# NIOSH Pocket Guide to Chemical Hazards
Asphalt fumes | CAS 8052-42-4
| RTECS CI9900000
Synonyms & Trade Names Asphalt: Asphaltum, Bitumen (European term), Petroleum asphalt, Petroleum bitumen, Road asphalt, Roofing asphalt | DOT ID & Guide 1999 130 (asphalt)
Exposure Limits | NIOSH REL: Ca C 5 mg/m3 [15-minute] See Appendix A
OSHA PEL: none
IDLH Ca [N.D.] | Conversion
Physical Description Fumes generated during the production or application of asphalt (a dark-brown to black cement-like substance manufactured by the vacuum distillation of crude petroleum oil).
Properties vary depending upon the specific asphalt formulation or mixture. |  |  |
Asphalt: Combustible Solid
Incompatibilities & Reactivities None reported [Note: Asphalt becomes molten at about 200°F.]
Measurement Methods NIOSH 5042
Personal Protection & Sanitation Skin: Prevent skin contact Eyes: Prevent eye contact Wash skin: Daily Remove: No recommendation Change: Daily | First Aid (See procedures) Eye: Irrigate immediately Breathing: Respiratory support
Respirator Recommendations NIOSH At concentrations above the NIOSH REL, or where there is no REL, at any detectable concentration: (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 Escape: (APF = 50) Any air-purifying, full-facepiece respirator (gas mask) with a chin-style, front- or back-mounted organic vapor canister having a high-efficiency particulate filter/Any appropriate escape-type, self-contained breathing apparatus
Exposure Routes inhalation, skin absorption, skin and/or eye contact
Symptoms Irritation eyes, respiratory system; [potential occupational carcinogen]
Target Organs Eyes, respiratory system Cancer Site [in animals: skin tumors]
See also: INTRODUCTION