2066                                        LAWS OF MARYLAND                                    Ch. 583

(iii) A liquid having a vapor pressure
exceeding 40 PSI at 100 degrees Fahrenheit, as determined by ASTM

D-323-72;

(3)  An explosive, meaning a chemical which causes a
sudden, almost instantaneous release of pressure, gas, and heat
when subjected to sudden shock, pressure, or high temperature;

(4)  A flammable chemical, meaning a chemical that
falls into one of the following categories:

(i) A flammable aerosol, meaning an aerosol
that, when tested by the method described in 16 CFR 1500.45,
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;

(ii) A flammable gas, meaning a gas that:

1.  At ambient temperature and pressure,
forms a flammable mixture with air at a concentration of 13
percent by volume or less; or

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;

(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, meaning a liquid having a flash
point below 100 degrees Fahrenheit; or

(iv) A flammable solid, meaning a 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 axis;

(5)  An organic peroxide, meaning an organic compound
that contains the bivalent-O-O-structure and which may be
considered to be a structural derivative of hydrogen peroxide
where one or both of the hydrogen atoms has been replaced by an
organic radical;

(6)  An oxidizer, meaning a chemical that initiates or
promotes combustion in other materials, thereby causing fire
either of itself or through the release of oxygen or other gases;