BROMO PHENOL BLUE CAS NO.115-39-9

PRODUCT NAME     :           BROMO PHENOL BLUE

CAS NO.                    :           115-39-9

Molecular Formula   :           C₁₉H₁₀Br₄O₅S

Appearance               :           LIGHT PINK POWDER

Structure

TESTS                                                                   LIMITS                                         RESULTS

Transition Range                              pH 3.1 – pH 4.6

                                                            (Greenish Yellow – Blue Violet)      Passes Test

Solubility 0.1% (EtOH)                     clear Solution                                    Passes Test

Absorptivity 1%/1cm,

(pH 3.1) at l max. 437.4 nm                350 – 385                                         362

(pH 4.6) at l max. 591.2 nm               940 – 1000                                        985

Loss On Drying at 110°C (1hr)               <1%                                              0.81%

Dye content by Spectrophotometry      >95%                                           98.5%

Transition Range acc.to ACS              Pass Test                                      (to pass test)