PAC Database - Detailed Chemical Data

Chemical Identity
Chemical CAS# UN# Health Code Numbers
Erbium(III) nitrate 10168-80-6
4.00
3.00








Formula Synonyms
ErN3O9
Physical Properties
Mol Wt State MP (°C) BP (°C) VP (Hg) VP (°C) SG LEL (ppm)
353.29 S
PAC Values
PAC Values (Original Units: mg/m3)
PAC-1 PAC-2 PAC-3
1.1 12 70
Converted PAC Values (ppm)
PAC-1 PAC-2 PAC-3
0.076 0.83 4.8
Technical Basis
Analysts used toxicity data for erbium(III) nitrate. Intraperitoneal LD50 data is preferred over intravenous LD50 data.

TEEL-1 = TEEL-2/11
TEEL-2 = TEEL-3/6
TEEL-3: LD50, Rat, intraperitoneal, Dose = 177 mg/kg

Both analysts converged with the values presented in Rev 29A and did not result in a change. Minor differences in value can be attributed to rounding.
TEELs were rounded to two significant figures and converted from referenced units to either ppm or mg/m3, providing both values.
References
Temporary Emergency Exposure Limits for Chemicals: Methods and Practice (DOE-HDBK-1046-2016)
https://chem.nlm.nih.gov/chemidplus/rn/10168-80-6
https://pubchem.ncbi.nlm.nih.gov/compound/159265#section=Adverse-Effects
https://www.osha.gov/annotated-pels/table-z-1
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