Chlorophenol red
Revision as of 13:30, 27 April 2013 by (username removed)
Description
A brown solid that is used as an acid-base indicator. In solution, chlorophenol red is yellow at pH 5.2 and changes to violet at pH 6.8. It is used in some types of indicator pen pH indicator pens, such as Lineco.
Synonyms and Related Terms
"Chlorphenolrot (Deut.); chlorphenol red; dichlorophenolsulfonephthalein "
Other Properties
Slightly soluble in water.
| Composition | C19H12Cl2O5S |
|---|---|
| CAS | 4430-20-0 |
| Molecular Weight | mol. wt. = 423.07 |
Hazards and Safety
Inhalation, ingestion and skin contact may cause irritation.
Fisher Scientific: MSDS
Authority
- G.S.Brady, G.S.Brady, Materials Handbook, McGraw-Hill Book Co., New York, 1971
- Richard S. Lewis, Richard S. Lewis, Hawley's Condensed Chemical Dictionary, Van Nostrand Reinhold, New York, 10th ed., 1993
- Random House, Random House, Webster's Encyclopedic Unabridged Dictionary of the English Language, Grammercy Book, New York, 1997
- Website address 1, Website address 1 Comment: www.hants.org.uk/museums - conservation termlist
- Aldrich Chemical Catalog
- Sigma Dyes, Stains and Natural Pigments, Infrared Library, Nicolet, 1991-1995 Comment: OMNIC: formula= C19H12Cl2O5S, CAS= 4430-20-0