-weak odor m.p.2.55°C,b.p.210-212°C (partial decomposition beginning at 180°C),flash point 154°C , Specific gravity 1.1334(20°C). Be soluble in water and alcohol,slightly soluble in benzene and ether,etc,hygroscopic.
    Uses Formamide is the material to synthesize pharmaceuticals,spicery and dyestuffs.It is used as solvent in synthetic fiber spinning,plastic processing and lignin ink production etc,as paper treating agent,coagulation accelerator in oil well drilling and building industry,as carburant in casting industry,glue softener and as polar solvent in organic synthesis.
    Packing and storage 200L plastic drums or steel-plastic composite drums. Tightly closed to prevent from leaking and touching water. Stored in cool,ventilated and dry places,far from fire and heat source.
    Specifications Q/320412 XY204-2008 

    Index name

    Top-grade

    First grade

    Appearance

    colorless transparent liquid without visible impurities

     

    Assay, % ≥

    99.5

    99.0

    Methanol, % ≤

    0.15

    0.30

    Chroma, (Pt-Co)# : ≤

    10

    20

    Moisture, % ≤

    0.050

    0.10

    Fe, ppm ≤

    0.20

    -

    Ammonia, % ≤

    0.010

    0.020

    Formic acid, % ≤

    0.010

    0.020

    Ammonium formate , % ≤

    0.08

    0.10

    Back

    Copyright(C)2017,Suqian Xinya Technology Co., Ltd. All Rights Reserved. Supported by ChinaChemNet ChemNet Toocle Copyright Notice
    亚洲成熟丰满一区二区三区| 日韩人妻av一区二区| 亚洲国产综合另类天堂| 精品亚洲国产成人在线| 日韩熟女av在线观看| 欧美最猛黑人xxxx黑人猛交98| 无套内射免费在线观看| 国产成人久久精品二区三区| 成人午夜免费在线视频| 亚洲精品成人a在线观看| 高潮流白浆潮喷在线播放视频| 久久99热这里只有精| 欧美一区二区三区站| 亚洲精品美女久久久久高潮| 国产丰满美女a级毛片| 亚洲精品国产成人性色| 国产成人黄色自拍视频网站| 一本一道波多野结衣av黑人| 欧美亚洲国产成人一区二区三区| 欧美老熟妇xb水多毛多| 久久精品国产97国产精| 免费播放很黄很色毛片| 男女激情久久久国产| 黄色av片在线免费观看| 起碰免费公开97在线视频| 九九视频在线观看视频| 亚洲一区日韩一区二区| 神马午夜福利国产一区| 免费看撕开奶罩揉吮奶头视频| 国产精品国产三级国产成人| 久久精品国产亚洲一区二区| 精品国产亚洲av蜜臀| 视频一区二区日韩欧美| 四虎成人精品在线观看| 不卡视频一区二区日韩| 四虎免费在线播放视频| 亚洲中文av一区二区三区| 久久久久女教师免费一区| 91精品国产综合久久久久久激情图区| 波多野结衣美乳人妻hd电影欧美| 中文字幕无码一区二区免费|