PAC Database - Detailed Chemical Data
Chemical Identity
| Chemical | CAS# | UN# | Health Code Numbers | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Vanadyl sulfate; (Oxysulfatovanadium) | 27774-13-6 | 2931 |
14.01
11.01
15.02
4.05
7.01
8.00
7.00
4.09
4.06
4.10
|
|||||||||
| Formula | Synonyms | |||||||||||
| O5SV | VANADYL SULFATE, C.I. 77940, OXO(SULFATO)VANADIUM, OXOVANADIUM(IV) SULFATE, SULFATE DE VANADYLE (DOT FRENCH), SULFATO DE VANADILO (DOT SPANISH), VANADIUM OXIDE SULFATE (VO(SO4)), VANADIUM OXOSULFATE, VANADIUM OXYSULFATE (VOSO4), VANADIUM SULFATE (VO(SO4)), VANADIUM, OXOSULFATO-, VANADIUM, OXO[SULFATO(2-)-O]-, VANADYL MONOSULFATE, VANADYL SULFATE (VO(SO4)), VANADYL SULPHATE | |||||||||||
Physical Properties
| Mol Wt | State | MP (°C) | BP (°C) | VP (Hg) | VP (°C) | SG | LEL (ppm) |
|---|---|---|---|---|---|---|---|
| 163 | S |
PAC Values
| PAC-1 | PAC-2 | PAC-3 |
|---|---|---|
| 0.081 | 0.90 | 110 |
| PAC-1 | PAC-2 | PAC-3 |
|---|---|---|
| 0.012 | 0.14 | 16 |
Technical Basis
A review of available sources identified exposure limits for vanadium (V as V₂O₅; CASRN: 1314-62-1, IDLH, PEL-C, REL-C, TWAs). Data sources were selected according to the hierarchy listed in Table 3.1. The 1990 and 1994 IDLH were evaluated as a TEEL-3; the 1990 IDLH reports a vanadium pentoxide basis (V2O5, CASRN: 1314-62-1), while the 1994 IDLH reports a vanadium basis for the same source data. As such, analysts selected the 1994 IDLH as the TEEL-3. The LOC was considered as a TEEL-2; however, this value was not selected because 1) it is derived from the IDLH, which was not selected as a TEEL-3, and 2) it is an order of magnitude greater than other TEEL-2 available bases (ceiling limits, TWAs; Section 3.3.1). Instead, the most preferred vanadium ceiling limit, the PEL-C, was selected as the TEEL-2 and a compound adjustment factor was applied (Section 3.2.2). The TEEL-1 value was derived according to Table 3.5.
• TEEL-1 = TEEL-2/11
• TEEL-2 = MW-adjusted PEL-C (vanadium dust and fume, as V₂O₅, CASRN: 1314-62-1, 0.5 mg/m³)
• TEEL-3 = MW-adjusted IDLH (1994, vanadium, 35 mg/m3)
This review generated TEEL-2 and TEEL-1 values inconsistent with Rev. 29A. The Rev. 29A and current TEEL-3 values, source, and methodology are consistent. The 1994 IDLH was used according to Handbook guidelines (Section 4.2-4.3). The Rev. 29A basis is a molecular weight adjusted REL-C, while the current basis is a PEL-C, a more preferred source (Table 3.1). The Rev. 29A and current use the same methodology (Table 3.5), with differences due to the change in TEEL-2.
• TEEL-1 = TEEL-2/11
• TEEL-2 = MW-adjusted PEL-C (vanadium dust and fume, as V₂O₅, CASRN: 1314-62-1, 0.5 mg/m³)
• TEEL-3 = MW-adjusted IDLH (1994, vanadium, 35 mg/m3)
This review generated TEEL-2 and TEEL-1 values inconsistent with Rev. 29A. The Rev. 29A and current TEEL-3 values, source, and methodology are consistent. The 1994 IDLH was used according to Handbook guidelines (Section 4.2-4.3). The Rev. 29A basis is a molecular weight adjusted REL-C, while the current basis is a PEL-C, a more preferred source (Table 3.1). The Rev. 29A and current use the same methodology (Table 3.5), with differences due to the change in TEEL-2.
References
Chemical information: https://pubchem.ncbi.nlm.nih.gov/compound/Vanadyl-sulfate.
Vanadium IDLH (1994): https://www.cdc.gov/niosh/idlh/vandust.html
Vanadium pentoxide LOC; Appendix C, pg. C-9. Retrieved from: https://www.epa.gov/sites/default/files/2015-09/documents/technical_guidance_for_hazard_analysis.pdf
Exposure limits vanadium, respirable dust and fume (as V2O5): https://www.osha.gov/chemicaldata/217
OEL-TWA, Germany, vanadium and its inorganic compounds. https://ilv.ifa.dguv.de/limitvalues/63447