Document a194367OOyOJxDNeMBVMLabQy

PURPOSE: This is a rangefinding study designed to provide an estimate of . aquatic toxicity using fixed test concentrations and data measurements at predetermined intervals. GENERAL IHPOHMATIOM MRS HASKELL HUMMER: TEST CODE: SPOKSOR: * SUBMITTER'S NOTEBOOK MO.s COMPOSITXOM: 1 COHTAMIHAMTS: Hone OTHER COSES: GRS REGISTRY: PURITY: Ii test comxTiam Moainal concentrations tested: 0, 0.5, 1.0, 5-0, 500, and 5000 mg/L. Dissolved Oaygen and pH: At Teat Initiation At Test CSanpUtfclon Jfeaainal ' Concentreti Realicate (ng/L) 0 0.5 1.0 50 500 S0Q0 PH Replicate A, R 8.6 8.6 8.6 8.6 8.6 6.6 8.5 8.5 8.0 8.0 6.1 6.1 Dissolved oxygen (Mff/L) RtPl^gSfaB AB 8.7 8.7 8.7 8.7 8.7 8.7 8.7 8.7 8.6 8.6 8.6 8.6 pH A 8.3 8.3 8.: 8.3 7.8* 6.3* ,, Dissolved OapMSB /&} plfrsSft S Jfc * 8.3 8.3 8.3 8.3 7.8* 6.2 8.7 8.8 8.7 8.6 8.6* 8.7* 8? 8.7 8.7 m. V7 aReading taken approximately 24 hours after exposure due to total vaortalifey. Page i of 2 Company Ssaamnuitzizeed- Duoes not conidtn TSC^; CBI 3 \ i | iJ RKSULTS Based on visual observations, all solutions were clear at test start, except for 5000 mg/L which was slightly yellow in color. At 24 hours after exposure, the 50 mg/L test solutions were slightly cloudy, and the 500 mg/L test solutions were cloudy. Immobilities were 0, 0, 0, 0, 100, and 100%, respectively. The 48-hour EC50, based on nominal concentrations and immobility, was between 50 and 500 mg/L. All watr quality parameters were within acceptable limits. CONCLUSIONS H-21095 exhibited slight toxicity in a 48-hour, unaerated, static acute test using Daphnia macma. ' MORK BY: t i ' f f l T l I . -- ........... s W. Wetzel cology Associate APPROVED BY: ", Michelle R . Brown, B.A. Study Director DISTRIBUTION : K.D. Dastur (!) J.J Fitzgerald (1) S/nhf Mo/Day/Year Ho/Day/Yea- j in ti [J Y1 D o e snf tfa