Flammable Liquid Storage

Storage of flammable liquids must occur in either the original container from the manufacturer, or in approved containers as illustrated in Table 2 of this fact sheet.

"Flammable liquid" means any liquid having a flashpoint at or below 199.4°F (93°C). Flammable liquids are divided into four categories as follows:

Table 1: Flammable Liquids
Category Criteria
1 Flash point < 23°C and initial boiling point ≤ 35°C (95°F)
2 Flash point < 23°C and initial boiling point > 35°C (95°F)
3 Flash point ≥ 23°C and ≤ 60°C (140°F)
4 Flash point ≥ 60°C (140°F) and ≤ 93°C (200°F)

When liquid with a flashpoint greater than 199.4°F (93°C) is heated for use to within 30°F (16.7°C) of its flashpoint, it shall be handled in accordance with the requirements for a Category 4 flammable liquid.

Table 2: Maximum Capacity of Containers for Flammable Liquids
Container Type Flammable Liquid Category 1 Flammable Liquid Category 2 Flammable Liquid Category 3 Flammable Liquid Category 4
Glass or approved plastic* 1 pt 1 qt 1 gal 1 gal
Metal 1 gal 5 gal 5 gal 5 gal
Safety Cans 2 gal 5 gal 5 gal 5 gal

*Approved means approved or listed by either Underwriter's Laboratories or Factory Mutual Engineering Corporation.

Storage Cabinets: "Maximum capacity." Not more than 60 gallons of Category 1, 2, or 3 flammable liquids, nor more than 120 gallons of Category 4 flammable liquids may be stored in a storage cabinet.