S H A R P

Date Revised :Jul. 13. 2007

Date Issued :Sep. 16, 2004

MATERIAL SAFETY DATA SHEET (3/4)

MSDS No. B-1021

Section 10. Stability and Reactivity

Stability: Stable except above 200°C (392°F).

Hazardous Reactions: Dust explosion, like most finely divided organic powders.

Conditions to avoid: Electric discharge, throwing into fire.

Materials to Avoid: Oxidizing materials.

Hazardous Decomposition Products: CO, CO2, and smoke.

Hazardous Polymerization : Will not occur.

Section 11. Toxicological Information

Health Effects from Exposure: No symptoms expected with intended use. Toxicological Data

Acute Toxicity:

Ingestion(oral), LD50(mg/kg) : >2000 (Rat) *

Dermal, LD50(mg/kg) : No data available

Inhalation, LD50(mg/l) : >1.93 (Rat, 4hour) * (This was the highest attainable concentration.)

Eye irritation : Slight conjunctival irritation (Rabbit) *

Skin irritation : Non irritant (Rabbit) * Sensitizer : Non sensitizer (Guinea pig)

Local Effects : See Chronic Toxicity or Long term Toxicity Chronic Toxicity or Long term Toxicity :

In a two-year inhalation study of chronic toxicity and carcinogenicity using a typical toner in rats, there were no lung changes at all in the lowest exposure level (1 mg/m3), the most relevant level to potential human exposures. A minimal to mild degree of fibrosis was noted in 22% of the animals at the middle exposure level (4 mg/m3), and a mild to moderate degree of fibrosis was observed in 92 % of the rats at the highest exposure level (16mg/m3). The lung changes observed in the higher exposure groups are interpreted in term of ìlung overloadingî, a series of generic responses to the presence of large quantities of respirable, insoluble and relatively benign dusts retained for extended time periods in the lungs. Lung tumor frequency was unchanged among rats exposed to toner at the three exposure levels, and for air-only control rats.

Carcinogenicity

IARC Monographs: Not listed

NTP(USA): Not listed

OSHA Regulated(USA): Not listed

In 1996 the IARC reevaluated carbon black as a Group 2B carcinogen (possible human carcinogen). This evaluation is given to Carbon Black for which there is inadequate human evidence, but sufficient animal evidence. The latter 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 have not demonstrated an 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.

Mutagenicity : Negative * (AMES test)

( * = Based on data for other products with similar ingredients)

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