Chloride is an anion of chlorine; it is found in salts (sodium chloride, hydrogen chloride) and has a role as an electrolyte in the human body. A review of available sources identified AEGLs for chlorine (CASRN: 7782-50-5) and hydrogen chloride (CASRN: 7647-01-0) as possible TEELs due to their priority among the emergency exposure limits (Section 1). The potential health hazards of chloride are undefined without a known counterion; however, hydrogen chloride is a conservative estimate. Therefore, the hydrogen chloride AEGLs were selected as TEELs. While this may be conservative, given that the counterion is undefined, this was determined appropriate for TEEL development.
• TEEL-1 = AEGL-1 (hydrogen chloride, CASRN: 7647-01-0)
• TEEL-2 = AEGL-2 (hydrogen chloride, CASRN: 7647-01-0)
• TEEL-3 = AEGL-3 (hydrogen chloride, CASRN: 7647-01-0)
This review generated TEEL values inconsistent with those found in Rev. 29A. The Rev. 29A TEELs were developed from AEGLs for chlorine. While this approach was considered, the current review selected hydrogen chloride AEGLs instead. These values are likely still conservative, however additional analysis could not be completed without a defined counterion.