Our white de-icing salt is marine salt harvested from sustainable sources around the Mediterranean Sea and is almost 100% pure sodium chloride. The Benefits of de-icing with White Salt: White salt does not leave behind the same messy residue as traditional brown salt (grit) making it perfect for pathways, pavements, playgrounds and commercial estates where cleanliness is important. With a purity level of almost 100% sodium chloride, every particle plays a part in the de-icing process. It is graded particle sizes for even distribution. Free flowing, ideal for use in spreaders. Conforms to BS3247:2011, the British Standard for de-icing salt.