Chlorophenol red, pure indicator grade
Supplier: Thermo Scientific
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Warning
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Synonyms:
3,3-Bis(3-chloro-4-hydroxyphenyl)-3H-benzo[c][1,2]oxathiole 1,1-dioxide, 4,4'-(3H-2,1-Benzoxathiol-3-ylidene)bis[2-chlorophenol] S,S-dioxide
190040100
190040500
ACRO190040100EA
81.4
EUR
ACRO190040100
ACRO190040500
Chlorophenol red, pure indicator grade
Chlorophenol red
Formula:
C₁₉H₁₂Cl₂O₅S MW: 423,27 g/mol Melting Pt: 261 °C Storage Temperature: Ambient |
MDL Number:
MFCD00005877 CAS Number: 4430-20-0 EINECS: 224-619-2 |
Specification Test Results
Appearance | Green to red-brown to brown Powder |
Infrared spectrum | Conforms |
Loss on drying | ≤8 % (110°C) |
Solubility | (0.1 % in ethanol) Clear brown-yellow to dark orange |
UV Lambda max | 572 to 576 nm (in 0.1 N NaOH) |
Specific absorbance A (1%/1cm) | ≥1000 (at Lambda max) On dried substance |
Visual transition interval | from pH 4.8 (yellow) to pH 6.4 (purple) |
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