Kim Kihyun,Kim Sooyeon,Park JungDae,Suh Min Soo,Lee Hyang Bong,Lim Kwangshin
申请号：
US201615393731
公开号：
US2017219538(A1)
申请日:
2016.12.29
申请国别(地区):
美国
年份:
2017
代理人:
摘要：
Provided is a method for detecting impurities in ammonium hydroxide. The method for detecting impurities in ammonium hydroxide includes preparing a potassium permanganate solution, preparing ammonium hydroxide, and adding the potassium permanganate solution several times to the ammonium hydroxide so as to detect impurities in the ammonium hydroxide. Potassium permanganate contained in the potassium permanganate solution is added for each time in the range of 0.0001 mol to 0.01 mol per 1 g of ammonia contained in the ammonium hydroxide.
