A2346412
Catechol , StandardforGC,≥99.5%(GC) , 120-80-9
Synonym(s):
Catechol;Pyrocatechol;1,2-Benzenediol;1,2-Dihydroxybenzene;1,2-Dihydroxybenzene, Catechol
CAS NO.：120-80-9
Empirical Formula: C6H6O2
Molecular Weight: 110.11
MDL number: MFCD00002188
EINECS: 204-427-5
Update time: 2022-07-08
PRODUCT Properties
| 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) |
| Flash point: | 279 °F |
| storage temp. | Store below +30°C. |
| solubility | 430g/l |
| form | Crystalline Flakes |
| pka | 9.85(at 20℃) |
| color | white to faintly beige |
| PH | 6 (100g/l, H2O, 20℃) |
| explosive limit | 1.97%(V) |
| Water Solubility | 430 g/L (20 ºC) |
| Sensitive | Air & Light Sensitive |
| Merck | 14,7999 |
| 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) |
Description and Uses
Catechol is a white crystalline solid. Turnsbrown on contact with light and air. Molecularweight=110.12; Specific gravity (H2O:1)=1.3; Boilingpoint=245.5℃; Freezing/Melting point=104℃. It sublimes readily; Vapor pressure=10 mmHg at 117℃; Flashpoint=127℃; Autoignition temperature=512℃.Explosive Limits in air: LEL=1.4%; UEL-Unknown.Hazard Identification (based on NFPA 704 M RatingSystem): Health 3, Flammability 1, Reactivity 2. Solubilityin water=44%.
Catechol is used in photography, in dyeing fur, and as a topical antiseptic.
Safety
| Symbol(GHS) |    GHS05,GHS06,GHS08 |
| Signal word | Danger |
| Hazard statements | H301+H311-H315-H317-H318-H341-H350 |
| Precautionary statements | P202-P261-P280-P301+P310-P302+P352+P312-P305+P351+P338 |
| Hazard Codes | Xn |
| Risk Statements | 21/22-36/38-68-43 |
| Safety Statements | 22-26-37-39 |
| OEB | A |
| OEL | TWA: 5 ppm (20 mg/m3) [skin] |
| RIDADR | UN 2811 6.1/PG 3 |
| WGK Germany | 2 |
| RTECS | UX1050000 |
| TSCA | Yes |
| HS Code | 2907 29 00 |
| HazardClass | 6.1 |
| PackingGroup | III |
| Hazardous Substances Data | 120-80-9(Hazardous Substances Data) |
| Toxicity | LD50 in mice (mg/kg): 260 orally; 190 i.p. (Lehman) |
