PAC Database - Detailed Chemical Data

Chemical Identity
Chemical CAS# UN# Health Code Numbers
Bromo-1-chloro-5,5-dimethylhydantoin, 3-; (Bromo-1-chloro-5,5-dimethyl-2,4-imidazolidinedione, 3-) 126-06-7
14.01
14.02
8.00
11.00
Formula Synonyms
C5H6BrClN2O2
Physical Properties
Mol Wt State MP (°C) BP (°C) VP (Hg) VP (°C) SG LEL (ppm)
241.47 S 162 25
PAC Values
PAC Values (Original Units: mg/m3)
PAC-1 PAC-2 PAC-3
1.3 14 83
Converted PAC Values (ppm)
PAC-1 PAC-2 PAC-3
0.13 1.4 8.4
Technical Basis
A review of available sources identified multiple animal toxicity data (LD50, LC50, LDLo) for various 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 data of the most preferred species and route, a 4-hour rat LC50, was selected as the TEEL-3 basis and was scaled to a 60-minute equivalent using the ten Berge equation (Section 3.3.4). 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 LC50 (1880 mg/m3/4H)
This review generated TEEL values that are consistent with Rev. 29A*.
References
Chemical information: https://pubchem.ncbi.nlm.nih.gov/compound/3-Bromo-1-chloro-5_5-dimethylhydantoin
Rat LC50: National Technical Information Service., OTS0555154 via PubChem; https://pubchem.ncbi.nlm.nih.gov/compound/3-Bromo-1-chloro-5_5-dimethylhydantoin
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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.