Contact with acids liberates very toxic gas. Azide compounds should be flushed with large volumes of water during disposal to avoid deposits in lead or copper plumbing where explosive conditions can develop. Store at 2 to 8 C in amber glass for up to 1 week. Formaldehyde is harmful by inhalation, in contact with skin, and if swallowed. It is irritating to eyes and skin.
Exposure can cause cancer.
Possible risks of irreversible effects. Can cause sensitization by skin contact. Keep locked up and out of the reach of children. Keep away from food, drink, and animal feedingstuff. Wear suitable protective clothing and gloves.