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| PHENOL RED | 
| SPECIFICATION SHEET | 
| PRODUCTS | CAS No. | 143-74-8 |  | |
| Chemical Formula | C19H14O5S | |||
| Molecular Weight | 354.38 | |||
| Dye Content | ~95% | |||
| Solution Clarity (Water) | To pass | |||
| Transition Range | pH 6.5 - pH 8.0 | |||
| Absorptivity (pH 1.2) 503 - 506 nm | 1000 - 1100 | |||
| Absorptivity (pH 3.0) 430-435 nm | 600-700 | |||
| Absorptivity (pH 6.5) 430 - 435 nm | 600 - 700 | |||
| Absorptivity (pH 8.0) 557 - 560 nm | 1100 - 1200 | |||
| Loss On Drying (110° c) | < 1% | 
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