PAC Database - Detailed Chemical Data

Chemical Identity
Chemical CAS# UN# Health Code Numbers
Sodium monoxide; (Sodium oxide) 12401-86-4 1825
14.01
14.02
11.01
4.07
Formula Synonyms
NaO SODIUM MONOXIDE, MONÓXIDO DE SODIO (DOT SPANISH), MONOXYDE DE SODIUM (DOT FRENCH)
Physical Properties
Mol Wt State MP (°C) BP (°C) VP (Hg) VP (°C) SG LEL (ppm)
38.99 S 2.27
PAC Values
PAC Values (Original Units: mg/m3)
PAC-1 PAC-2 PAC-3
0.50 5.0 50
Converted PAC Values (ppm)
PAC-1 PAC-2 PAC-3
0.31 3.1 31
Technical Basis
A review of available sources identified ERPG values for a similar chemical, sodium hydroxide (CASRN: 1310-73-2). The ERPGs were selected as the TEELs due to their priority among the emergency exposure limits (Section 1).
• TEEL-1 = ERPG-1 (sodium hydroxide, CASRN: 1310-73-2)
• TEEL-2 = ERPG-2 (sodium hydroxide, CASRN: 1310-73-2)
• TEEL-3 = ERPG-3 (sodium hydroxide, CASRN: 1310-73-2)
This review generated TEEL values consistent with those found in Rev. 29A.
References
ERPGs (sodium hydroxide, CASRN: 1310-73-2) https://cameochemicals.noaa.gov/chemical/9073
General information, sodium monoxide retrieved from: https://pubchem.ncbi.nlm.nih.gov/compound/Sodium-monoxide.
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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.