If engineering controls and work practices are not effective in controlling exposure to this material, then wear suitable personal protective equipment including approved respiratory protection. Have appropriate equipment available for use in emergencies such as spills or fire.

If respiratory protection is required, institute a complete respiratory protection program including selection, fit testing, training, maintenance and inspection. Refer to the CSA Standard Z94.4-93, "Selection, Use and Care of Respirators," available from the Canadian Standards Association, Rexdale, Ontario, M9W 1R3.

RESPIRATORY PROTECTION GUIDELINES:

NIOSH RECOMMENDATIONS FOR CARBON BLACK CONCENTRATIONS (NO POLYCYCLIC AROMATIC HYDROCARBON CONTAMINATION) IN AIR:

UP TO 17.5 mg/m³: Dust and mist respirator.

UP TO 35 mg/m³: Dust and mist respirator except single-use and quarter-mask respirator; or SAR.

UP TO 87.5 mg/m³: Powered air-purifying respirator with dust and mist filter(s); or SAR operated in a continuous-flow mode.

UP TO 175 mg/m³: Full-facepiece respirator with high-efficiency particulate filter(s); or powered air-purifying respirator with tight-fitting facepiece and high-efficiency particulate filter(s); or full-facepiece SCBA; or full- facepiece SAR.

UP TO 1750 mg/m³: Positive pressure SAR.

EMERGENCY OR PLANNED ENTRY INTO UNKNOWN CONCENTRATIONS OR IDLH CONDITIONS:

Positive pressure, full-facepiece SCBA; or positive pressure, full-facepiece SAR with an auxiliary positive pressure SCBA.

ESCAPE: Full-facepiece respirator with high-efficiency particulate filter(s); or escape-type SCBA.

NOTE: The IDLH concentration for carbon black is 1750 mg/m³. The purpose of establishing an IDLH value is to ensure that the worker can escape from a given contaminated environment in the event of failure of the most protective respiratory protection equipment. In the event of failure of respiratory protective equipment, every effort should be made to exit immediately.

NIOSH RECOMMENDATIONS FOR CARBON BLACK CONCENTRATIONS IN AIR IN THE PRESENCE OF POLYCYCLIC AROMATIC HYDROCARBONS (PAHs):

AT CONCENTRATIONS ABOVE THE NIOSH REL: Positive pressure, full-facepiece SCBA; or positive pressure, full-facepiece SAR with an auxiliary positive pressure SCBA.

ESCAPE: Full-facepiece respirator with high-efficiency filter(s); or escape- type SCBA.

NOTE: The NIOSH Recommended Exposure Limit (REL) for carbon black in the presence of PAHs is 0.1 mg PAH/m³ (time-weighted average concentration).

NOTE: NIOSH has classified carbon black in the presence of PAHs as a potential occupational carcinogen, according to specific NIOSH criteria. This classification is reflected in these recommendations for respiratory protection, which specify that only the most reliable and protective respirators be worn. The requirements in Canadian jurisdictions may vary.

The respirator use limitations specified by the approving agency and the manufacturer must be observed. Recommendations apply only to NIOSH approved respirators. Air-purifying respirators do not protect against oxygen-deficient atmospheres.

ABBREVIATIONS: SAR = supplied-air respirator; SCBA = self-contained breathing apparatus; IDLH = Immediately Dangerous to Life or Health.

Chemical safety goggles. A face shield may also be necessary.

Dust-resistant gloves, coveralls, boots, and/or other resistant protective clothing.

No specific guidelines are available. Contact chemical manufacturer or supplier for advice. Most materials commonly used in protective clothing are probably adequate. Physical strength of the material is probably the main requirement.

Remove contaminated clothing. Keep contaminated clothing in closed containers. Discard or launder before rewearing. Inform laundry personnel of contaminant's hazards.

Do not eat, smoke or drink in work areas. Wash hands thoroughly after handling this material. Maintain good housekeeping.