Difference between revisions of "Pyrocatechol"
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== Description == | == Description == | ||
| − | Colorless crystals that turn brown with exposure to air. Pyrocatechol can be synthesized from [http://cameo.mfa.org/materials/fullrecord.asp?name=coal | + | Colorless crystals that turn brown with exposure to air. Pyrocatechol can be synthesized from [http://cameo.mfa.org/materials/fullrecord.asp?name=coal%20tar coal tar] and occurs naturally in some plant materials. Pyrocatechol is used in [http://cameo.mfa.org/materials/fullrecord.asp?name=ink inks], photography, [http://cameo.mfa.org/materials/fullrecord.asp?name=dye dyes], [http://cameo.mfa.org/materials/fullrecord.asp?name=leather leather] tanning and as a light [http://cameo.mfa.org/materials/fullrecord.asp?name=stabilizer stabilizer] and [http://cameo.mfa.org/materials/fullrecord.asp?name=antioxidant antioxidant]. |
== Synonyms and Related Terms == | == Synonyms and Related Terms == | ||
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== Authority == | == Authority == | ||
| − | * | + | * Michael McCann, ''Artist Beware'', Watson-Guptill Publications, New York City, 1979 |
| − | * | + | * Matt Roberts, Don Etherington, ''Bookbinding and the Conservation of Books: a Dictionary of Descriptive Terminology'', U.S. Government Printing Office, Washington DC, 1982 |
| − | * | + | * Richard S. Lewis, ''Hawley's Condensed Chemical Dictionary'', Van Nostrand Reinhold, New York, 10th ed., 1993 |
[[Category:Materials database]] | [[Category:Materials database]] | ||
Revision as of 06:33, 24 July 2013
Description
Colorless crystals that turn brown with exposure to air. Pyrocatechol can be synthesized from coal tar and occurs naturally in some plant materials. Pyrocatechol is used in inks, photography, dyes, leather tanning and as a light stabilizer and antioxidant.
Synonyms and Related Terms
catechol; o-dihydroxybenzene; 1,2-benzenediol; dihydric phenol; pyrocatechin; 1,2-phendiol; Kachin
Other Properties
Soluble in water, ethanol, ether, benzene. Dissolves and turns black in alkaline solutions.
| Composition | C6H4(OH)2 |
|---|---|
| CAS | 120-80-9 |
| Melting Point | 104 |
| Density | 1.371 |
| Molecular Weight | mol. wt.=110.1 |
| Boiling Point | 245 |
Hazards and Safety
Toxic by ingestion, inhalation and skin absorption. Skin contact causes irritation. Combustible. Flash point = 127 C.
LINK: International Chemical Safety Card
Authority
- Michael McCann, Artist Beware, Watson-Guptill Publications, New York City, 1979
- Matt Roberts, Don Etherington, Bookbinding and the Conservation of Books: a Dictionary of Descriptive Terminology, U.S. Government Printing Office, Washington DC, 1982
- Richard S. Lewis, Hawley's Condensed Chemical Dictionary, Van Nostrand Reinhold, New York, 10th ed., 1993