The following is from NFPA 30, 2003 Flammable & Combustible Liquids Code.
18.104.22.168 Flammable Liquid. Any liquid that has a closed-cup flash point below 100°F (37.8°C), as determined by the test procedures and apparatus set forth in 1.7.4. Flammable liquids are classified as Class I as follows: Class I Liquid — any liquid that has a closed-cup flash point below 100°F (37.8°C) and a Reid vapor pressure not exceeding 40 psia (2068.6 mm Hg) at 100°F (37.8°C), as determined by ASTM D 323, Standard Method of Test for Vapor Pressure of Petroleum Products (Reid Method). Class I liquids are further classified as follows: (1) Class IA liquids — those liquids that have flash points below 73°F (22.8°C) and boiling points below 100°F (37.8°C); (2) Class IB liquids — those liquids that have flash points below 73°F (22.8°C) and boiling points at or above 100°F (37.8°C); (3) Class IC liquids — those liquids that have flash points at or above 73°F (22.8°C), but below 100°F (37.8°C).
22.214.171.124 Combustible Liquid. Any liquid that has a closed-cup flash point at or above 100°F (37.8°C), as determined by the test procedures and apparatus set forth in 1.7.4. Combustible liquids are classified as Class II or Class III as follows: (1) Class II Liquid — any liquid that has a flash point at or above 100°F (37.8°C) and below 140°F (60°C); (2) Class IIIA — any liquid that has a flash point at or above 140°F (60°C), but below 200°F (93°C); (3) Class IIIB — any liquid that has a flash point at or above 200°F (93°C).
Here is what it says how much liquid you can have in your home.
6.5.3 Dwellings and Residential Buildings Containing Not More than Three Dwelling Units and Accompanying Attached and Detached Garages. Storage in excess of 95 L (25 gal) of Class I and Class II liquids combined shall be prohibited. In addition, storage in excess of 230 L (60 gal) of Class IIIA liquid shall be prohibited.
So you have a fire, your insurance company MAY not pay the claim based on the above. IF it is code in your town and IF the local FD in the fire investigations sites you for this violation.
Try to store flammables in metal safety cans like this
The can will open and relieve pressure and not explode. IF you must store inside then you can store the liquids in this per code.
6.3 Design, Construction, and Capacity of Storage Cabinets.
(3) Wooden cabinets constructed in the following manner shall be aceppable:
(a) The bottom, sides, and top shall be constructed of exterior grade plywood that is at least 25 mm (1 in.) thick and of a type that will not break down or delaminate under fire conditions.
(b) All joints shall be rabbetted and shall be fastened in two directions with wood screws. Where more than one door is used, there shall be a rabbetted overlap of not less than 25 mm (1 in.).
(c) Doors shall be equipped with a means of latching and hinges shall be constructed and mounted in such a manner as to not lose their holding capacity when subjected to fire exposure.
(d) A raised sill or pan capable of containing a 50 mm (2 in.) depth of liquid shall be provided at the bottom of the cabinet to retain spilled liquid within the cabinet.
6.3.5 Storage cabinets shall be marked in conspicuous lettering:
FLAMMABLE — KEEP FIRE AWAY.