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Chemical Compatibility Matrix | Safe Storage

Check chemical compatibility for safe storage and segregation. EPA-based matrix. Prevent fires, gas generation, and OSHA 1910.176(c) citations.

Instantly generate audit-proof OSHA documentation and calculate 2026 compliance risks without login. Protect your job site from $16,550+ citations and ensure GHS Rev 7 readiness with this free, construction-grade safety utility.

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What is this tool?

The Chemical Storage Compatibility Matrix is a digital segregation engine based on EPA-600/2-80-076 guidelines and OSHA 1910.176 requirements. It identifies dangerous combinations—such as storing oxidizers with flammables or acids with cyanides—that could lead to toxic gas generation, fires, or explosions in your chemical storage area, ensuring facility safety beyond simple SDS compliance.

OSHA requirement

29 CFR 1910.176(c) explicitly prohibits storing incompatible materials together where they could create a hazard. Furthermore, OSHA 1910.1200 requires information on incompatible materials in SDS Section 7 (Handling and Storage) and Section 10 (Stability and Reactivity). Violations of segregation protocols are frequently cited during physical facility inspections.

How to use it

Select two or more chemical classes (e.g., 'Nitric Acid' and 'Organic Solvents') from the inventory list. The matrix cross-references reactivity groups to check for incompatibility codes (Heat, Fire, Gas Generation) and advises on required physical segregation distances or secondary containment needs to prevent catastrophic reactions.

How to Check Chemical Storage Compatibility

  1. Select Group A: Choose the first hazard group (e.g., Mineral Acids, Organic Solvents, Oxidizers).
  2. Select Group B: Choose the second hazard group to check against.
  3. Review the compatibility code: See the result: OK (compatible), H (heat/violent reaction), F (fire hazard), or G (toxic gas generation).

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