NILE CHEMICALS

BROMOTHYMOL BLUE

SPECIFICATION SHEET

CAS No. 76 - 59 - 5
Chemical Formula C27H28Br2O5S
Molecular Weight 624.40
Melting Point 200 - 202 c
Dye Content ~95%
Solution Clarity To pass
Transition Range pH 5.8 - 7.6
Yellow - Blue
Absorption Max (pH 5.8) 430 - 435 nm
Absorption Max (pH 7.6) 615 - 618 nm
Absorptivity (1%/1cm) pH 5.8 260 - 300
Absorptivity (1%/1cm) pH 7.6 470 - 520
Loss On Drying (110 c) < 3%

Also Available Bromothymol Blue Sodium Salt Cas no 34722-90-2

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It must be recognised that the physical and chemical properties of any product may not be fully understood and that new, possibly hazardous products may arise from reactions between chemicals. The information given in this data sheet is based on our present knowledge and shall not constitute a guarantee for any specific product features and shall not establish a legally valid contractual relationship.

 

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