PAC Database - Detailed Chemical Data
Chemical Identity
| Chemical | CAS# | UN# | Health Code Numbers | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Aluminum carbide | 1299-86-1 | 1394 |
15.01
15.02
11.01
|
|||||||||
| Formula | Synonyms | |||||||||||
| Al4C3 | ALUMINUM CARBIDE, CARBURE D^ALUMINIUM (DOT FRENCH), CARBURO DE ALUMINIO (DOT SPANISH), TETRAALUMINUM TRICARBIDE | |||||||||||
Physical Properties
| Mol Wt | State | MP (°C) | BP (°C) | VP (Hg) | VP (°C) | SG | LEL (ppm) |
|---|---|---|---|---|---|---|---|
| 143.9586 | S | 2100 | 2.36 |
PAC Values
| PAC-1 | PAC-2 | PAC-3 |
|---|---|---|
| 13 | 150 | 880 |
| PAC-1 | PAC-2 | PAC-3 |
|---|---|---|
| 2.2 | 25 | 150 |
Technical Basis
A review of available sources did not identify exposure limits or acute toxicity data for aluminum carbide. Instead, analysts evaluated exposure limits (STEL, TWA) for insoluble aluminum compounds (Al, CASRN: 7429-90-5). Data sources were selected according to the hierarchy listed in Table 3.1. Analysts selected the OEL-STEL for insoluble aluminum compounds (Austria and Denmark, inhalable fraction) as the TEEL-1 and a compound adjustment factor was applied per Section 3.2.2. TEEL-2 and TEEL-3 values were derived according to Table 3.5.
• PAC-1 = TEEL-1 = MW-adjusted OEL-STEL (insoluble aluminum compounds; CASRN: 7249-90-5; Austria and Denmark; inhalable fraction; 10 mg/m3)
• PAC-2 = TEEL-2 = TEEL-1 x 11
• PAC-3 = TEEL-3 = TEEL-2 x 6
This review generated PAC values inconsistent with Rev. 29A. The Rev. 29A TEEL-1 basis was a weight adjusted TLV-TWA for insoluble aluminum that was not found during this review. The current TEEL-1 basis is a weight adjusted OEL-STEL for insoluble aluminum compounds. The Rev. 29A and current TEEL-2 and TEEL-3 use the same methodology, with differences due to the change in TEEL-1.
• PAC-1 = TEEL-1 = MW-adjusted OEL-STEL (insoluble aluminum compounds; CASRN: 7249-90-5; Austria and Denmark; inhalable fraction; 10 mg/m3)
• PAC-2 = TEEL-2 = TEEL-1 x 11
• PAC-3 = TEEL-3 = TEEL-2 x 6
This review generated PAC values inconsistent with Rev. 29A. The Rev. 29A TEEL-1 basis was a weight adjusted TLV-TWA for insoluble aluminum that was not found during this review. The current TEEL-1 basis is a weight adjusted OEL-STEL for insoluble aluminum compounds. The Rev. 29A and current TEEL-2 and TEEL-3 use the same methodology, with differences due to the change in TEEL-1.
References
Chemical information: https://pubchem.ncbi.nlm.nih.gov/compound/Aluminum-carbide
Insoluble aluminum OELs: https://ilv.ifa.dguv.de/limitvalues/2011