Tetrahydro-4H-pyran-4-one 98+ Percent size:5 GM 3 ug/g NICKEL 2 ug/g

3 ug/g NICKEL 2 ug/g EXPIRATION DATE DATE OF MANUFACTURE RESIDUAL SOLVENTS TO PASS TEST TO PASS TEST

15% ELEMENTAL IMPURITIES: LEAD (Pb) AS REPORTED AS REPORTED IDENTIFICATION (A) SPECTRUM SPECTRUM IDENTIFICATION (B) RETENTION RETENTION EXPIRATION DATE DATE OF MANUFACTURE APPEARANCE RESIDUAL SOLVENTS AS REPORTED AS REPORTED

3 ABSENCE OF REDUCING SUBSTANCES TO PASS TEST LOSS ON DRYING 1

Test Specification Min Max AVAILABLE CHLORINE AT TIME OF PACKAGING APPROX

Test Specification Min Max ASSAY [Cr(NO[@3@])[@3@][-9H[@2@]O] 99% 99% CHLORIDE (Cl) 0

Tetrahydro-4H-pyran-4-one 98+ Percent size:5 GM 3 ug/g NICKEL 2 ug/gTest Specification Min Max PURITY 98% 98%