A review of available sources did not identify exposure limits or acute toxicity data for cadmium sulfate hydrate. Instead, analysts evaluated available sources for cadmium nitrate (CdSO4, CASRN: 10124-36-4) and cadmium (CASRN: 7440-43-9). AEGLs for cadmium (CASRN: 7440-43-9) were considered to determine an approximate magnitude of TEELs for cadmium sulfate hydrate. 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.  Analysts selected the most preferred route and species toxicity data, a rat oral LD50, as the TEEL-3 basis and a molecular weight adjustment was applied (Section 3.4.3.2). TEEL-2 and TEEL-1 values were derived according to Table 3.5.
• TEEL-1 = TEEL-2/11
• TEEL-2 = TEEL-3/6
• TEEL-3= MW-adjusted rat oral LD50 (cadmium sulfate, CASRN: 10124-36-4, 280 mg/kg)
This review generated TEEL values that are inconsistent with Rev. 29A. The Rev. 29A TEELs were molecular weight adjusted cadmium AEGLs; per Section 3.2.2, AEGLs may not be weight adjusted. Instead, analysts selected available acute toxicity data for cadmium sulfate as the TEEL-3 basis and applied a molecular weight adjustment (Section 3.4.3.2); TEEL-2 and TEEL-1 values according to Table 3.5.