Abstract:

The modified oil ethoxylate sulfonate （SNS-80） is a new green and environmentally friendly anionic surfactant. It is safe and non-irritating, and can be widely used in various detergent products. The viscosity, foaming power and foam stability, wetting, emulsification and calcium soap dispersing ability of SNS-80 were measured with rotational viscometer, Ross-Miles foam analyzer,canvas sedimentation method, shaking method and improved acid titration, respectively. The apparent salt resistance and alkali resistance of SNS-80 were tested at （25±2） and （95±2） ℃. The automatic dishwashing detergent containing SNS-80 was prepared. Its stability and detergency were investigated and compared with the commercial products sold in the market. The results showed that the aqueous solution of SNS-80 has low viscosity and no gel phase region in the whole concentration range, and it has high initial foam and fast defoaming, and has excellent calcium soap dispersing power （1 g SNS-80 can disperse 18.7 g calcium soap）. The apparent salt tolerance is better at low temperature than that at high temperature, and the tolerance to monovalent salt is higher than that of divalent salt. The apparent alkali resistance can reach 168 g/L at （95±2） ℃. Compared with the commercial automatic dishwashing detergent, the samples containing SNS-80 as the main component have better detergency.

Key words: modified oil ethoxylate sulfonate, no gel phase region, low foam, calcium soap dispersing power, automatic dishwashing detergent