Z2 - Article Containing Mercury. An article in accordance with 29 CFR 1910.1200 which contains mercury, or
an item containing mercury which under conditions of storage would not be expected to release hazardous
materials and would not pose a physical hazard or health risk to employees. This category includes, but is not
limited to, electron tubes, mercury switches and relays, mercury vapor lamps and tubes, fluorescent lamps,
manometers, pumps, thermometers, or other devices in which the mercury is contained in such a fashion that
exposure to personnel in a storage environment is minimal. For batteries which contain mercury use HCC Z7.
Z3 - Article Containing Polychlorinated Biphenyl (PCB). An article in accordance with 29 CFR 1910.1200
which contains Polychlorinated Biphenyls (PCB), or an item containing PCB which under conditions of storage
would not be expected to release hazardous materials and would not pose a physical hazard or health risk to
employees. This category includes, but is not limited to transformers, capacitors, or other devices in which the
PCBs are contained in such a fashion that exposure to personnel in a storage environment is minimal.
Z4 - Article, Battery, Lead Acid, Nonspillable. A nonspillable battery consisting of a lead anode, a lead
dioxide cathode, and sulfuric acid electrolyte that is designed and constructed so as to positively prevent leakage
of the electrolyte, irrespective of the position of the battery. It must meet the definition of a "Nonspillable
Battery" as defined in 49 CFR, Section 173.159(d).
Z5 - Article, Battery, Nickel Cadmium, Nonspillable. A nonspillable battery consisting of a cadmium anode, a
nickel oxyhydroxide cathode, and potassium hydroxide electrolyte that is designed and constructed so as to
positively prevent leakage of the electrolyte, irrespective of the position of the battery. It must meet the definition
of a "Nonspillable Battery" as defined in 49 CFR, Section 173.159(d).
Z6 - Article, Battery, Lithium. A battery consisting of a lithium anode, a solid or liquid cathode, and
electrolyte. The battery must meet the conditions established by 49 CFR, 173.185. Examples of typical lithium
batteries and their compositions are provided below.
TYPICAL LITHIUM ANODE/SOLUBLE CATHODE CELLS
NAME
ELECTROLYTE MIXTURE
CATHODE
Lithium-Sulfur dioxide
Sulfur dioxide/Acetonitrile/ Lithium
Sulfur dioxide on Carbon
bromide
Lithium-Thionyl chloride
Thionyl chloride/Lithium
Thionyl chloride on
tetrachloroaluminate
Carbon
Lithium-Sulfuryl chloride
Sulfuryl chloride/Aluminum tetrachloride Sulfuryl chloride on
Carbon
B-15
