What Can Be Stored In A Flammable Safety Cabinet?
If your facility uses flammable liquids, simply placing containers on a shelf and hoping everyone remembers they are dangerous is not a fire safety plan. Proper flammable liquid storage is essential for workplace fire safety, OSHA compliance, and reducing chemical storage risks.
Flammable safety cabinets are designed to provide a dedicated location for storing certain flammable and combustible liquids while helping reduce the risk of fire. However, not every chemical belongs inside one. Knowing what can—and cannot—be stored in a flammable safety cabinet is essential for maintaining a safe, compliant workplace.
What Is A Flammable Safety Cabinet?
A flammable safety cabinet is a specially designed storage cabinet used to store flammable and combustible liquids. These cabinets include safety features that help protect their contents from fire and provide safer chemical storage than ordinary shelving.
They are commonly found in laboratories, manufacturing facilities, maintenance areas, garages, and other workplaces where flammable liquids are used. OSHA flammable liquid storage requirements address safety cabinets, including limits on cabinet capacity and construction requirements.
What Can Be Stored In A Flammable Safety Cabinet?
Flammable safety cabinets are primarily intended for flammable and combustible liquids that present a fire hazard. Common materials stored in a flammable liquid storage cabinet include:
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- Gasoline
- Paints and coatings
- Paint thinners
- Solvents
- Acetone
- Alcohol-based solvents
- Adhesives containing flammable solvents
- Certain cleaning chemicals
- Petroleum-based products
Flammable vs. Combustible Liquids
Understanding the difference between these categories can help determine appropriate storage.
Flammable liquids have relatively low flash points and can produce vapors that ignite readily. Examples include gasoline, acetone, and many solvents. Combustible liquids generally have higher flash points but can still present a significant fire hazard. A safety cabinet may be appropriate for both categories depending on the specific product, Safety Data Sheet (SDS), and applicable OSHA, NFPA, and local fire-code requirements.
What Should NOT Be Stored in a Flammable Safety Cabinet?
Here’s where things get important: a flammable cabinet isn’t a universal chemical storage cabinet.
Do not use a flammable cabinet as a general-purpose place to store incompatible chemicals simply because there is extra room. Materials such as acids, bases, oxidizers, and reactive chemicals may require separate chemical storage cabinets designed for their specific hazards. For example, storing oxidizers alongside flammable liquids can create a dangerous combination because oxidizers can intensify combustion.
Compressed gas cylinders also generally require their own appropriate storage and handling procedures rather than being placed inside a liquid storage cabinet. Always consult the SDS and applicable chemical storage requirements before storing any material.
How Much Can a Cabinet Hold?
Storage capacity matters, too. OSHA limits the amount of flammable and combustible liquids that can be stored in a storage cabinet. Under OSHA’s general industry requirements, no more than 60 gallons of Category 1, 2, or 3 flammable liquids—or 120 gallons of Category 4 liquids—may be stored in one cabinet. No more than three such cabinets may be located in a single storage area. Other requirements may apply depending on the facility, chemical, occupancy, and local fire code.
Tips for Safe Cabinet Storage
Once you’ve determined which chemicals belong in the cabinet, good organization is still important.
- Keep containers closed: Containers should remain securely closed when not in use
- Label everything: Every container should have appropriate identification and hazard information.
- Do not overload shelves: Leave enough room to safely place and remove containers.
- Keep incompatible chemicals separated: A flammable safety cabinet is not a substitute for chemical compatibility planning.
- Inspect containers regularly: Look for leaks, corrosion, damaged caps, or deteriorating labels.
- Keep ignition sources away: The purpose of the cabinet is to reduce fire risk—not to provide a convenient place to store chemicals near a heat source.
Choosing the Right Flammable Safety Cabinet
The right cabinet depends on the type and quantity of flammable liquids your facility stores. Consider cabinet capacity, construction, shelf configuration, door style, labeling, and applicable OSHA, NFPA, and local fire-code requirements before purchasing a flammable storage cabinet.
Flammable safety cabinets provide an important layer of protection when storing flammable and combustible liquids, but they are only effective when used correctly. Always identify the chemical, review its SDS, consider chemical compatibility, and follow applicable OSHA, NFPA, and local fire-code requirements to support workplace fire safety and compliant hazardous material storage.