PAC Database - Detailed Chemical Data

Chemical Identity
Chemical CAS# UN# Health Code Numbers
Hydrazine nitrate; (Hydrazinium nitrate) 13464-97-6
4.00
3.00
Formula Synonyms
H4N2-HNO3
Physical Properties
Mol Wt State MP (°C) BP (°C) VP (Hg) VP (°C) SG LEL (ppm)
95.06 S 70
PAC Values
PAC Values (Original Units: ppm)
PAC-1 PAC-2 PAC-3
0.10 13 35
Converted PAC Values (mg/m3)
PAC-1 PAC-2 PAC-3
0.39 51 140
Technical Basis
A review of available sources did not identify exposure limits or acute toxicity data for this chemical. Instead, analysts evaluated AEGLs for similar chemicals, hydrazine (CASRN: 302-01-2) and nitric acid (CASRN: 7697-37-2), for TEEL development. Of these compounds, hydrazine has more conservative exposure limits. Considering this, the AEGLs for hydrazine were selected due to their priority among Protective Action Criteria (Section 1).
• PAC-1 = AEGL-1 (hydrazine, CASRN: 302-01-2)
• PAC-2 = AEGL-2 (hydrazine, CASRN: 302-01-2)
• PAC-3 = AEGL-3 (hydrazine, CASRN: 302-01-2)
This review generated PAC values inconsistent with Rev. 29A; the Rev. 29A and current sources are consistent, AEGLs for hydrazine (CASRN: 302-01-2). Differences in reported values is due to Rev. 29A applying a molecular weight adjustment; the current ppm values are unmodified, per Section 3.2.2.
References
Chemical information: https://pubchem.ncbi.nlm.nih.gov/compound/Hydrazine_-mononitrate.
AEGLs, hydrazine (CASRN: 302-01-2) (Table 6-1) retrieved from: https://www.epa.gov/aegl/hydrazine-results-aeglprogram
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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.