Certifications 2

Reference No:
Valve Regulated Lead-acid Battery
Hitachi Chemical Energy Technology Co.,Ltd.
Page 7 / 20
Date of issuing: January 01, 2020
(lead dioxide/ lead sulfate)
It is considered to be stable under normal handling and
storage.
(dilute sulfuric acid)
At first, vapor is generated by heating, and generate
sulfuric acid vapors if continue to heat.
Rapid contact with water might be generate a large
amount of heat, and sometimes the acid is scattered.
Dilute sulfuric acid which is generated by diluting with
water, generates hydrogen gas by the corrosion of various
metals and may cause flash explosion by mixing with air.
There is hygroscopic.
Hazardous reactivity :
(lead)
It does not occur hazardous reaction under normal
condition.
(lead dioxide)
React violently with combustible materials and organic
matter (sulfuric acid, hydrogen peroxide, phosphoric acid),
and it may cause risk of fire.
(lead sulfate)
It may react with strong oxidizing agents.
(dilute sulfuric acid)
It may cause fire or explosion by many reactions.
It is strong oxidant and reacts with combustible and
reducing materials.
It is strong acid and reacts violently with bases and is
corrosive to most common metals forming a
flammable/explosive gas(hydrogen).
React with water and organic materials violently and
release heat.
Conditions to avoid :
Heating, contact with ignition sources (open flame, spark,
etc.,)
Incompatible materials :
(lead) ; Oxidizing agent.
(lead dioxide) ; Flammable materials, reducing materials.
(lead sulfate) ; Strong oxidizing agents.
(dilute sulfuric acid) ;
Combustible materials, reducing materials, strong
oxidizing agents, strong bases.
Hazardous decomposition products :
In case of fire, there is a possibility that irritative or toxic gases
or fumes are generated.
Other information
May form air/gas mixture during charging.
There is a possibility of hydrogen emission and explosion
during charging.