Certifications 2

Reference No:
Valve Regulated Lead-acid Battery
Hitachi Chemical Energy Technology Co.,Ltd.
Page 14 / 20
Date of issuing: January 01, 2020
has been observed in seven out of nine that have been
exposed for more than 30 years in a lead-acid battery.
Therefore, it was classified as "Category 1 of GHS specific
target organ toxicity (repeated exposure) (nervous
system)".
Aspiration hazard :
No data.
Others :
No information.
○Dilute sulfuric acid (electrolyte)
Acute toxicity (Oral) :
Based on the Rat LD
50
value: 2140mg/kg and the
description of the death case report by the oral ingestion in
humans (amount of intake is unknown), it was classified as
Category 5 of GHS acute toxicity (Oral).
Acute toxicity (Dermal) :
No data.
Acute toxicity (Inhalation: Gases) :
Classification not applicable because it is a liquid in the
definition of GHS.
Acute toxicity (Inhalation: Vapors) :
No data.
Acute toxicity
(Inhalation: Dust and Mists) :
Based on rat LC
50
value: 0.375mg/L (4 hour exposure) and
347ppm (1-hour exposure) (4 hour equivalent value:
0.347mg/L), it was classified as Category 2 of GHS acute
toxicity (inhalation).
Skin corrosion/irritation :
Since pH of concentrated sulfuric acid was 1 or less, it was
judged to be corrosive substance in accordance with the
GHS classification standards, and classified as Category
1A-1C of GHS skin corrosion/irritation.
Serious eye damage/eye irritation :
There is the description that the critical damage to the eye
accompanied by lysis of anterior chamber of eye was
observed in accident case of human. And also from the
description that the moderate irritation with 5% solution and
the severe irritation with 10% solution were observed to the
eye of rabbit, therefore, it was classified as "Category 1 of
GHS serious eye damage/eye irritation".
Respiratory or skin sensitization :
Respiratory sensitization: No data.
Skin sensitization:
There is no test data on skin sensitizing of sulfuric acids.
Although sulfuric acid has been industrially used for several
decades, there is no case report of skin sensitization while
skin injuries by skin irritation are well known.
Although an extensive amount of sulfate ion exists internally
(the sulfate ion in serum ~33 mmol/L, and 50 times more in
cells), allergic reactions do not occur.
In allergic test of sulfuric acid salt of metal, even if allergic
positive with metal may occur, sulfuric ion is presumed to
result in allergic negative as is suggested by the negative