Paranitroaniline
Revision as of 12:21, 27 April 2013 by (username removed)
Description
Yellow needles or powder. Paranitroaniline is used in the colorimetric test for lignin. The intensity of the color is proportional to the concentration of lignin in the sample.
- Wood pulp - brick red to dark orange color
- Mechanical pulp - orange
- Bleached sulfite pulp - yellow
Synonyms and Related Terms
p-nitroaniline; 4-nitroaniline; 1-amino-4-nitrobenzene; para nitro anilina (Esp.)
Other Properties
Soluble in ethanol, methanol, ether, benzene. Insoluble in water.
| Composition | NO2C6H4NH2 |
|---|---|
| CAS | 100-01-6 |
| Melting Point | 146-151 |
| Density | 1.437 |
| Molecular Weight | mol. wt. = 138.1 |
| Boiling Point | 332 |
Hazards and Safety
Highly toxic by skin absorption, ingestion and inhalation.
Combustible. Flash point = 199 C Explosion risk. Produces toxic fumes.
LINK: International Chemical Safety Card
Authority
- Thomas Gregory, Thomas Gregory, The Condensed Chemical Dictionary, Reinhold Publishing, New York, 3rd ed., 1942
- Susan Budavari (ed.), The Merck Index, Susan Budavari (ed.), Merck Research Labs, Whitehouse Station, NJ, 12th Edition, 1996 Comment: entry 6681
- Book and Paper Group, Book and Paper Group, Paper Conservation Catalog, AIC, 1984, 1989 Comment: Used in test for lignin