SDS

Page 3 of 7 NiMH MSDS Created 14Aug2014
・Eye contact :
Immediately flush eyes with water continuously for at least 15 minutes. Seek medical attention
immediately.
A battery cell and internal cell materials of an opened battery cell
・Ingestion :
Do not induce vomiting. Seek medical attention immediately.
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Section 5, Fire-fighting measures
If fire or explosion occurs when batteries are on charge, shut off power to charger.
In case of fire, it is permissible to use any class of extinguishing medium on these batteries or their packing
material. Cool exterior of batteries if exposed to fire to prevent rupture.
In case of fire where nickel metal hydride batteries are present, apply a smothering agent such as METL-X,
sand, dry ground dolomite, or soda ash, or flood the area with water. A smothering agent will extinguish
burning nickel metal hydride batteries. Water may not extinguish burning batteries but will cool the adjacent
batteries and control the spread of fire. Burning batteries will burn themselves out. Virtually all fires involving
nickel metal hydride batteries can be controlled with water. When water is used, however, hydrogen gas may
evolve. In a confined space, hydrogen gas can form an explosive mixture. In this situation, smothering agents
are recommended.
Fire fighters should wear self-contained breathing apparatus.
Burning nickel metal hydride batteries can produce toxic fumes including oxides of nickel, cobalt, aluminum,
manganese, lanthanum, cerium, neodymium, and praseodymium.
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Section 6, Accidental release measures
Steps to Be Taken in Case Material is Released or Spilled:
Batteries that are leaking should be handled with rubber gloves. Avoid direct contact with electrolyte.
Method of recovery and neutralization :
Dilute any leaked electrolyte with water and neutralize with diluted sulfuric acid. The leaked solid is
to be moved to a container. Place of leakage to be fully flushed with water.
Wear protective clothing and a positive pressure Self-Contained Breathing Apparatus (SCBA)
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Section 7, Handling and storage
Storage:
Store in a cool, well-ventilated area. Elevated temperatures can result in shortened battery life.
Mechanical Containment:
Never seal or encapsulate nickel metal hydride batteries. Do not obstruct safety release vents on batteries.
Encapsulation (potting) of batteries will not allow cell venting and can cause high pressure rupture.
Handling:
Accidental short circuit for a few seconds will not seriously affect the battery. However, this battery is
capable of delivering very high short circuit currents. Prolonged short circuits will cause high cell
temperatures which can cause skin burns. Sources of short circuits include jumbled batteries in bulk
containers, metal jewelry, and metal covered tables or metal belts used for assembly of batteries into
devices.
Do not open battery. The negative electrode material may be pyrophoric. Should an individual cell from a
battery become disassembled, spontaneous combustion of the negative electrode is possible. This is much
more likely to happen if the electrode is removed from its metal container. There can be a delay between
exposure to air and spontaneous combustion.