Incompatible materials,

Definition of Incompatible materials:

1. Substances that should not be stored near each other because any contact between them would cause a dangerous reaction leading to a ■■■■■■■■■, fire, or production of hazardous new substances. For example, kerosene ignites spontaneously when it comes in contact with unsymmetrical dimethyl hydrazine, and a contact between iron and sulfuric acid produces a flammable gas (hydrogen).