Mesityl Oxide

CAS RN:141-79-7

Protective Equip. / Clothing

Wear full protective clothing and positive pressure self-contained breathing apparatus.
Wear appropriate personal protective clothing to prevent skin contact.
Wear appropriate eye protection to prevent eye contact.
Facilities for quickly drenching the body should be provided within the immediate work area for emergency use where there is a possibility of exposure. [Note: It is intended that these facilities provide a sufficient quantity or flow of water to quickly remove the substance from any body areas likely to be exposed. The actual determination of what constitutes an adequate quick drench facility depends on the specific circumstances. In certain instances, a deluge shower should be readily available, whereas in others, the availability of water from a sink or hose could be considered adequate.]
Respirator Recommendation: Up to 250 ppm: (APF = 25) Any supplied-air respirator operated in a continuous-flow mode. Substance causes eye irritation or damage; eye protection needed./(APF = 25) Any powered, air-purifying respirator with organic vapor cartridge(s). Substance causes eye irritation or damage; eye protection needed.
Respirator Recommendation: Up to 500 ppm: (APF = 50) Any chemical cartridge respirator with a full facepiece and organic vapor cartridge(s)./(APF = 50) Any air-purifying, full-facepiece respirator (gas mask) with a chin-style, front- or back-mounted organic vapor canister./(APF = 50) Any powered, air-purifying respirator with a tight-fitting facepiece and organic vapor cartridge(s). Substance causes eye irritation or damage; eye protection needed./(APF = 50) Any self-contained breathing apparatus with a full facepiece./(APF = 50) Any supplied-air respirator with a full facepiece.
Respirator Recommendation: Up to 1400 ppm: (APF = 2000) Any supplied-air respirator that has a full facepiece and is operated in a pressure-demand or other positive-pressure mode.
Respirator Recommendation: Emergency or planned entry into unknown concentrations or IDLH conditions: (APF = 10,000) Any self-contained breathing apparatus that has a full facepiece and is operated in a pressure-demand or other positive-pressure mode./(APF = 10,000) Any supplied-air respirator that has a full facepiece and is operated in a pressure-demand or other positive-pressure mode in combination with an auxiliary self-contained positive-pressure breathing apparatus.
Respirator Recommendation: Escape: (APF = 50) Any air-purifying, full-facepiece respirator (gas mask) with a chin-style, front- or back-mounted organic vapor canister/Any appropriate escape-type, self-contained breathing apparatus.
Protective gloves. Protective clothing. Face shield, or eye protection in combination with breathing protection.
Find more information on this substance at: Hazardous Substances Data Bank , TOXNET , PubMed