Eliminating Effects Of Vitamin B-6 And Vitamin C On Udmh And Their Chemical Mechanism

Unsymmetrical dimethylhydrazine (UDMH) is a kind of cheap propellant for rocket luanching. But it is harmful to environment and human body. At present, the majority of UDMH eliminating agents are unsafe and inconvenient for use because of strong oxidizing property. The eliminating effects of vitamin B-6, vitamin C and glacial acetic acid on UDMH are studied. 1 mg vitamin B-6, 1mg vitamin C and I mg glacial acetic acid is added into 10.00ml UDMH solution (1 mu g/ml) respectively, UDMH content is determined respectively in 30 minutes and 60 minutes through amino sodium ferrocyanide (TPF) spectrophotometry method at wavelength 500nm. The results show that vitamin B-6 can eliminate 88% UDMH in 30 minutes. Vitamin C or acetic acid has no significant removal effect on UDMH. The chemical mechanism of vitamin B-6 eliminating UDMH is that pyridoxal and pyridoxal 5 - phosphate monohydrate (PLP) can react with UDMH and generate hydrazone and water.