Reagents

Triethylamine, >=99.5%

Ammonium iron(II) sulfate hexahydrate, ACS, 99.0% min

Ammonium iron(II) sulfate hexahydrate, ACS, 99.0% min

Ethylparaben Pharmaceutical Secondary Standard, MilliporeSigma

Ethylparaben Pharmaceutical Secondary Standard, MilliporeSigma

N-Methylformamide, 99%

Methylparaben Pharmaceutical Secondary Standard, MilliporeSigma

Methylparaben Pharmaceutical Secondary Standard, MilliporeSigma

1-Bromonaphthalene, 97%

Sodium Borohydride

MilliporeSigma™ Immersion Oil for Microscopy

MilliporeSigma™ Immersion Oil for Microscopy

ALDRICH Butyl 4-hydroxybenzoate, Greater Than or Equal to 99.0% GC

ALDRICH Butyl 4-hydroxybenzoate, Greater Than or Equal to 99.0% GC

Isopropyl Alcohol 99%, (IPA 99%) USP Grade

Isopropyl Alcohol 99%, (IPA 99%) USP Grade

Perchloric acid, 70%, ACS

KF Titrant, Stable, 5.0 mg/ml