... Leading manufacturer, Good quality&competive price. NVP N-vinylpyrrolidone Discreption: Colorless or buff in room temperature transparent ... in obturation, photophygous, low temperature,neutral or alkalescence condition. 3. NVP is moderate poisonous, less smell,causticity to rubber and leather ... .Storage: stored in normal temperature, dry, avoid light seal preservation NVP; N-vinylpyrrolidone