PAC Database - Detailed Chemical Data
Chemical Identity
| Chemical | CAS# | UN# | Health Code Numbers | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Tellurium | 13494-80-9 |
15.01
11.01
7.01
8.00
7.00
11.00
4.09
4.10
4.07
10.00
|
||||||||||
| Formula | Synonyms | |||||||||||
| Te | TELLURIUM, AURUM PARADOXUM, METALLUM PROBLEMATUM, TELLURIUM ELEMENT | |||||||||||
Physical Properties
| Mol Wt | State | MP (°C) | BP (°C) | VP (Hg) | VP (°C) | SG | LEL (ppm) |
|---|---|---|---|---|---|---|---|
| 127.6 | S | 449.51 | 988 | 0.75 | 502 | 6.232 |
PAC Values
| PAC-1 | PAC-2 | PAC-3 |
|---|---|---|
| 0.3 | 20 | 50 |
| PAC-1 | PAC-2 | PAC-3 |
|---|---|---|
| 0.057 | 3.8 | 9.6 |
Technical Basis
A review of available sources identified the following TWA, LOC, and IDLH data. 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. The effective 1990 IDLH was selected as the TEEL-3. The LOC was selected as the TEEL-2. The TLV-TWA was selected as the TEEL-1 basis.
• TEEL-1 = TLV-TWA (0.1 mg/m3) x 3
• TEEL-2 = LOC (20 mg/m3)
• TEEL-3 = IDLH (1990, 50 mg/m3)
This review generated TEEL-3 and TEEL-1 values inconsistent with Rev. 29A. The Rev. 29A and current TEEL-2 are consistent, the LOC. The Rev. 29A TEEL-3 and TEEL-1 values were derived from this TEEL-2, while the current TEEL-3 and TEEL-1 basis are more preferred sources (exposure limits).
• TEEL-1 = TLV-TWA (0.1 mg/m3) x 3
• TEEL-2 = LOC (20 mg/m3)
• TEEL-3 = IDLH (1990, 50 mg/m3)
This review generated TEEL-3 and TEEL-1 values inconsistent with Rev. 29A. The Rev. 29A and current TEEL-2 are consistent, the LOC. The Rev. 29A TEEL-3 and TEEL-1 values were derived from this TEEL-2, while the current TEEL-3 and TEEL-1 basis are more preferred sources (exposure limits).
References
https://pubchem.ncbi.nlm.nih.gov/compound/Tellurium
TLV-TWA. Retrieved from: https://www.acgih.org/tellurium-and-compounds-not-otherwise-specified-excluding-hydrogen-telluride/
LOC, Appendix C, page C-9. Retrieved from: https://www.epa.gov/sites/default/files/2015-09/documents/technical_guidance_for_hazard_analysis.pdf
IDLH: https://www.cdc.gov/niosh/idlh/13494809.html