性做久久久久久,国产一区二区三区成人欧美日韩在线观看 ,亚洲欧美日韩精品专区,欧美丰满少妇xxxx性

     
Nitrogen tetroxide
hgm
PDF 165344
Nitrogen tetroxide (N2O4) is a colorless gas or liquid, with a strong oxidant, toxic, and corrosive.
Product characteristics
Nitrogen tetroxide can be easily decomposed into nitrogen dioxide as reddish brown gas, which has the toxicity of nerve anesthesia.
Application instructions
Dinitrogen tetroxide is a compound of nitrogen and oxygen. It has strong oxidizing properties.
Application instructions