成人网站免费观看,99e久热只有精品8在线直播,亚洲综合无码明星蕉在线视频,亚洲精品一区二区三区中文字幕

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
国内揄拍国内精品人妻| 日韩欧美高清dvd碟片| 午夜一区二区亚洲福利vr| 激情无码人妻又粗又大| 日产精品久久久一区二区| 人人澡超碰碰97碰碰碰| 亚洲www永久成人网站 | 男女无遮挡猛进猛出免费视频国产 | 国语自产精品视频在线看| 天美传媒精品1区2区3区| 麻豆国产精品va在线观看不卡| 免费午夜爽爽爽www视频十八禁| 免费观看又色又爽又黄的| 国产成人 综合 亚洲欧洲| 浪潮av激情高潮国产精品| 97久久超碰国产精品…| av人摸人人人澡人人超碰手机版| 中文字幕无码日韩中文字幕| 午夜在线a亚洲v天堂网2018| 欧美日韩一区二区综合| 国产免费又色又爽又黄的小说| 欧美亚洲日韩不卡在线在线观看| 精品国产第一国产综合精品| 在线a视频网站| 中文成人无字幕乱码精品区| 国产剧情福利av一区二区| 久久国产精品-国产精品| 一区二区在线 | 欧洲| 伊人久久精品av一区二区| 成人18禁深夜福利网站app免费| 夜夜春夜夜爽| 无码一区二区免费波多野播放搜索| 亚洲va在线∨a天堂va欧美va| 青青草原亚洲| 高清无码一区| xxxxx欧美| 国产一区二区三区在线2021| 色综合久久无码中文字幕| 久久久久中文伊人久久久| 国产人妻777人伦精品hd| 另类重口特殊av无码|