Toluene Exceeds A.C.S. Specifications UniSolv(R) Bipyridyls 10% TOTAL DEGRADATION PRODUCTS 1

10% TOTAL DEGRADATION PRODUCTS 1

10% RNase NONE DETECT SULFATE 0

50% ARSENIC 3 ppm LEAD 10 ppm MERCURY 3

% CARBONATE 0

Test Specification Min Max ASSAY 99% APPEARANCE IDENTIFICATION (FTIR) TO PASS TEST TO PASS TEST DATE OF MANUFACTURE

Toluene Exceeds A.C.S. Specifications UniSolv(R) Bipyridyls 10% TOTAL DEGRADATION PRODUCTS 1Test Specification Min Max ASSAY (by GC) 99. 80% COLOR (APHA) 10 ULTRAVIOLET ABSORBANCE (1 cm cell vs. water) TO PASS TEST TO PASS TEST RESIDUE AFTER EVAPORATION 1 ppm SULFUR COMPOUNDS (as S) 0. 00% SUBSTANCES DARKENED BY (H[@2@]SO[@4@]) TO PASS TEST TO PASS TEST FLUORESCENCE BACKGROUND[n(as QUININE SULFATE) 1 ppb HALOGENATED RES. GC ECD(AS HEPTACHLOR EPOXIDE) 5 ppt WATER 0. 02% RETEST DATE