PAC Database - Detailed Chemical Data

Chemical Identity
Chemical CAS# UN# Health Code Numbers
Neodymium nitrate, pentahydrate 14517-29-4
11.01
3.11
10.00
15.02
4.11
15.01
4.07
4.10
Formula Synonyms
Nd.(N.O3)3.6(H2.O)
Physical Properties
Mol Wt State MP (°C) BP (°C) VP (Hg) VP (°C) SG LEL (ppm)
438.35 S hygr
PAC Values
PAC Values (Original Units: ppm)
PAC-1 PAC-2 PAC-3
0.46 5.1 30
Converted PAC Values (mg/m3)
PAC-1 PAC-2 PAC-3
8.2 91 540
Technical Basis
Exposure and toxicity data were not found for this chemical. The TEEL-3 value was derived from a similar chemical basis: neodymium nitrate (CASRN: 10045-95-1) PAC values using a compound adjustment factor of 1.271-3. TEEL-2 and TEEL-1 values were derived from this TEEL-3 with the fill gap adjustment factors described in Table 3.5.
• TEEL-1 = TEEL 2/11
• TEEL-2 = TEEL 3/6
• TEEL-3 = Compound adjusted PAC values for neodymium trinitrate (rat oral LD50, 2072 mg/kg)
This review generated TEEL estimates comparable to those of Rev. 29A. Minor differences may be attributed to differences in rounding; this review follows the rules listed in Sections 3.4.2 and 3.4.7.2.
References
Compound adjustment factor: Section 3.2.2.
National Center for Biotechnology Information (2023). PubChem Compound Summary for CID 18769439, Neodymium nitrate pentahydrate. Retrieved from https://pubchem.ncbi.nlm.nih.gov/compound/Neodymium-nitrate-pentahydrate.
Rat oral LD50: Environmental Quality and Safety, Supplement., 1(1), 1975 [PMID:1057514]; National Center for Biotechnology Information (2023). PubChem Compound Summary for CID 159254, Neodymium trinitrate. Retrieved from https://pubchem.ncbi.nlm.nih.gov/compound/Neodymium-trinitrate.
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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.