ngs White De-Icing Salt Small 25kg Bags. NGS import and supply high purity white salt typically 98.5 - 99.4% NaCl, specifically grades to BS 3247 where requested, which ideal for paths, roads, car parks and highways. This is a sustainable product. NGS's white, finest quality de-icing salt is of the highest purity enabling you to use you salt more efficiently. The purity provides a quicker de-icing effect. NGS's de-icing salt is clean, anti-caked and leaves no residue on the ground, ideal for all access areas. A clean, sustainable, alternative to Rock Salt.