PAC Database - Detailed Chemical Data
Chemical Identity
| Chemical | CAS# | UN# | Health Code Numbers | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Vanadium pentoxide; (Vanadium(V) oxide) | 1314-62-1 | 2862 |
15.01
11.01
15.02
4.08
4.05
7.01
8.00
7.00
11.00
4.09
|
|||||||||
| Formula | Synonyms | |||||||||||
| O5V2 | VANADIUM PENTOXIDE, C.I. 77938, C.I. 77938, CI 77938, DIVANADIUM PENTAOXIDE, DIVANADIUM PENTOXIDE, DIVANADIUM PENTOXIDE FUME, PENTAOXODIVANADIUM, PENTÓXIDO DE VANADIO (DOT SPANISH), PENTOXYDE DE VANADIUM (DOT FRENCH), VANADIA, VANADIC ANHYDRIDE, VANADIC ANHYDRIDE FUME, VANADIUM (5) OXIDE, VANADIUM (V) OXIDE, VANADIUM OXIDE, VANADIUM OXIDE (V2O5), VANADIUM OXIDE (V4O10), VANADIUM OXIDE FUME, VANADIUM PENTAOXIDE, VANADIUM PENTAOXIDE FUME, VANADIUM PENTOXIDE DUST, VANADIUM(V) OXIDE | |||||||||||
Physical Properties
| Mol Wt | State | MP (°C) | BP (°C) | VP (Hg) | VP (°C) | SG | LEL (ppm) |
|---|---|---|---|---|---|---|---|
| 181.88 | S | 681 | 1750 | 3.35 |
PAC Values
| PAC-1 | PAC-2 | PAC-3 |
|---|---|---|
| 0.045 | 0.50 | 62 |
| PAC-1 | PAC-2 | PAC-3 |
|---|---|---|
| 0.0060 | 0.067 | 8.3 |
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) while the 1994 IDLH reports a vanadium basis for the same source data. Analysts compared the 1990 IDLH and a compound adjusted 1994 IDLH; they selected the 1994 IDLH because it generated a more conservative value (Section 3.2.2). The LOC was considered as a TEEL-2; however, this value was not selected because 1) it is derived from the 1990 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 for vanadium, as vanadium pentoxide (Section 3.4.6), was selected as the TEEL-2. The TEEL-1 value was derived according to Table 3.5.
• TEEL-1 = TEEL-2/11
• TEEL-2 = PEL-C (vanadium dust, as V₂O₅, CASRN: 1314-62-1, 0.5 mg/m³)
• TEEL-3 = MW-adjusted IDLH (1994, vanadium, 35 mg/m3)
This review generated TEEL values inconsistent with Rev. 29A. The Rev. 29A TEEL-3 was the 1990 IDLH, while the current TEEL-3 is a compound adjusted 1994 IDLH, a more conservative value. The 1994 IDLH was used according to Handbook guidelines (Section 4.2-4.3). The Rev. 29A basis was an LOC, that was derived from the 1990 IDLH, while the current basis is a PEL-C. The Rev. 29A and current TEEL-1 use the same methodology (Table 3.5), with differences due to the change in TEEL-2.
• TEEL-1 = TEEL-2/11
• TEEL-2 = PEL-C (vanadium dust, as V₂O₅, CASRN: 1314-62-1, 0.5 mg/m³)
• TEEL-3 = MW-adjusted IDLH (1994, vanadium, 35 mg/m3)
This review generated TEEL values inconsistent with Rev. 29A. The Rev. 29A TEEL-3 was the 1990 IDLH, while the current TEEL-3 is a compound adjusted 1994 IDLH, a more conservative value. The 1994 IDLH was used according to Handbook guidelines (Section 4.2-4.3). The Rev. 29A basis was an LOC, that was derived from the 1990 IDLH, while the current basis is a PEL-C. The Rev. 29A and current TEEL-1 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/Vanadium-pentoxide
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, as vanadium pentoxide (CASRN: 1314-62-1) respirable dust and fume: https://www.osha.gov/chemicaldata/217
OEL-TWA, Germany, vanadium and its inorganic compounds. https://ilv.ifa.dguv.de/limitvalues/63447