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OKICOLOR 8
20
Health Hazard Data
Routes of Entry: Inhalation, Ingestion, Eyes, Skin.
1 Carbon Black
Group 2B “Possible Carcinogen”; IARC
Evidence of development of lung tumors in rats receiving
chronic inhalation exposure to free carbon black at levels
that induce particle overload of the lung. Studies
performed in animal models other than rats have not
demonstrated an association between carbon black and
lung tumors. A two-year cancer bioassay using a typical
toner preparation containing carbon black demonstrated
no association between toner exposure and tumor
development in rats.
In a study in rats by chronic inhalation exposure to a
typical toner, a mild to moderate degree of lung fibrosis
was observed in 92% of the rats in the high concentration
(16 mg/m
3
) exposure group, a mild degree of fibrosis was
noted in 22% of the animals in the middle
(4 mg/m
3
) exposure group, and no pulmonary change was
reported in the lower (1 mg/m
3
) exposure group, the most
relevant level to potential human exposures.
Carbon black is designated hazardous according to OSHA
29 CFR 1910.1200.
Reactivity Data
Stability: Stable
Polymerization: Will not occur.
Hazardous Decomposition Products: Combustion or
decomposition will generate phenol derivatives, carbon
monoxide and carbon dioxide at temperatures over 300°C
(572°F).
Temperature: Not available
Incompatibility: Avoid exposure to strong oxidizers.
