Document 3QnMgozYRypmjZZ0R2gdYp6en

AR226-3004 DuPont HLR2S7-S4 HASKELL LABORATORY FOR TOXICOLOGY AND INDUSTRIAL MEDICINE STATIC. ACUTE 96-HOUR SCREENING TEST OF H-20431 TO FATHEAD MINNOWS. Plimphakt prorm to PURPOSE: This is a ranflefinding study dsslgiwd to prcwd# u n . *< mru-ontrations and data measurements at predetermined intervals. Page 1 of 2 Company Sanitized. Doss not contain TSC CBI i * DuPont HLR 267-94 HASKELL LABORATORY FOR TOXICOLOGY AND INDUSTRIAL MEDICINE STATIC, ACUTE 96-HOUR SCREENING TEST OF H-20431 TO FATHEAD MINNOWS, Plmephalea prometaa, Continued TEST CONDITIONS Nominal concentrations tested: 0. 0.5.1.0, 50. 500 and 5000 mg/L. Dissolved Oxygen and pH: Nominal ncentratlon (mg/L) At test initiation, 0 Hours Dissolved Oxygen pH (mg/L) 0 0.5 1.0 50 500 5000 8.5 7.4 8.6 7.4 8.5 7.4 8.4 7.3 8.4 7.0 8.3 6.0 " Readings taken at 24 hours due to total mortality. bReadings taken at approximately 4 hours due to to!a: mortality. At test completion, 96 Hours Dissolved Oxygen pH (mg/L) 6.9 6.5 6.0 8.1 8.5b 8.3b 7.2 7.2 7.2 7.1 7.1b 6.2h RESULTS Based on visual observations, all solutions were dear except 50. 500 and 5000 mg/L which were cloudy. All solutions had air bubbles collecting on the inside of test vessels. Mortalities were 0. 0 ,0 ,1 0 0 ,1 0 0 , and 100%, respectively. All water quality parameters were within acceptaole limits. Loading (0.08 g/L) was also within acceptable limits. CONCLUSIONS H-20431 exhibited moderate toxicity in a 96-hour, unaerated, static acute test using fathead minnows, Pirnaphalos promelas. WORK BY: APPROVED BY: <_ Jaimes W. Wetzel Toxicology Associate M// ; 'Michelle R. Brown. B. A. / Study Director A j/ Mo/Day/Year Mo/Day/Year DISTRIBUTION: K. D. Dastur (1) E. L. Holloway (1) K. G. Raiford (1) M. R. Brown (1) 2 Company Sanitized. Does not contain TSCA CBI