Guanine
Description
A purine type nucleic acid extracted from guano and fish scales. Guanine crystals are rhombic platelets composed of multiple layers. They are transparent but have a high index of refraction that produces a pearly luster. Guanine is used as a nacreous pigment called essence pearl essence.
Synonyms and Related Terms
2-amino-6-oxypurine; Natural White 1; CI 75170; gaunina (Esp., Port.); pearl essence; imitation pearl; nacreous pigment; guanin; guanine enol; dew pearl; 2-amino-1,7-dihydro-6H-purin-6-one; 2-aminohypoxanthine; 2-amino hypoxanthine
Other Properties
Soluble in ammonia water, dilute bases, dilute acids. Slightly soluble in ethanol, ether. Insoluble in water.
| Composition | C5H5H5O |
|---|---|
| CAS | 73-40-5 |
| Melting Point | 360 |
| Molecular Weight | mol. wt. = 151.13 |
Hazards and Safety
Skin contact may cause irritation.
Possible carcinogen. Teratogen and mutagen (animals)
Fisher Scientific: MSDS
Authority
- G.S.Brady, G.S.Brady, Materials Handbook, McGraw-Hill Book Co., New York, 1971 Comment: p. 379
- Richard S. Lewis, 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 4593
- Website address 1, Website address 1 Comment: http://www.coloria.net/varita.htm - NW1, CI75170, used as pigment by Francois Jaquin in 1656