Tetrafluorohydroquinone
Synonym(s):2,3,5,6-Tetrafluorobenzene-1,4-diol;2,3,5,6-Tetrafluorohydroquinone;Tetrafluoro-1,4-dihydroquinone
- CAS NO.：771-63-1
- Empirical Formula: C6H2F4O2
- Molecular Weight: 182.07
- MDL number: MFCD00002340
- EINECS: 212-237-9
- SAFETY DATA SHEET (SDS)
- Update Date: 2024-04-28 16:56:32
What is Tetrafluorohydroquinone?
Chemical properties
SLIGHTLY BEIGE CRYSTALLINE POWDER
The Uses of Tetrafluorohydroquinone
Tetrafluorohydroquinone is a kind of medicine, chemistry of pesticide intermediate, has in fields such as medicine, agricultural chemicals very to use widely.
Synthesis
The diazoides of 2,3,5, 6-tetrafluoro-4-aminophenol is added to the mixture of water, CuSO4.5H20 at 90-110℃ within 1-2 hours and the return water is heated, stratification, oil layer extraction with lye that is a sodium hydroxide solution or potassium hydroxide with a weight concentration of 5-10%, and then collected the extracted lye layer and acidified with hydrochloric acid to obtain the target product 2,3,5, 6-tetrafluorohydroquinone.
storage
Store under inert gas
Properties of Tetrafluorohydroquinone
| Melting point: | 172-174 °C(lit.) |
| Boiling point: | 206℃ |
| Density | 1.765 |
| Flash point: | 78℃ |
| solubility | soluble in Methanol |
| form | powder to crystal |
| pka | 5.90±0.33(Predicted) |
| color | White to Light yellow to Light orange |
| CAS DataBase Reference | 771-63-1(CAS DataBase Reference) |
Safety information for Tetrafluorohydroquinone
| Signal word | Danger |
| Pictogram(s) |
 Corrosion Corrosives GHS05  Exclamation Mark Irritant GHS07 |
| GHS Hazard Statements |
H302:Acute toxicity,oral H318:Serious eye damage/eye irritation |
| Precautionary Statement Codes |
P280:Wear protective gloves/protective clothing/eye protection/face protection. P305+P351+P338:IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing. |
Computed Descriptors for Tetrafluorohydroquinone
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