How can I work with carbon black safely?
This material is a VERY TOXIC (POSSIBLE CANCER HAZARD AND POSSIBLE MUTAGEN) solid. It may also be a DUST EXPLOSION HAZARD depending on the impurities present. Before handling, it is extremely important that engineering controls are operating and that protective equipment requirements and personal hygiene measures are being followed Only authorized personnel should have access to this material. They should be properly trained regarding its hazards and its safe use. Maintenance and emergency personnel should be advised of potential hazards.
If carbon black is released, immediately evacuate the area. Immediately report leaks, spills or ventilation failures. When there is large-scale use of this material, closed handling systems for processes involving this material should be considered.
Use in smallest possible amounts. Avoid generating dusts. Prevent the release of dust into workplace air.
Eliminate all ignition sources, (e.g. sparks, open flames). Post "NO SMOKING" signs. It is very important to keep areas where this material is used clear of other materials which can burn (e.g. cardboard, sawdust). If impurities are present on the carbon black which could put it at risk of being an explosion hazard, then use a non-sparking ventilation systems, approved explosion-proof equipment and intrinsically safe electrical systems in areas of use. Inspect containers for leaks before handling. Use the proper tools to open containers. Ripping open a container can cause an uneven tear, thus making spills more likely. Use dust-tight, labelled containers. Keep containers closed when not in use.
Do not use with incompatible materials such as strong oxidizing agents (e.g. chlorates and nitrates). There is an increased risk of fire and explosion. Good housekeeping is very important. Keeping work areas clean is essential. The use of compressed air to clean equipment, clothing, etc., is not recommended. Maintain good personal hygiene. If a closed handling system is not being used, showering at the end of each workshift may be necessary. Separate storage facilities for street clothes and for protective clothing and equipment may also be necessary.
Follow handling precautions on Material Safety Data Sheet. Have suitable emergency equipment for fires, spills and leaks readily available. Maintain handling equipment. Comply with applicable regulations.
What can be done to control hazardous conditions?
Engineering methods to control hazardous conditions are preferred. Methods include mechanical ventilation (dilution and local exhaust), process or personnel enclosure, control of process conditions, and process modification (e.g. substitution of a less hazardous material).
Administrative controls and personal protective equipment may also be required. Use local exhaust ventilation, and process enclosure if necessary, to control airborne dust. Locate dust collectors outside or where permitted by regulation. If impurities are present which could put this material at risk of being an explosion hazard, then use a non-sparking, grounded ventilation system, separate from other exhaust ventilation systems. In this case, approved explosion-proof equipment and intrinsically safe electrical systems should be provided in areas of large-scale use.
Supply sufficient replacement air to make up for air removed by exhaust system.
OSH Answers Lists
