The chemical identity of this compound is unclear; the CASRN listed does not correspond to a compound in the CAS database. Given the unclear definition, analysts used the available chemical formula and molecular weight from the PAC-TEEL database, which is for a similar chemical 4-chloro-benzenesulfonic acid (CASRN: 98-66-8). A review of available sources did not identify exposure limits or acute toxicity data for 5-chloro-2-benzenesulfonic acid. Instead, the acute toxicity data of a similar chemical 4-chloro-benzenesulfonic acid (CASRN: 98-66-8) was evaluated for TEEL development. A rat oral LD50 was selected as the TEEL-3 basis and evaluated using factors in Tables 3.2, 3.3, and 3.4. TEEL-1 and TEEL-2 values were calculated according to Table 3.5.
• TEEL-1 = TEEL-2/11
• TEEL-2 = TEEL-3/6
• TEEL-3 = Rat oral LD50 (benzenesulfonic acid, 4-chloro, CASRN: 98-66-8, >500 mg/kg)
This review generated TEEL values that are consistent with Rev. 29A*.