久久99精品久久久久久hb亚瑟-免费看无码毛视频成片-99热这里只有精品免费播放-亚洲精品少妇高清30p-国产午夜福利精品久久2021

SZSE:002741
Chemical Reagents
  • CAS No.:57-13-6
  • Molecular weight:60.06
  • Aliases:carbamide;ureophil
  • Molecular formula:CH4N2O
  • EC No.:200-315-5
  • HS-No:31021010
Information
Specification category:
Product No. Product name specifications
1.20601.010 Urea AR500g
1.20601.020 Urea AR5kg×6
1.20601.030 Urea CP500g
1.20601.040 Urea CP25kg
1.20601.050 Urea AR25kg
1.20601.090 Urea AR4200g/Sack
1.20601.100 Urea AR25kg
1.20601.100 Urea AR25KG
1.20601.110 Urea AR25kg
Characteristic: Appearance and properties: white crystal or powder, the smell of ammonia.
Relative density: 1.335
Melting point(℃): 132.7
Boiling point(℃): (decomposition)
Solubility: soluble in water, methanol, ethanol, slightly soluble in ether, chloroform, benzene.
Heat of combustion (kJ / mol): meaningless
Technical indicators:
Item AR CP
Assay (H2NCONH2) ≥99.0% ≥99.0%
Clarity of solution ≤2 ≤4
Insoluble matter in water ≤0.005% ≤0.02%
Residue on ignition(as SO4) ≤0.01% ≤0.02%
Chloride(Cl) ≤0.0003% ≤0.001%
Sulfate(SO4) ≤0.001% ≤0.005%
Ammonia(NH3) ≤0.005% ≤0.005%
Iron(Fe) ≤0.0002% ≤0.0005%
Heavy metals(as Pb) ≤0.0002% ≤0.0005%
Biuret(C2H5N3O2) ≤0.2% ≤0.4%
Related Products

Copyright ? Guangdong?Guanghua?Sci-Tech?Co.,?Ltd. GuangDong ICP No. 14033791-1
主站蜘蛛池模板: 99久热在线精品视频观看| 亚洲伊人丝袜精品久久| 高清破外女出血av毛片| 欧美日韩综合一区二区三区| 国产xxxx做受性欧美88| 狠狠综合久久久久综合网| 亚洲成a×人片在线观看| 少妇人妻偷人精品视频1出轨| 日韩欧美亚洲综合久久| 国产狂喷潮在线观看中文 | 国产一性一交一伦一a片| 亚洲精品久久久久久成人| 狠狠色丁香久久婷婷综| 国产在线无码一区二区三区| 亚洲一区二区经典在线播放| 一区二区三区四区在线不卡高清| 国产又爽又黄又不遮挡视频| 欧美中文字幕无线码视频| 日本高清视频www| 免费无码av一区二区| 久久久久99精品成人片三人毛片| 99久久精品国产第一页| 舌头伸进去搅动好爽视频| 亚洲欧洲av无码电影在线观看| 自拍偷自拍亚洲精品第1页| 真人性囗交69视频| 欧美激情精品久久| 色老久久精品偷偷鲁| 国产精品久久久久不卡无毒| 欧美性大战久久久久久久| 亚洲日韩一区二区| 色吊丝av中文字幕| 亚洲成a人无码| 中文字幕亚洲综合久久菠萝蜜 | 中文无码字幕一区到五区免费| 国产精品刮毛| 日韩人妻无码精品—专区| 人妻精品丝袜一区二区无码av | 亚洲夜夜性无码| 久热爱精品视频在线9| 成年无码av片完整版|