| Common inorganic acids, such as hydrochloric or phosphoric acid | Corrosion-resistant cabinet made from a compatible polymer, or a purpose-built acid cabinet with a corrosion-resistant interior and finish. | Check the cabinet, shelves, hinges, and spill tray against the specific acid and its concentration. Choose a cabinet with stable, chemical-resistant shelving and a leak-resistant base or removable sump. | Place in a designated, accessible area away from heat and incompatible chemicals. Keep containers upright, closed, and in secondary containment where appropriate. | Inspect for corrosion, cracks, leaks, damaged coatings, and residue. Clean spills using the site’s approved procedure and replace damaged components. |
| Hydrofluoric acid (HF) | A cabinet and containment system specifically confirmed as compatible with the HF concentration being stored. | Do not assume that a material suitable for other acids is suitable for HF. Glass is not appropriate for HF storage; verify compatibility for the cabinet, container, tray, and fittings using the safety data sheet (SDS) and manufacturer information. | Store in a clearly identified, restricted-access location with appropriate secondary containment. Keep HF separate from incompatible chemicals and follow facility emergency-planning requirements. | Check containers and containment frequently for damage or leakage. Ensure required spill-response supplies and emergency information are available to trained personnel. |
| Nitric acid and other oxidizing acids | A dedicated, compatible cabinet or segregated storage area selected for the particular oxidizing acid. | Confirm compatibility with the acid’s concentration and oxidizing properties. Keep oxidizing acids separate from organic materials, solvents, reducing agents, and other incompatible substances. | Use separate, clearly labeled containment. Do not store with organic acids or combustible materials unless a documented compatibility assessment allows it. | Check labels, closures, and containment for deterioration or contamination. Remove incompatible materials immediately and review segregation when inventory changes. |
| Perchloric acid or other acids requiring specialized controls | Specialized storage determined by the facility’s environmental health and safety (EHS) personnel; a standard acid cabinet may not be suitable. | Assess the acid’s concentration, use, and potential hazards before selecting storage. Perchloric acid work and storage can require dedicated facilities and controls; consult the SDS, local requirements, and EHS guidance. | Do not install or modify ventilation or storage arrangements without an approved design. Follow facility-specific restrictions and keep the material segregated as directed. | Use the inspection schedule and procedures specified by EHS and the facility design. Document inspections, incidents, and corrective actions. |
| Small quantities or limited available space | Compact, purpose-built acid cabinet with compatible materials and a containment base, sized for the actual inventory. | Prioritize chemical compatibility, secure closures, clear labeling, and sufficient capacity for containers and secondary containment. Avoid selecting by external dimensions alone. | Place where containers can be handled without lifting over shoulder height or blocking exits, eyewash stations, or walkways. Anchor or secure the cabinet if required by its instructions or local risk assessment. | Keep an up-to-date inventory, remove expired or unneeded chemicals through approved disposal channels, and verify that doors and latches operate properly. |
| Any acid cabinet: ventilation decision | Vented only when required by the product instructions, facility assessment, or applicable regulations; otherwise use the cabinet as designed. | Ventilation requirements depend on the chemicals and local rules. Unapproved ducting or modifications can reduce containment performance and should not be improvised. | Have any ventilation system designed and installed by qualified personnel. Confirm the arrangement with EHS before connecting or changing ductwork. | Inspect approved ventilation components as specified by the facility. Keep vents unobstructed and document maintenance or airflow checks when required. |
| Selection note: There is no single cabinet material or design suitable for every acid. Before purchase or installation, check the SDS, concentration, container material, cabinet compatibility information, applicable local requirements, and facility EHS guidance. Store acids separately from incompatible chemicals and use the cabinet according to its manufacturer’s instructions. |