This paper reports the qualitative and quantitative analysis of light hydrocarbons produced by radiation degradation of N

N-dimethyl hydroxylamine. These analyses were performed on the gas chromatograph

in which porous layer open tubular column coated with aluminum oxide and flame-ionization detector are used. For the doses between 10 and 1000kGy

the light hydrocarbons produced by radiation degradation of N

N-dimethyl hydroxylamine are methane

ethane

ethene

propane

propene and n-butane. When the concentration of N

N-dimethyl hydroxylamine is 0.2mol/L

the volume fraction of methane is (9.996— 247.5)×10-6

the volume fraction of ethane

propane and n-butane is lower and that of ethene and propene is much lower. With the increase of dose the volume fraction of methane is increased but the volume fraction of ethane

ethene

propane

propene and n-butane is not obviously changed.