The amino-acid imidazoline amphoteric surfactant was prepared from dichloroethane and vegetable-oil fatty acid as raw materials by aminolysis, esterffication and hydroxymethylation.
Various substance has very small autoprotolysis constants which,however,has more large difference,so that the amphoteric solvents are found more wide application in titrimetric analysis.
The imago period is from the early April to end of May.The reproduction belongs to amphigenesis, but it may happen female parthenogenesis.A female average egg number is 3975.