No significant immediate hazards for emergency response are known. Solid or dust may cause irritation or corneal injury due to mechanical action. Essentially nonirritating to skin. Mechanical injury only. Skin absorption unlikely due to physical properties.
Ingestion is unlikely due to physical state.
Physical injury only. May cause choking if swallowed. Dust may cause irritation to upper respiratory tract. The significance of these findings is considered equivocal. No tumors were observed in rats exposed to 1500 ppm.