1. Purity: 98% 2. good quality , competitive price 3.provide best service 4.price advantage 5.prompt deliver Sodium metabisulphiteProperty :white or light yellow crystal powder,a strong smell of sulfur dioxide ,relative density is 1.4,easy to dissolve in water and glycerin.It has acidity ,and its solubility will become large while raising the temperature and is less to dissolve in ethanol. ...