生意宝 | 全球化工网 | 韩国化工网 | ChinaChemNet·免费注册 ·用户登录 ·服务中心 
  • 中国化工网首页 >> 化工助手 >> 化学配方数据库



    配方类型: METAL TREATMENTS
    配方说明: Calcium Phosphate Scale Remover for Heat Exchangers
    配方组成: Ammonium Bifluoride/0.1-0.5
    Armohib 31/0.1
    Water/89.7
    Tergitol 15-S-9/0.1
    Citric Acid/10.0
    配制方法: circulate at room temperature or slightly warm until clean. Monitor to be sure the pH is below 2.7.
    Notes: Approximately 4 lb of citric acid are required to dissolve 1 lb of calcium phosphate or hydroxyapatite scale.
    The use of ammonium bifluoride is not recommended unless necessary to dissolve silicates.
    Citric acid is used for removal of calcium phosphate scales deposited on the walls of pipes, pumps, and heat exchangers. Citric acid will dissolve and chelate or sequester calcium and other metal ions only if the pH is held below pH 2.7. The addition of a corrosion inhibitor is recommended. Ammonium bifluoride can be added if the scale contains silicates, although ABF at elevated temperatures can be corrosive.

    返回数据库查询
    其他库:化学品法规 国家标准 化学品安全数据库(msds) 外贸常识 合同范本 报关指南 商检指南 国际区号 国家代码