PAC Database - Detailed Chemical Data
Chemical Identity
| Chemical | CAS# | UN# | Health Code Numbers | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Mercurol; (Mercury nucleate) | 12002-19-6 | 1639 |
15.01
7.01
15.02
4.07
4.09
11.00
7.10
3.09
5.10
|
|||||||||
| Formula | Synonyms | |||||||||||
| C4H4Hg | MERCURY NUCLEATE, MERCURY METAL: COLLOIDAL MERCURY, METALLIC MERCURY, NUCLEATO DE MERCURIO (DOT SPANISH), NUCLÉINATE DE MERCURE (DOT FRENCH), QUICKSILVER | |||||||||||
Physical Properties
| Mol Wt | State | MP (°C) | BP (°C) | VP (Hg) | VP (°C) | SG | LEL (ppm) |
|---|---|---|---|---|---|---|---|
| 252.66 | S pwd |
PAC Values
| PAC-1 | PAC-2 | PAC-3 |
|---|---|---|
| 0.0037 | 0.25 | 0.50 |
| PAC-1 | PAC-2 | PAC-3 |
|---|---|---|
| 0.038 | 2.6 | 5.2 |
Technical Basis
A review of available sources did not identify acute toxicity data or exposure limits for mercurol. Instead, exposure limits for mercury (organo) alkyl compounds (mercury alkyl, CASRN: 7439-97-6; ceiling limits, STELs, TWAs, ERPG-3/ERPG-2, and IDLH) were evaluated for TEEL development. Data sources were selected according to the hierarchy listed in Table 3.1. The mercury (organo) alkyl compounds ERPG-3 and ERPG-2 were selected as the TEEL-3 and TEEL-2, respectively. The mercury TLV-STEL was selected as the TEEL-1 basis and a compound adjustment factor was applied (Section 3.2.2).
• TEEL-1 = MW-adjusted TLV-STEL (mercury (organo) alkyl compounds as Hg, CASRN: 7439-97-6, 0.03 mg/m3)
• TEEL-2 = ERPG-2 (mercury (organo) alkyl compounds as Hg, CASRN: 7439-97-6, 0.25 ppm)
• TEEL-3 = ERPG-3 (mercury (organo) alkyl compounds as Hg, CASRN: 7439-97-6, 0.5 ppm)
This review generated TEEL values inconsistent with Rev. 29A. The Rev. 29A TEEL-3 basis was an HHR-3, from which TEEL-2 and TEEL-1 values were derived (Table 3.5). In the current review, analysts selected mercury (organo) alkyl compound exposure limits (CASRN: 7439-97-6), which are reported as published (ERPG-3, ERPG-2) or weight adjusted (TLV-STEL); these are more preferred sources than the Rev. 29A bases (refer to Sections 3.1 and 3.4).
• TEEL-1 = MW-adjusted TLV-STEL (mercury (organo) alkyl compounds as Hg, CASRN: 7439-97-6, 0.03 mg/m3)
• TEEL-2 = ERPG-2 (mercury (organo) alkyl compounds as Hg, CASRN: 7439-97-6, 0.25 ppm)
• TEEL-3 = ERPG-3 (mercury (organo) alkyl compounds as Hg, CASRN: 7439-97-6, 0.5 ppm)
This review generated TEEL values inconsistent with Rev. 29A. The Rev. 29A TEEL-3 basis was an HHR-3, from which TEEL-2 and TEEL-1 values were derived (Table 3.5). In the current review, analysts selected mercury (organo) alkyl compound exposure limits (CASRN: 7439-97-6), which are reported as published (ERPG-3, ERPG-2) or weight adjusted (TLV-STEL); these are more preferred sources than the Rev. 29A bases (refer to Sections 3.1 and 3.4).
References
Chemical information: https://comptox.epa.gov/dashboard/chemical/details/DTXSID40923188
Mercury (organo) alkyl compounds, as Hg exposure limits: https://www.osha.gov/chemicaldata/503
Mercury (organo) alkyl compounds, as Hg IDLH: https://www.cdc.gov/niosh/idlh/merc-hg.html