Glossary / Storage & containers
Chemical segregation
Chemical segregation is the practice of storing incompatible chemicals separately so that accidental contact, through a leak, spill or fire, cannot produce a dangerous reaction. It is based on hazard groups and on incompatibilities listed on the SDS.
Explanation
Some chemicals react violently or release toxic gas when mixed. Acids with bases, oxidizers with fuels, and water-reactive materials with water are classic examples. Segregation reduces the risk by keeping such pairs apart through distance, separate cabinets, barriers or separate rooms, instead of storing chemicals alphabetically.
A sensible approach groups chemicals by hazard class: flammables together, corrosive acids and bases in separate areas, oxidizers away from organic materials, and reactives and toxics in their own zones. The SDS helps with this. Section 7 gives storage advice, and Section 10 lists Incompatible materials and conditions to avoid. A chemical with several hazards may need extra thought, and storage should follow the most restrictive requirement.
Physical measures help. Secondary containment trays stop a leak from one container running into another. Dedicated units such as a Flammable storage cabinet or corrosive cabinet hold specific groups. Shelves should have lips, heavy items should be stored low, and containers should not be stored above eye level. Separate Oxidizer materials from flammable and combustible items.
Maintain the arrangement over time. New products need to be assigned a place before they arrive, and shelving charts help. Check that IBC tote and Drum storage follow the same logic. Segregation is a core part of fire safety and of a good chemical inventory, and it supports Spill kit planning since the cleanup agent depends on the chemical.
What to do and watch for
- Check Section 10 of each SDS for incompatible materials before assigning storage.
- Use separate trays or cabinets for acids, bases, oxidizers and flammables.
- Review storage whenever a new chemical is introduced.
Where it appears on an SDS
- Section 7: Handling and storage. Gives conditions for safe storage, including incompatible materials to keep apart.
- Section 10: Stability and reactivity. Lists incompatible materials and conditions to avoid, which drive segregation decisions.
SDS content and wording vary by supplier. This page is general reference and does not replace the current SDS for your product.