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)


NIOSH REL: Ca C 5 mg/m3 [15-minute] See Appendix A
OSHA PEL: none
IDLH Ca [N.D.] See: IDLH INDEX 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
See: NMAM or OSHA Methods
Personal Protection & Sanitation (See protection)
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

Important additional information about respirator selection
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
(APF = 50) Any air-purifying, full-facepiece respirator (gas mask) with a chin-style, front- or back-mounted organic vapor canister having an N100, R100, or P100 filter. Click here for information on selection of N, R, or P filters./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]