PAC Database - Detailed Chemical Data

Chemical Identity
Chemical CAS# UN# Health Code Numbers
Nitrosomorpholine 59-89-2
11.00
4.06
4.10
2.00
3.09
3.10
5.00
10.00
Formula Synonyms
C4H8N2O2 N-NITROSOMORPHOLINE, 4-NITOSOMORPHOLINE, 4-NITROSOMORPHOLINE, MORPHOLINE, 4-NITROSO-, MORPHOLINE, N-NITROSO-, NITROSOMORPHOLINE, NMOR
Physical Properties
Mol Wt State MP (°C) BP (°C) VP (Hg) VP (°C) SG LEL (ppm)
116.12 S 29 225
PAC Values
PAC Values (Original Units: mg/m3)
PAC-1 PAC-2 PAC-3
0.85 9.3 56
Converted PAC Values (ppm)
PAC-1 PAC-2 PAC-3
0.18 2.0 12
Technical Basis
A review of available sources identified the following toxicity data: rat oral LD50 and mouse LCLo. Toxicity data were selected according to the type of exposure, species, and route hierarchies stated in Sections 3.3.1, 3.3.2. The LD50 rat oral was selected as the basis for the TEEL-3, considering source age and species. TEEL-1 and TEEL-2 values were derived according to Table 3.5.
• TEEL-1 = TEEL-2/11
• TEEL-2 = TEEL-3/6
• TEEL-3 = Rat oral LD50 (282 mg/kg)
This review generated TEEL values that were consistent with those in Rev. 29A.
References
Rat oral LD50: Naturwissenschaften., 48(134) 1961; National Center for Biotechnology Information (2023). PubChem Compound Summary for CID 6046, N-Nitrosomorpholine. Retrieved from https://pubchem.ncbi.nlm.nih.gov/compound/N-Nitrosomorpholine
Mouse inhalation LCLo: National Defense Research Committee, Office of Scientific Research and Development, Progress Report., NDCrc-132(SEP1942) via PubChem; National Center for Biotechnology Information (2023). PubChem Compound Summary for CID 6046, N-Nitrosomorpholine. Retrieved from https://pubchem.ncbi.nlm.nih.gov/compound/N-Nitrosomorpholine
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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.