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CAS: Chemical Abstract Service Registry Number
Background
Birch tar is obtained from birch (Betula verrucosa). It is a dark brown
liquid that contains phenol, cresol, xylenol, guaiacol, creosol, and
pyrocatechol.
It is used as a component of pharmaceutical preparations.
Rothenberg and Hjorth found that positive patch-test reactions to a
mixture of wood tars consisting of pine, juniper, beech, and birch often
produce false-positive reactions. When a mixture of wood tars is positive,
each tar should be tested individually.
Synonyms
Birch tar
Uses
Topical medications
Cross-Reactions
Unusual Reactions
References
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1. |
Rothenborg, H.W. and N. Hjorth, Allergy to perfumes from toilet soaps and detergents in patients with dermatitis. Archives of Dermatology, 1968. 97: p. 417. |
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2. |
Lahti, A. and M. Hannuksela, Immediate contact allergy to birch leaves and sap. Contact Dermatitis, 1980. 6(7): p. 464-5. |
19-06-2011
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