PAC Database - Detailed Chemical Data
Chemical Identity
| Chemical | CAS# | UN# | Health Code Numbers | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Nitroso-N-methylurea, N- | 684-93-5 | 2811 |
18.00
11.00
4.09
4.06
4.07
2.00
3.05
7.10
3.09
3.02
|
|||||||||
| Formula | Synonyms | |||||||||||
| C2H5N3O2 | N-NITROSO-N-METHYLUREA, 1-METHYL-1-NITROSOUREA, 1-NITROSO-1-METHYLUREA, CARBAMIDE, N-METHYL-N-NITROSO-, METHYLNITROSOUREA, MNU, N-METHYL-N-NITROSOUREA, N-NITROSO-N-METHYLCARBAMIDE, NITROSOMETHYLUREA, NMH, NMM, NMU, NSC 23909, RCRA WASTE NUMBER U177, SKI 24464, SRI 859, UREA, 1-METHYL-1-NITROSO-, UREA, N-METHYL-N-NITROSO- | |||||||||||
Physical Properties
| Mol Wt | State | MP (°C) | BP (°C) | VP (Hg) | VP (°C) | SG | LEL (ppm) |
|---|---|---|---|---|---|---|---|
| 103.08 | S |
PAC Values
| PAC-1 | PAC-2 | PAC-3 |
|---|---|---|
| 0.33 | 3.6 | 22 |
| PAC-1 | PAC-2 | PAC-3 |
|---|---|---|
| 0.078 | 0.85 | 5.2 |
Technical Basis
A review of available sources identified the following acute toxicity data (LD50, LDLo) for several species and routes. Data sources were selected according to the hierarchy listed in Table 3.1. Toxicity data were selected according to type of exposure, species, and route according to the hierarchies stated in Sections 3.3.1, 3.3.2, and evaluated using factors in Tables 3.2, 3.3, and 3.4. The most preferred species a route, a rat oral LD50, was selected as the TEEL-3 basis. TEEL-2 and TEEL-1 values were derived according to Table 3.5.
• TEEL-1 = TEEL-2/11
• TEEL-2 = TEEL-3/6
• TEEL-3 = Rat oral LD50 (110 mg/kg)
This review generated TEEL values that are consistent with Rev. 29A*.
• TEEL-1 = TEEL-2/11
• TEEL-2 = TEEL-3/6
• TEEL-3 = Rat oral LD50 (110 mg/kg)
This review generated TEEL values that are consistent with Rev. 29A*.
References
Zeitschrift fuer Krebsforschung., 69(103), 1967 [PMID:4230610]. Retrieved from: https://pubchem.ncbi.nlm.nih.gov/compound/N-Nitroso-N-methylurea.