PAC Database - Detailed Chemical Data

Chemical Identity
Chemical CAS# UN# Health Code Numbers
Thallium chloride; (Thallium(I) chloride) 7791-12-0 2811
4.01
4.05
11.00
4.09
4.07
10.00
5.10
4.11
3.11
Formula Synonyms
ClTl THALLOUS CHLORIDE, THALLIUM (1+) CHLORIDE, THALLIUM CHLORIDE, THALLIUM CHLORIDE TLCL, THALLIUM CHLORIDE(TLCL), THALLIUM MONOCHLORIDE, THALLIUM(1+) CHLORIDE, THALLIUM(I) CHLORIDE
Physical Properties
Mol Wt State MP (°C) BP (°C) VP (Hg) VP (°C) SG LEL (ppm)
239.84 S 431 720 7.5 504 7
PAC Values
PAC Values (Original Units: mg/m3)
PAC-1 PAC-2 PAC-3
0.18 2.0 23
Converted PAC Values (ppm)
PAC-1 PAC-2 PAC-3
0.018 0.20 2.3
Technical Basis
A review of available sources identified the following: mouse oral LD50 toxicity data, LOC, and IDLH (1990) for soluble thallium (CASRN: 7440-28-0). 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 IDLH (1990) was selected as the TEEL-3 and a compound adjustment factor was applied (Section 3.2.2). The LOC was selected as the TEEL-2. TheTEEL-1 value was derived according to Table 3.5.
• TEEL-1 = TEEL-2/11
• TEEL-2 = LOC (0.002 g/m3)
• TEEL-3 = MW-adjusted IDLH (1990, thallium (soluble compounds), CASRN: 7440-28-0, 20 mg/m3)
This review generated TEEL values that are consistent with Rev. 29A*.
References
Chemical information: https://pubchem.ncbi.nlm.nih.gov/compound/Thallium-chloride
IDLH (1990) for soluble thallium (CASRN: 7440-28-0): https://www.cdc.gov/niosh/idlh/thallium.html
LOC. Appendix C, pg. C-9. https://www.epa.gov/sites/default/files/2015-09/documents/technical_guidance_for_hazard_analysis.pdf
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PAC values marked with a subscript "A" correspond to 60-minute AEGL values.
PAC values marked with a subscript "E" correspond to ERPG values.
PAC values marked by * are >= 10% lower explosive limit (LEL) but < 50% LEL.
PAC values marked by ** are > 50% LEL but < 100% LEL.
PAC values marked by *** are >= LEL.