BROMOTHYMOL BLUE SODIUM SALT ACS GRADE

C.A.S. No.	34722-90-2
M.F.	C27H28Br2O5S
M.W.	646.38gm/mole

Specifications:

Dye Content (by Spectrophotometry)	>90%
Transition Range	pH 5.8-7.6
	Yellow-Blue
Solubility 0.1% (Dist. Water)	Almost Clear solution
Absorption maximum (pH 5.8) ?1max	430-435nm
Absorption maximum (pH 7.6) ?2max	615-618nm
Absorptivity (A1%/1cm at pH 5.8 at ?1max)	250-280
Absorptivity (A1%/1cm at pH 7.6 at ?2max)	400-500
Loss On Drying (110°C)	5%

Supply Locations

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