S P E C I F I C A T I O N S

THYMOL BLUE SODIUM SALT ACS

Synonyms:					Thymol blue sodium salt; 
Thymol blue sodium

CAS No:					62625-21-2

Formula:					C27H29O5SNa

F.W.:						488.58

Appearance:					Yellow to Orange-Brown to Brownish-Black 
powder

Clarity of solution:				To Pass Test

Visual transition interval:			pH 1.2 (red) to pH 2.8 (yellow)
(acid range)

Visual transition interval:			pH 8.0 (yellow) to pH 9.2 (blue)
(alkaline range)

Effective Date:  12/16/19