P NITROPHENOL INDICATOR AR
Nitrophenol is used to manufacture drugs, fungicides, insecticides, and dyes and to darken leather.
Acute (short-term) inhalation or ingestion of 4-nitrophenol in humans causes headaches, drowsiness, nausea,
and cyanosis (blue color in lips, ears, and fingernails). Contact with eyes causes irritation in humans.
N 1887 (OTTO) p-Nitrophenol, GR 99%+ Cas 100-02-7 - used as a pH indicator. A solution of 4-nitrophenol appears colorless below pH 5.4 and yellow above pH 7.5.
Engineered nanoparticles (ENPs) have been widely developed in various fields in recent years, resulting in an increasing occurrence of nanoparticles in the natural environment. However, the tiny substances have created unexpected confusion in environmental sample testing due to the negative nanoeffect of ENPs.