PAC Database - Detailed Chemical Data

Chemical Identity
Chemical CAS# UN# Health Code Numbers
Chlorsulfuron 64902-72-3
15.01
8.00
4.07
3.02
5.10
Formula Synonyms
C12H12ClN5O4S CHLORSULFURON, 2-CHLORO-N-(((4-METHOXY-6-METHYL-1,3,5-TRIAZIN-2-YL)AMINO]CA
Physical Properties
Mol Wt State MP (°C) BP (°C) VP (Hg) VP (°C) SG LEL (ppm)
357.8 S 0.81313 25
PAC Values
PAC Values (Original Units: mg/m3)
PAC-1 PAC-2 PAC-3
3.9 43 260
Converted PAC Values (ppm)
PAC-1 PAC-2 PAC-3
0.27 2.9 18
Technical Basis
A review of available sources identified acute toxicity data (LC50, LD50) for several 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 most preferred species and route toxicity data, a 4-hour rat LC50, was selected as the TEEL-3 basis and it was scaled to a 60-minute equivalent using the ten Berge equation (Section 3.3.4). TEEL-2 and TEEL-1 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 LC50 (>5900 mg/m3/4H)
This review generated PAC values consistent with Rev. 29A.
References
Chemical information: https://pubchem.ncbi.nlm.nih.gov/compound/47491
Rat LC50. Agrochemicals Handbook, with updates, Hartley, D., and H. Kidd, eds., Nottingham, Royal Soc of Chemistry, 1983-86, A579(1984). Retrieved from: https://pubchem.ncbi.nlm.nih.gov/compound/47491
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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.