PAC Database - Detailed Chemical Data

Chemical Identity
Chemical CAS# UN# Health Code Numbers
Niobium 7440-03-1
15.01
14.02
4.09
11.01
11.00
3.09
10.00
Formula Synonyms
Nb
Physical Properties
Mol Wt State MP (°C) BP (°C) VP (Hg) VP (°C) SG LEL (ppm)
92.1 S 2468 4742 8.57
PAC Values
PAC Values (Original Units: mg/m3)
PAC-1 PAC-2 PAC-3
30 330 2000
Converted PAC Values (ppm)
PAC-1 PAC-2 PAC-3
8.0 88 530
Technical Basis
No technical basis available
References
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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.