... is strong excitant, easy cause cough by inhalation.It soluble in water slightly ,soluble in ethanol , ethyl ether and other organic solvents easily. ... stronger than fatty acid. Their chemical properties are similar, both can form salt, esters, acyl halide, acid amides, acylation etc., ... other food etc.For industry application, it can be used as mordant in printing and dyeing industry,it's also used ...