Double chain quaternary ammonium salt complex phthalic two methylene oxide disinfectant

The invention provides a non-poison and no foreign odor disinfectant containing double-chain quaternary ammonium salt and orthophthalaldehyde. The technology gist of the invention is that the material double-chain quaternary ammonium salt and orthophthalaldehyde are mixed at a ratio of 2 M : 1 M in molar content. The invention has the efficacy of both biquaternary ammonium salt and orthophthalaldehyde and is suitable for epidemic prevention disinfection, disinfection for articles of agriculture and breeding industry, inviroment disinfection, and immersion sterilization of medical device such as wet endured heatlabile endoscopes and surgical instruments.