Molecular formula :
nature : Usually hydrochloride and sodium nitrite (or acid), or nitrosyl chloride (NOCl) and pyridine, or N2O3 or will N2O4 other substrate in the low temperature to room temperature for Nitrosation Preparation. Most of the toxic, irritant, carcinogenic liquid or solid. Some close to the boiling point of melting when there was a fierce decomposition, and even bombings. Few operators should pay attention to protection, not to touch on the skin.
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