TRYPAN BLUE CAS NO.72-57-1

Tests                                                              Results                                  

1. Appearance                                                - Dark Blackish Brown powder          

2. Solubility 0.1% (50%EtOH)                                    - Clear Blue solution               

SPECIFICATION                                                       LIMITS                        Results

Absorption Max.(50% EtOH)                                      :600 - 610nm              605

Absorptivity (A1%/1cm,in 50%EtOH, at max.)          :> 450                         640

Loss On Drying (1100C) 1 hr                                     :< 10%                         3.49%