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
Lead(Ⅱ) oxide yellow COA 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
主站蜘蛛池模板: 最新精品国偷自产在线美女足 | 国产女主播白浆在线看| 国产精品国产成人国产三级| 无码人妻久久久一区二区三区| 777亚洲熟妇自拍无码区| 欧美va亚洲va在线观看日本| 日本无遮挡边做边爱边摸| 亚洲色无码中文字幕| 无码午夜福利片| 久久久久av无码免费网| 色窝窝免费播放视频在线| 1313午夜精品理论片| 久久综合网欧美色妞网| 51久久夜色精品国产水果派解说| 国产精品无码素人福利| 久久亚洲美女精品国产精品| 日本巨大的奶头在线观看| 国产精品无码专区第一页| 口爆吞精一区二区久久| 亚洲日本欧美日韩高观看| 午夜成人无码福利免费视频| 国产精品国产三级国产av′| 欧美大片aaaaa免费观看| 国产成人欧美一区二区三区| 一本久久a精品一区二区| 大香伊蕉国产av| 人妻蜜桃久久AV一区| 国产老妇伦国产熟女老妇高清| 综合成人亚洲网友偷自拍| www国产亚洲精品| 欧美牲交a欧美牲交aⅴ久久| 国产精品无码一区二区桃花视频| 2021国产精品香蕉在线观看| 国产精品盗摄!偷窥盗摄| 无码视频在线播放| 99久热国产精品视频尤物| 天天躁日日躁狠狠躁av麻豆| 成人国产精品??电影| 欧美va天堂在线电影| 明星性猛交ⅹxxx乱大交| 久久婷婷五月综合色欧美蜜芽|