PAC Database - Detailed Chemical Data

Chemical Identity
Chemical CAS# UN# Health Code Numbers
Osmium tetroxide 20816-12-0 2471
14.01
4.01
11.01
14.02
7.01
11.00
4.09
4.04
4.10
4.07
Formula Synonyms
O4Os OSMIUM TETROXIDE, MILAS^ REAGENT, OSMIC ACID ANHYDRIDE, OSMIUM OXIDE, OSMIUM OXIDE (OSO4), OSMIUM OXIDE OSO4 (T-4)-, OSMIUM TETRAOXIDE, OSMIUM(IV) OXIDE, REAGENTS, MILAS', TETRAOXOOSMIUM, TETRÓXIDO DE OSMIO (DOT SPANISH), TÉTROXYDE D'OSMIUM (DOT FRENCH)
Physical Properties
Mol Wt State MP (°C) BP (°C) VP (Hg) VP (°C) SG LEL (ppm)
254.23 S 40.6 131.2 11 27 5.1
PAC Values
PAC Values (Original Units: ppm)
PAC-1 PAC-2 PAC-3
0.0006 0.0084ₐ 4ₐ
Converted PAC Values (mg/m3)
PAC-1 PAC-2 PAC-3
0.0062 0.087 42
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.