青青青在线视频国产,亚洲熟妇无码一区二区三区,亚洲国产精品无码久久98,竹菊影视欧美日韩一区二区三区四区五区

SZSE:002741
Chemical Reagents
Lead(Ⅱ) oxide yellowCOA Report
  • CAS No.:1317-36-8
  • Molecular weight:223.19
  • Aliases:Lead(Ⅱ) oxide
  • Molecular formula:PbO
  • UN Code:2291
  • EC No.:215-267-0
  • HS-No:28241000
Information
Specification category:
Product No. Product name specifications
1.05501.016 Lead(Ⅱ) oxide yellow AR500g
Characteristic: Appearance and properties: Yellow or reddish yellow powder/tiny flaky crysta,change color in the light.
Relative density: 9.53(water=1)(20℃)
Melting point(℃): 888
Boiling point(℃):1470
Concentration/content: Industrial grade,first grade≥99.3%; second grade≥99.0%.
Solubility: Insoluble in water and ethanol.Soluble in nitric acid,acetic acid and hot alkaline solution.
Technical indicators:
Item AR CP
Assay[Pb(NO3)2] ≥99.0% ≥98.0%
Clarity of solution Pass Pass
Insoluble matter in acetic acid ≤0.03% ≤0.1%
Chloride(Cl) ≤0.003% ≤0.01%
Nitrate(NO3) ≤0.002% ≤0.005%
Iron(Fe) ≤0.001% ≤0.005%
Copper(Cu) ≤0.002% ≤0.005%
Not precipitate by H2S(as SO4) ≤0.2% ≤0.4%
Hazard characteristics:

IATA-DGR UN 2291 LEAD COMPOUND,SOLUBLE,N.O.S.,6.1,Ⅲ

Related Products

Copyright ? Guangdong?Guanghua?Sci-Tech?Co.,?Ltd. GuangDong ICP No. 14033791-1
美女视频黄是免费| 极品少妇小泬50pthepon| 我把护士日出水了视频90分钟| 真实国产老熟女无套中出| 免费无码又爽又刺激高潮的视频 | 成年免费视频黄网站zxgk| 被黑人猛躁10次高潮视频| 亚洲国产精品sss在线观看av| 日韩av高清在线观看| 狠狠色噜噜狠狠狠狠97首创麻豆| 国产成人无码一区二区三区| 精品少妇人妻av免费久久洗澡| 亚洲看片lutube在线观看| 少妇性俱乐部纵欲狂欢少妇| 鲁大师影院在线观看| 国产欧美日韩va另类在线播放| 久久久久99精品国产片| 啦啦啦www播放日本观看| 国产玉足榨精视频在线观看| 四虎影成人精品a片| 精品无码人妻一区二区三区| 亚洲午夜精品久久久久久浪潮| 开心五月激情综合婷婷| 男人和女人做爽爽免费视频 | 欧美日韩不卡合集视频| 国产98色在线 | 日韩| 亚洲免费网站观看视频| 国产后入清纯学生妹| 国产精品成人久久久久久久| 欧美性猛交99久久久久99按摩| 国产女人乱人伦精品一区二区| 把腿张开老子臊烂你多p视频| 国产真实夫妇交换视频| 亚洲一区自拍高清亚洲精品| 人人妻人人澡人人爽人人精品浪潮| 成人午夜视频精品一区| 久久综合亚洲色一区二区三区| 亚洲成av人片一区二区三区| 天堂久久天堂av色综合| 无遮高潮国产免费观看| 欧美牲交40_50a欧美牲交aⅴ|