Study on the properties of stabilized peracetic acid in single-ingredient

The stable peracetic acid is synthesized with hydrogen peroxide and glacial acetic acid as raw material.The stability,corrosive property and germicidal efficacy of the peracetic acid are studied as well.The results show that the concentration of the peracetic acid decreases by 8.71% after stored at room temperature for 360 days.After immersing in the solution containing 1 500 mg/L of peracetic acid for 72 h,there is no corrosion of carbon steel coupon and stainless steel coupon,slight corrosion of aluminum coupon and moderate corrosion of copper coupon.The average killing logarithm values of Escherichia coli,Staphylococcus aureus,Pseudomonas aeruginosa,Streptococcus faecalis,Clostridium perfringens exposed to solution containing peracetic acid 200 mg/L for 1 min are 5.The average killing logarithm value of spores of Bacillus subtilis var.niger exposed to the solution containing peracetic acid 1 000 mg/L for 3 min is 5.The average killing logarithm value of Candida albicans exposed to the solution containing peracetic acid 400 mg/L for 5 min is 5.The average killing logarithm value of Aspergillus niger exposed to the solution containing peracetic acid 2 000 mg/L for 5 min is 5.