Product Description
Catechol is a white crystalline solid that gradually becomes brown when exposed to air and light. It has a molecular weight of 110.12 and a relative density of 1.3 (water = 1).
It has a melting point of 104°C and a boiling point of 245.5°C, and can sublime under suitable conditions. Its vapor pressure is 10 mmHg at 117°C, with a flash point of 127°C and an autoignition temperature of 512°C.
In air, the lower explosive limit (LEL) is 1.4%, while the upper explosive limit (UEL) is not available.
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Chemical Properties
| Product Name: | Catechol |
| Synonyms: | 1,2-Benzenediol (pyrocatechol);1,2-benzenediol[qr];1,2-dihydroxybenzene[qr];2-Hydroxyphenol;2-hydroxyphenol[qr];ai3-03995[qr];Benzene, o-dihydroxy-;benzene,1,2-dihydroxy- |
| CAS: | 120-80-9 |
| MF: | C6H6O2 |
| MW: | 110.11 |
| EINECS: | 204-427-5 |
| Product Categories: | Building Blocks;Chemical Synthesis;Organic Building Blocks;Oxygen Compounds;Polyols;Aromatics;Miscellaneous Reagents;Intermediates;Aromatic Phenols |
| Mol File: | 120-80-9.mol |
| Melting point | 100-103 °C (lit.) |
| Boiling point | 245 °C (lit.) |
| Density | 1,371 g/cm3 |
| Vapor density | 3.8 (vs air) |
| Vapor pressure | 1 mm Hg ( 75 °C) |
| Refractive index | 1.6120 (estimate) |
| Fp | 279 °F |
| Storage temp | Store below +30°C. |
| Solubility | 430g/l |
| Pka | 9.85(at 20℃) |
| Form | Crystalline Flakes |
| Color | white to faintly beige |
| PH | 6 (100g/l, H2O, 20℃) |
| Explosive limit | 1.97%(V) |
| Biological source | synthetic (organic) |
| Water Solubility | 430 g/L (20 ºC) |
| Sensitive | Air & Light Sensitive |
| Merck | 147999 |
| BRN | 471401 |
| Exposure limits | TLV-TWA 5 ppm (～22 mg/m3) (ACGIH). . |
| Stability | Stable. Substances to be avoided include acid chlorides, acid anhydrides, bases, oxidizing agents, nitric acid. Light sensitive; may discolour on exposure to air. Combustible. |
| LogP | 0.93 |
| CAS DataBase Reference | 120-80-9(CAS DataBase Reference) |
| NIST Chemistry Reference | 1,2-Benzenediol(120-80-9) |
| IARC | 2B (Vol. 15, Sup 7, 71) 1999 |
| EPA Substance Registry System | Catechol (120-80-9) |
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Product Application
Catechol (CAS No. 120-80-9) is widely used as a chemical intermediate, especially in the manufacture of rubber additives and fragrance-related compounds.
In pharmaceuticals, it functions as an intermediate for drug synthesis and is used in some local anesthetic formulations. It is also applied in pesticide production, electroplating processes, and analytical chemistry for metal ion detection and analysis.
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