P304+P340：IF INHALED: Remove victim to fresh air and Keep at rest in a position comfortable for breathing.
P305+P351+P338：IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.
P405：Store locked up.
Description
3,3',5,5'-Tetramethylbenzidine dihydrochloride anhydrous is a salt form of 3,3′,5,5′-Tetramethylbenzidine (TMB). 3,3′,5,5′-Tetramethylbenzidine (TMB) is a peroxidase substrate suitable for use in ELISA procedures, producing soluble bend products usually pale blue in color with spectrophotometric activity at 370 or 620-650 nm. Substrate activity is halted with addition of 2M H2SO4 and read at 450 nm.
