Product Information

3,4-Difluorobenzoic Acid CAS NO. 455-86-7 is a white to pale yellow crystalline powder at room temperature. The molecular formula is C7H4F2O2, and the molecular weight is 158.10. The density is 1.432 g/cm3. Melting point is 120-122 °C. Boiling point is 257ºC at 760 mmHg. The flash point is 109.2ºC.

Features

3,4-Difluorobenzoic Acid CAS NO. 455-86-7 is a substituted benzoic acid compound. Substituted benzoic acids are a kind of organic synthesis intermediates that can be mainly developed, which can be used in the production of organic chemical raw materials and various pesticides, and are also synthetic intermediates of dyes, pesticides and medicines. It is the raw material of preservatives and fragrances, and can also be used for liquid crystal materials, which has the advantages of high value and good market prospects.

Preparation

In a dry 100mL round-bottomed flask, add Wittig reagent 3, 4-difluorophenyl methyl triphenylphosphine 416mg (1mmol), add THF 30ml, 1ml (9mmol) 30% hydrogen peroxide solution, 50°C nitrogen reaction under protection. After 1-2h, the reaction of the raw material wittig reagent was almost complete. After the reaction, most of the solvent was removed by rotary evaporation, 10 mL of dichloromethane and 10 mL of water were added, and the mixture was extracted by liquid separation. The organic phase was dried by adding anhydrous sodium sulfate and concentrated. The crude product was isolated as a pale yellow solid, 134 mg, 85% product.

Specifications

CAS NO. 455-86-7

Appearance: Off-White to white crystal powder
Assay : 98%min

Melt point: 122-125ºC

LOD: 0.5%max

Packing: 25kg net fiber drum

Storage Condition: Store in a cool, dry place. Store in a tightly closed container. Stable under normal temperatures and pressures.

Safety Info