Butyl Acetate Exceeds A.C.S. Specifications HPLC Grade Pyrroles 510 nm EXPIRATION DATE

510 nm EXPIRATION DATE

Test Specification Min Max PLATINUM 995 - 1005 ppm 995 - 1005 ppm STANDARDIZED AGAINST NIST 3140 3140 EXPIRATION DATE

Test Specification Min Max MELTING POINT 70 C 70 C CLARITY AND ABSORBANCE OF SOLUTION TO PASS TEST TO PASS TEST SENSITIVITY TO FERROUS IRON TO PASS TEST TO PASS TEST RETEST DATE

Test Specification Min Max ASSAY (w/w) 94 - 98% 94 - 98% COLOR (APHA) 10 CHLORIDE (Cl) 0

Test Specification Min Max ASSAY (CaBr[@2@]) 94%

Butyl Acetate Exceeds A.C.S. Specifications HPLC Grade Pyrroles 510 nm EXPIRATION DATETest Specification Min Max ASSAY (by GC) 99. 00% COLOR (APHA) 10 ULTRAVIOLET ABSORBANCE (1 cm cell vs. water) TO PASS TEST TO PASS TEST RESIDUE AFTER EVAPORATION 5 ppm TITRABLE ACID 1. 6 ueq g n BUTYL ALCOHOL 0. 20% n BUTYL FORMATE 0. 10% BUTYL PROPIONATE 0. 10% SUBSTANCES DARKENED BY (H[@2@]SO[@4@]) TO PASS TEST TO PASS TEST WATER 0. 05% RETEST DATE