PAC Database - Detailed Chemical Data

Chemical Identity
Chemical CAS# UN# Health Code Numbers
Dichloran; (2,6-Dichloro-4-nitroaniline; Resisan) 99-30-9
13.00
6.00
15.01
11.01
4.05
7.01
4.06
3.02
3.10
3.01
Formula Synonyms
C6.H4.Cl2.N2.O2
Physical Properties
Mol Wt State MP (°C) BP (°C) VP (Hg) VP (°C) SG LEL (ppm)
207.02 S needles 191 20
PAC Values
PAC Values (Original Units: mg/m3)
PAC-1 PAC-2 PAC-3
7.2 79 480
Converted PAC Values (ppm)
PAC-1 PAC-2 PAC-3
0.85 9.3 57
Technical Basis
A review of available sources identified several acute toxicity data (LD50, LC50) 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. Although there were two preferred inhalation data (rat LC50), one did not have a source listed, and the other had an unclear duration listed; therefore, they were not further evaluated. The most preferred species and route data, a rat oral LD50, was selected as the TEEL-3 basis. TEEL-1 and TEEL-2 values were derived according to Table 3.5
• PAC-1 = TEEL-1 = TEEL-2/11
• PAC-2 = TEEL-2 = TEEL-3/6
• PAC-3 = TEEL-3 = Rat oral LD50 (2400 mg/kg)
This review generated PAC values consistent with Rev. 29A*.
References
Chemical information: https://pubchem.ncbi.nlm.nih.gov/compound/Dichloran
Rat oral LD50: Lewis, R.J. Sr. (ed) Sax's Dangerous Properties of Industrial Materials. 11th Edition. Wiley-Interscience, Wiley & Sons, Inc. Hoboken, NJ. 2004., p. 3149. Retrieved from: https://pubchem.ncbi.nlm.nih.gov/compound/Dichloran
Rat LC50 (5400 mg/m3/1H) (No source reported): https://pubchem.ncbi.nlm.nih.gov/compound/Dichloran
Rat LC50 (>21600 mg/m3) (Unclear duration): Pesticide Manual., 9(265), 1991. Retrieved from: https://pubchem.ncbi.nlm.nih.gov/compound/Dichloran
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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.