PAC Database - Detailed Chemical Data

Chemical Identity
Chemical CAS# UN# Health Code Numbers
Sodium hydroxide 1310-73-2 1823
14.01
4.01
11.01
14.02
4.08
11.00
4.07
10.00
4.11
4.12
Formula Synonyms
HNaO CAUSTIC SODA, BEAD, CAUSTIC SODA, CAUSTIC SODA, FLAKE, CAUSTIC SODA, GRANULAR, CAUSTIC SODA, SOLID, HIDRÓXIDO DE SODIO, EN ESCAMAS (DOT SPANISH), HIDRÓXIDO DE SODIO, EN GRÁNULOS (DOT SPANISH), HIDRÓXIDO DE SODIO, GRANULAR (DOT SPANISH), HIDRÓXIDO DE SODIO, SECO (DOT SPANISH), HIDRÓXIDO DE SODIO, SÓLIDO (DOT SPANISH), HYDROXYDE DE SODIUM, EN FLOCONS (DOT FRENCH), HYDROXYDE DE SODIUM, EN GRANULÉS (DOT FRENCH), HYDROXYDE DE SODIUM, EN PERLES (DOT FRENCH), HYDROXYDE DE SODIUM, SEC (DOT FRENCH), HYDROXYDE DE SODIUM, SOLIDE (DOT FRENCH), CAUSTIC SODA, SOLUTION, LYE, SODA LYE, SODIUM HYDRATE, SODIUM HYDROXIDE, SODIUM HYDROXIDE, BEAD, SODIUM HYDROXIDE, DRY, SODIUM HYDROXIDE, FLAKE, SODIUM HYDROXIDE, GRANULAR, SODIUM HYDROXIDE, SOLID, SODIUM HYDROXIDE (CORROSIVE LIQUID, BASIC, ORGANIC, N.O.S.), AETZNATRON, ASCARITE, COLLO-GRILLREIN, COLLO-TAPETTA, WHITE CAUSTIC, SOSA CAÚSTICA, EN ESCAMAS (DOT SPANISH), SOSA CAÚSTICA, EN GRANULOS (DOT SPANISH), SOSA CAÚSTICA, GRANULAR (DOT SPANISH), SOSA CAÚSTICA, SÓLIDA (DOT SPANISH), SOUDE CAUSTIQUE, EN FLOCONS (DOT FRENCH), SOUDE CAUSTIQUE, EN GRANULÉS (DOT FRENCH), SOUDE CAUSTIQUE, EN PERLES (DOT FRENCH), SOUDE CAUSTIQUE, SOLIDE (DOT FRENCH)
Physical Properties
Mol Wt State MP (°C) BP (°C) VP (Hg) VP (°C) SG LEL (ppm)
40 S 323 1388 513 2.13
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 exposure limits for this chemical including ERPGs, IDLHs, EEGLs, and PEL and REL limits for this chemical. The ERPGs were selected as the TEELs due to their priority among the emergency exposure limits (Section 1).
• TEEL-1 = ERPG-1
• TEEL-2 = ERPG-2
• TEEL-3 = ERPG-3
This review generated TEEL values consistent with Rev. 29A*.
References
Chemical information: https://pubchem.ncbi.nlm.nih.gov/compound/Sodium-Hydroxide.
ERPGs: https://cameochemicals.noaa.gov/chemical/1499
Other exposure limits: https://www.cdc.gov/niosh/idlh/1310732.html
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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.