亚洲国产黄色成年人_亚洲中文字幕码在线电影_免费女人18毛片a级视频在线_337p人体大胆扒开下部

Ammonium bromide
 
  SH No.: Ammonium bromide
  Name:Ammonium bromide
  CAS No.:12124-97-9
  format:
  Molecular formula:NH4Br
  Character: White crystalline powder, soluble in water.
 
  [Use]Used for analytical reagent, for the production of photographic film sensitive emulsion, developer, as wood preservative for wood, water treatment and flame retardant auxiliary.
[Packin