Cresol red
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Description
A reddish-brown crystalline powder used as an acid-base indicator. Cresol red changes from yellow to red from pH 7.2 - 8.8.
Synonyms and Related Terms
o-cresol-sulfonphthalein; rosso cresolo (It.)
Risks
- Fisher Scientific: MSDS
Physical and Chemical Properties
Soluble in ethanol, water, dilute acid and dilute alkalis.
| Composition | C21H18O5S |
|---|---|
| CAS | 1733-12-6 |
| Melting Point | 290 C (dec) |
| Molecular Weight | mol. wt. = 382.42 |
Resources and Citations
- G.S.Brady, Materials Handbook, McGraw-Hill Book Co., New York, 1971
- Richard S. Lewis, Hawley's Condensed Chemical Dictionary, Van Nostrand Reinhold, New York, 10th ed., 1993
- The Merck Index, Martha Windholz (ed.), Merck Research Labs, Rahway NJ, 10th edition, 1983 Comment: entry 2647
- Sigma Dyes, Stains and Natural Pigments, Infrared Library, Nicolet, 1991-1995 Comment: OMNIC: formula= C21H18O5S, CAS= 1733-12-6