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9-OXO-2,7-DINITROFLUORENE

9-OXO-2,7-DINITROFLUORENE 1) industrial 2,7- two nitro fluorene, benzene series solvent, sodium hydroxide and quaternary ammonium salt were added into four bottles. 2) at ambient temperature for 90~100 hours, the air was oxidized for 6~7 hours. 3) vacuum distillation was used to recover the...

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9-OXO-2,7-DINITROFLUORENE


1) industrial 2,7- two nitro fluorene, benzene series solvent, sodium hydroxide and quaternary ammonium salt were added into four bottles.

2) at ambient temperature for 90~100 hours, the air was oxidized for 6~7 hours. 

3) vacuum distillation was used to recover the solvent and concentrate was crystallized.

4) the 2,7- two nitro fluorenone product was obtained by washing and drying alkali. The benzene system solvent is toluene or xylene. 


Compared with the existing technology, the beneficial effect of the invention is as follows: 

1) the reaction temperature is low, the operation is simple and the reaction condition is mild.

2) the cost of sodium hydroxide as catalyst is low. 

3) the benzene system solvent can be decompressed and distilled to recycle and recycle, the washing water is less easy to be treated, and the environmental pollution is small. 

4) the purity of the product gas chromatography is higher than 99.1%, and the yield is higher than 84.8%, which meets the requirements of production.


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Package

The package of all our chemical products reaching up to the industry standard, we usually use kraft drums or woven bags for our powder state products.

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