2544

LAWS OF MARYLAND

Ch. 463

(1)(I) IS A GAS OR A MIXTURE OF GASES HAVING, IN A
CONTAINER, AN ABSOLUTE PRESSURE EXCEEDING 40 PSI AT 70 DEGREES
FAHRENHEIT;

(2)(II) IS A GAS OR A MIXTURE OF GASES HAVING, IN A
CONTAINER, AN ABSOLUTE PRESSURE EXCEEDING 104 PSI AT 130 DEGREES
FAHRENHEIT, REGARDLESS OF THE PRESSURE AT 70 DEGREES FAHRENHEIT;
OR

(3)(III) IS A LIQUID HAVING A VAPOR PRESSURE
EXCEEDING 40 PSI AT 100 DEGREES FAHRENHEIT, AS DETERMINED BY ASTM
D-323-72 . ;

(D)(3) AN EXPLOSIVE CHEMICAL WHICH CAUSES A SUDDEN, ALMOST
INSTANTANEOUS RELEASE OF PRESSURE, GAS, AND HEAT WHEN SUBJECTED
TO SUDDEN SHOCK, PRESSURE OR HIGH TEMPERATURE;

(E)(4) A FLAMMABLE CHEMICAL THAT FALLS INTO ONE OF THE
FOLLOWING CATEGORIES:

(1)(I) A FLAMMABLE AEROSOL THAT, WHEN TESTED BY THE
METHOD DESCRIBED IN 16 CFR 1600.45, YIELDS A FLAME PROJECTION
EXCEEDING 18 INCHES AT FULL VALVE OPENING, OR A FLASHBACK (A
FLAME EXTENDING BACK TO THE VALVE) AT ANY DEGREE OF VALVE
OPENING;

(2)(II) A FLAMMABLE GAS THAT:

(I)1. AT AMBIENT TEMPERATURE AND PRESSURE,
FORMS A FLAMMABLE MIXTURE WITH AIR AT A CONCENTRATION OF 13
PERCENT BY VOLUME OR LESS; OR

(II) 2. AT AMBIENT TEMPERATURE AND PRESSURE,
FORMS A RANGE OF FLAMMABLE MIXTURES. WITH AIR WIDER THAN 12
PERCENT BY VOLUME, REGARDLESS OF THE LOWER LIMIT; OR

(III) 3. GASEOUS AMMONIA;

(3)(III) EXCEPT ANY MIXTURE HAVING COMPONENTS WITH
FLASH POINTS OF 100 DEGREES FAHRENHEIT OR HIGHER, THE TOTAL OF
WHICH MAKE UP 99 PERCENT OR MORE OF THE TOTAL VOLUME OF THE
MIXTURE, A FLAMMABLE LIQUID HAVING A FLASH POINT BELOW 100
DEGREES FAHRENHEIT; OR

(4)(IV) A FLAMMABLE SOLID THAT IS LIABLE TO CAUSE
FIRE THROUGH FRICTION, ABSORPTION OF MOISTURE, SPONTANEOUS
CHEMICAL CHANGE, OR RETAINED HEAT FROM MANUFACTURING OR
PROCESSING, OR WHICH CAN BE IGNITED READILY AND WHEN IGNITED
BURNS SO VIGOROUSLY AND PERSISTENTLY AS TO CREATE A SERIOUS
HAZARD. A CHEMICAL SHALL BE CONSIDERED TO BE A FLAMMABLE SOLID,
IF, WHEN TESTED BY THE METHOD DESCRIBED IN 16 CFR 1500.44, IT
IGNITES AND BURNS WITH A SELF-SUSTAINED FLAME AT A RATE GREATER
THAN ONE-TENTH OF AN INCH PER SECOND ALONG ITS MAJOR ACCESS.
AXIS;