Dinitrophenol
Revision as of 06:49, 24 July 2013 by (username removed)
Description
A yellow crystalline material used in the manufacture of sulfur dyes and photographic developer. Dinitrophenol is a chromotropic pH indicator that is colorless below pH 2.6 and yellow above pH 4.4. It is also used as a wood preservative, an insecticide, and a reagent for the detection of potassium and ammonium ions.
Synonyms and Related Terms
2,4-dinitrophenol; alpha-dinitrophenol; dinitrophenol (Fr.); Aldifen
Other Properties
Soluble in ethanol, ether, benzene and chloroform. Slightly soluble in water.
| Composition | C6H3OH(NO2)2 |
|---|---|
| CAS | 51-28-5 |
| Melting Point | 112-114 |
| Density | 1.683 |
| Molecular Weight | mol. wt.=184.11 |
Hazards and Safety
Combustible. Explosion hazard when dry.
Highly toxic by skin absorption, ingestion and inhalation.
International Chemical Safety Card
Authority
- The Merck Index, Susan Budavari (ed.), Merck Research Labs, Whitehouse Station, NJ, 12th Edition, 1996
- Richard S. Lewis, Hawley's Condensed Chemical Dictionary, Van Nostrand Reinhold, New York, 10th ed., 1993