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.