PAC Database - Detailed Chemical Data

Chemical Identity
Chemical CAS# UN# Health Code Numbers
Hydroxylamine nitrate 13465-08-2
11.01
14.01
14.02
13.00
7.01
4.05
4.07
4.08
11.00
3.05
Formula Synonyms
H4N2O4
Physical Properties
Mol Wt State MP (°C) BP (°C) VP (Hg) VP (°C) SG LEL (ppm)
96.04 L 1.156
PAC Values
PAC Values (Original Units: ppm)
PAC-1 PAC-2 PAC-3
0.16 24 92
Converted PAC Values (mg/m3)
PAC-1 PAC-2 PAC-3
0.63 94 360
Technical Basis
Hydroxylamine nitrate is the salt product of hydroxylamine and nitric acid. A review of available sources did not identify exposure limits or acute toxicity data for hydroxylamine nitrate. Analysts evaluated exposure limits for a component of this compound, nitric acid (AEGLs, CASRN: 7697-37-2) for TEEL development (Section 3.4.6). Analysts selected nitric acid AEGLs due to their priority among Protective Action Criteria (Section 1).
• PAC-1 = AEGL-1 (nitric acid, CASRN: 7697-37-2)
• PAC-2 = AEGL-2 (nitric acid, CASRN: 7697-37-2)
• PAC-3 = AEGL-3 (nitric acid, CASRN: 7697-37-2)
This review generated PAC values inconsistent with Rev. 29A. The Rev. 29A and current sources are consistent, AEGLs for nitric acid (CASRN: 7697-37-2). Differences in values reported are 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/Hydroxylammonium-nitrate
Nitric acid AEGLs retrieved from Table 5-1 (pg. 143): https://www.epa.gov/aegl/nitric-acid-results-aegl-program
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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.