Chemical storage compatibility: keep acids, bases and solvents apart
Simple segregation rules for small labs and workshops - so a spill or vapour mix does not become an incident.
Most storage incidents come from putting incompatible chemicals next to each other. Segregate by hazard family, keep containers sealed, and follow the SDS.
Core segregation rules
- Acids away from bases - never store strong acids next to caustic soda or ammonia.
- Oxidizers away from flammables - oxidisers can intensify fires.
- Flammable solvents in a dedicated flammables cabinet, away from ignition sources.
- Water-reactive materials away from sinks and aqueous solutions.
- Food / cosmetic ingredients stored separately from industrial reagents when possible to avoid cross-contamination.
Practical checklist
- Keep originals labelled with name, hazard, and date received.
- Secondary containment trays for liquids.
- Do not store chemicals in fume hoods long-term (blocks airflow).
- Review inventory quarterly - dispose of expired stock per SDS and local rules.
More: GHS symbols, chemical safety, and Document Center.
Frequently asked questions
Can I store acids and solvents in the same cabinet?
Only if they are compatible and the cabinet is designed for it. Prefer separate cabinets for mineral acids and flammable solvents.
How should I store sodium hydroxide?
Sealed, dry, away from acids and moisture. See our sodium hydroxide safety guide for soap makers.
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