The basic magnesium chloride whiskers with good whisker quality and smooth surface were synthesized by liquid precipitation reaction method using Xuwen salt field brine as raw materials and sodium hydroxide as the precipitant. The phase

purity

structure of crystal morphology

crystal growth orientationof whiskers samples were characterized by elementary analysis

X-ray diffraction (XRD)

scanning electron microscopy (SEM) and high resolution transmission electron microscopy (HRTEM). The SEM analysis revealed that the basic magnesium chloride whiskers showed fine dispersive capability

and the distribution of particle sizes was uniformity. The basic magnesium chloride whiskers with a welldefined shape as well as well straight whisker could be obtained under the following conditions: reaction temperature of 35 ℃

and reaction time of 50 h. The preparation method is simple

and the production cost is low in this work. It is thus expected to use Xuwen salt field brine to a large-scale experiment.