. . . "The procedure for testing solid materials appears in 16 CFR 1500.44, while 16 CFR 1500.45 and 46 specify the procedures to use to test the contents of self-pressurized containers. (6) Products that generate pressure, through decomposition, heat, or other means include aerosols, fireworks that contain explosive powder, and certain pool chemicals that, when their containers are heated by sunlight, f" . .