METHYL RED CAS NO.493-52-7

PRODUCT NAME      :           METHYL RED

Synonyms                :           [2-[4-(Dimethylamino)phenyl azo] Benzoic Acid]  

CAS NO.                    :           493-52-7

C.I. NO.                     :           13020

Molecular Formula :           C₁₅H₁₅N₃O₂

Formula Weight      :           269.31

Appearance              :           Red Powder  

Structure                  :          

TESTS                                                                        LIMITS                        RESULTS

Solubility 0.1% (EtOH)                            Red Solution                        Passes Test

Transition range                                         pH4.2 - 6.2                                                  

                                                                        Red     -Yellow                                             

Solubility 0.1%(EtOH)                             Red Solution                        Passes Test

Loss on drying at 110?C (1 hr)               2.22%                       (<3%)