Incidents exploding, bottle

Vacuum distilled material kept dark for 6 months was found to have largely polymerised to a yellow solid, which exploded 15 days later [1], A bottle of uninhibited distilled material exploded after shelf storage for several months [2], It may be stored for several months out of contact with air under refrigeration. In contact with ambient air, it polymerises slowly, but rapidly in contact with acidic materials [3], See Other CYANO COMPOUNDS, POLYMERISATION INCIDENTS... 

A closed bottle of unused potassium dichromate-sulfuric acid mixture exploded after several months in storage [1]. Previous similar incidents were summarised, and the possibility of the bottle having burst from internal pressure of carbon dioxide arising from trace contamination by carbon compounds was advanced [1,2], Two further reports of incidents within 1 or 2 days of preparation of... 

The tetrone slowly decomposes dining storage at ambient temperature with generation of carbon dioxide. Two separate pairs of incidents involving bursting of bottles [1], and of pressure generation [2,3], were reported. It also explodes at temperatures above 170°C [4],... 

It is not uncommon for an old bottle of picric acid to be discovered in a dry state—this is a dangerous occurrence and requires attention from emergency personnel and probably the local bomb squad. There are many incidents involving dried out picric acid within university settings. One report described the removal of several bottles of picric acid using a bomb squad robot and as the last bottle of picric acid was placed in the bomb container, it exploded, producing a crater. ... 

---