Of this total, no more than 60 gallons may be Class I and II liquids, combined. Separate liquids from solids. In order to provide proper housekeeping and to avoid possible breakage and spills, all chemicals should be kept off the floor. Large heavy containers should be stored on lower shelves. This is to prevent containers from accidentally falling or being pushed off shelves.
Chemicals are to be stored away from sunlight, heat, or ignition sources.
Containers of materials that may become hazardous upon prolonged storage, such as ether and peroxide formers, should be dated when first opened. At the end of six months the material is to be evaluated or tested for continued safe use. Material found to be safe may be redated and retained for an additional six months. Others shall be properly disposed of. Picric, if dry, must remain dry and, if wet, must remain wet.