Ortho-phenyl phenol
Description
A Fungicide and Bactericide. Ortho-phenyl phenol (OPP) inhibits the growth of fungi and bacteria. It is effective at concentrations as low as 0.05% by weight. OPP is an ingredient in Lysol® and has been used as a fungicides in Starch, Glue, and Polyvinyl acetate emulsions. Dilute solutions have also been used for removing lichens from Granite. OPPNa, the sodium salt of ortho-phenyl phenol, is more soluble.
Synonyms and Related Terms
phenyl phenol; orthophenyl phenol; OPP; 2-phenylphenol; 2-biphenylol; 2-hydroxybiphenyl; Dowicide 1; Dowicide 1 [Dow Chemical]; Topane S [ICI]; Lysol® [Sterling]; Dowicide A (OPPNa) [Dow Chemical]; Topane WS (OPPNa) [ICI]; Mystox WFA (OPPNa) [Catomance]
Risks
- Ingestion is toxic, especially to small mammals (e.g., cats) and aquatic organisms. LD50 = 2480 mg/kg
- Inhalation and contact may cause irritation and redness.
- Combustible. Flash point = 124 C (255 F)
- May discolor textiles, especially silk.
- ThermoFisher SDS
Physical and Chemical Properties
Insoluble in water. Soluble in alcohols, glycols and sodium hydroxide solution..
| Composition | C6H5C6H4OH |
|---|---|
| CAS | 90-43-7 |
| Melting Point | 58-60 C |
| Density | 1.217 g/ml |
| Molecular Weight | mol. wt. = 170.2 |
| Boiling Point | 286 C |
Resources and Citations
- J.Haines, S.Kohler "An Evaluation of Ortho-Phenyl Phenol as a Fungicidal Fumigant for Archives and Libraries" JAIC 25:49-55, 1986
- Richard S. Lewis, Hawley's Condensed Chemical Dictionary, Van Nostrand Reinhold, New York, 10th ed., 1993
- Pam Hatchfield, Pollutants in the Museum Environment, Archetype Press, London, 2002
- Marie Svoboda, Conservation Survey Index, unpublished, 1997
- Conservation Materials Ltd., Catalog
- A Glossary of Paper Conservation Terms, Margaret Ellis (ed.), Conservation Center of the Institute of Fine Arts, New York City, 1998