PAC Database - Detailed Chemical Data

Chemical Identity
Chemical CAS# UN# Health Code Numbers
Hydroxylamine 7803-49-8
11.01
14.01
14.02
13.00
18.00
4.08
4.05
7.01
7.00
11.00
Formula Synonyms
H3NO HYDROXYLAMINE, OXAMMONIUM
Physical Properties
Mol Wt State MP (°C) BP (°C) VP (Hg) VP (°C) SG LEL (ppm)
33.04 L 34 58 53 32 1.227
PAC Values
PAC Values (Original Units: mg/m3)
PAC-1 PAC-2 PAC-3
0.35 3.9 23
Converted PAC Values (ppm)
PAC-1 PAC-2 PAC-3
0.26 2.9 17
Technical Basis
A review of available sources identified the following: rat and mouse LD50 toxicity data for various routes (intraperitoneal, subcutaneous, and unreported). These sources were selected according to the hierarchy listed in Table 3.1. Toxicity data were evaluated using the type of exposure, species, and route preferability stated in Sections 3.3.1, and 3.3.2.). The rat intraperitoneal LD50 was the most preferred species and route and 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 LD50 (59 mg/kg)
The review generated TEEL values that are consistent with those in Rev. 29A.
References
Rat intraperitoneal LD50: Cancer Research., 26(1448), 1966 [PMID:5911587]. Retrieved from https://pubchem.ncbi.nlm.nih.gov/compound/Hydroxylamine
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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.