PAC Database - Detailed Chemical Data
Chemical Identity
| Chemical | CAS# | UN# | Health Code Numbers | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Petroleum asphalt; (Bitumen) | 8052-42-4b | 1999 |
15.01
11.01
15.02
10.00
3.04
3.07
4.11
3.11
4.12
|
|||||||||
| Formula | Synonyms | |||||||||||
| [Unspecified] | ASPHALT, AC 10, AC 10 (ASPHALT), AC 20, AC 20 (ASPHALT), AC 3, AC 3 (ASPHALT), AC 8, AC 8 (ASPHALT), AQUA BROWN B-A, AQUA BROWN B-K, AR 1000, ASFALTO (DOT SPANISH), ASPHALT BLENDING STOCKS: ROOFERS FLUX, ASPHALT BLENDING STOCKS: STRAIGHT RUN RESIDUE, ASPHALT CEMENTS, ASPHALT: ASPHALTUM, ASPHALTE (DOT FRENCH), ASPHALTIC BITUMEN, ASPHALTUM, ASPHALTUM OIL, ASRO 150, ASRO 85, ASZOL A, ASZOL H, AZ-IP 90, BITUMEN, BITUMEN (EUROPEAN TERM), BITUMENS, ASPHALT, BITUMINOUS MATERIALS, ASPHALT, BITUSIZE B, CARPETING MEDIUM, CPE 3, DACHOLEUM, DUST-LAYING OIL, FLINTKOTE, FLINTKOTE 5, FLINTKOTE FL, FLUXING OIL, JUDEAN PITCH, JWS 8930AK, LIQUAMITE, LIQUID ASPHALT, MINERAL PITCH, MINERAL RUBBER, MONAR DA GRADE, NIPPON OIL 40-60, NT 8H, PETROLEUM ASPHALT, PETROLEUM BITUMEN, PETROLEUM PITCH, PETROLEUM REFINING RESIDUES, ASPHALTS, PETROLEUM RESIDUE, PETROLEUM TAILINGS, RESIDUAL ASPHALT, RESIDUAL OIL, ROAD ASPHALT, ROAD BINDER, ROAD OIL, ROOFING ASPHALT, RUBBER, MINERAL, SEAL-COATING MATERIAL, SLAD TB, STARS 60-80, STRAIGHT ASPHALT, TRUMBULL 3400, WITCURB 22L, WRAC 20 | |||||||||||
Physical Properties
| Mol Wt | State | MP (°C) | BP (°C) | VP (Hg) | VP (°C) | SG | LEL (ppm) |
|---|---|---|---|---|---|---|---|
| 0 | S or L | 210 | 1.00 - 1.18 |
PAC Values
| PAC-1 | PAC-2 | PAC-3 |
|---|---|---|
| 15 | 170 | 990 |
| PAC-1 | PAC-2 | PAC-3 |
|---|---|---|
| 0 | 0 | 0 |
Technical Basis
A review of available sources identified exposure limits (REL-C, OEL-STEL, TLV-TWA) and acute toxicity data (LC50, LD50) for several species and routes. Data sources were selected according to the hierarchy listed in Table 3.1. Toxicity data were selected according to type of exposure, species, and route according to the hierarchies stated in Sections 3.3.1, 3.3.2, and evaluated using factors in Tables 3.2, 3.3, and 3.4. Analysts evaluated the LC50; however, the duration of the dose is not reported (Sections 3.3.1 and 3.3.2). Instead, a rat oral LD50, was selected as the TEEL-3 basis. The exposure limits (REL-C, OEL-STEL, TWAs) are reported only for heated asphalt; considering this, these were not selected for TEEL development. Instead, TEEL-2 and TEEL-1 values were derived according to Table 3.5.
• PAC-1 = TEEL-1 = TEEL-2/11
• PAC-2 = TEEL-2 = TEEL-3/6
• PAC-3 = TEEL-3 = Rat oral LD50 (>5000 mg/kg)
This review generated PAC values inconsistent with Rev. 29A. The Rev. 29A TEEL-1 basis was a TLV-TWA for particles not otherwise specified (Section 3.5.2), from which the TEEL-2 and TEEL-3 were derived (Table 3.5). The current TEEL-3 basis is a rat oral LD50 from which TEEL-2 and TEEL-1 were derived (Table 3.5).
• PAC-1 = TEEL-1 = TEEL-2/11
• PAC-2 = TEEL-2 = TEEL-3/6
• PAC-3 = TEEL-3 = Rat oral LD50 (>5000 mg/kg)
This review generated PAC values inconsistent with Rev. 29A. The Rev. 29A TEEL-1 basis was a TLV-TWA for particles not otherwise specified (Section 3.5.2), from which the TEEL-2 and TEEL-3 were derived (Table 3.5). The current TEEL-3 basis is a rat oral LD50 from which TEEL-2 and TEEL-1 were derived (Table 3.5).
References
Chemical information and rat oral LD50 retrieved from: https://pubchem.ncbi.nlm.nih.gov/compound/Asphalt
Rat LC50 (94.4 mg/m3). HPV123, 2002. Retrieved from: https://www.cdc.gov/niosh-rtecs/CI970FE0.html
OELs: https://ilv.ifa.dguv.de/limitvalues/5642
Exposure limits: https://www.osha.gov/chemicaldata/710