SPECIFICATIONS

METHYL RED HCL ACS

Synonyms:					2-((4-(dimethylamino)phenyl)azo)-benzoic 
acid, hydrochloride

CAS No:					63451-28-5

Chemical Formula:				C15H15N3O2 * Hcl

Formula Weight:				305.77

Appearance:					Dark purple crystalline powder

Loss on drying:				10% maximum

Clarity of alcohol Solution		Passes test

Visual Transition Interval			pH 4.2 (pink) to pH 6.2 (yellow)

Effective: 01/09/09