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DGB
1-41
S H A R P
Date Revised : Aug.7, 2001
Date Issued : Jun.1, 1998
MATERIAL SAFETY DATA SHEET (3/4)
MSDS No. F-00831
10. STABILITY AND REACTIVITY
Stability :Stable
Hazardous Reactions :Dust explosion, like most finely divided organic powders.
Conditions to avoid :Electri discharge, throwing into fire.
Materials to avoid :Oxidizing Materials
Hazardous Decomposition Products :Co, CO
2
and NO
x
Further Information :None
11. TOXICOLOGICAL INFORMATION
Acute Toxicity
Ingestion (oral) : LD50 > 2000mg/kg (Rats)
Dermal : LD 50 > 2000mg/kg (rats
Inhalation : No data
Eye irritation : Not an irritant
Skin irritation : Not an irritant
Skin sensitizer : No sensitization
Mutagenicity : Negative (Ames Test)
Carcinogenicity : In 1996 the IARC reevaluated carbon black as a Group 2B carcinogen (possible
human carcinogen). This classification is given to chemicals for which there is inade-
quate human evidence, but sufficient animal evidence on which to base an opinion
of carcinogenicity. The classification is based upon the development of lung tumors
in rats receiving chronic inhalation exposures to free carbon black at levels that induce
particle overload of the lung. Studies performed in animal models other than rats
did not show any association between carbon black and lung tumors.
Moreover, a two-year cancer bioassay using a typical toner preparation containing
carbon black demonstrated no association between toner exposure and tumor
development in rats.
Chronic Effects : In a study in rats of 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 (16mg/m
3
)
exposure group, and a minimal to mild degree of fibrosis was noted in 22% of the
animals in the middle (4mg/m
3
) exposure group, but no pulmonary change was
reported in the lowest (1mg/m
3
) exposure group, the most relevant level to potential
human exposures.
12. ECOLOGICAL INFORMATION
No data are available.
13. DISPOSAL CONSIDERATIONS
Waste from residues :Waste material may be dumped or incinerated under conditions which meet
all federal, state and local environmental regulations.
Contaminated Packaging :Waste may be disposed or incinerated under conditions which meet all
federal, state and local environmental regulations.