Natural Rock Salt (White)

Mined white halite — industrial, de-icing & food grades

White rock salt is the commodity end of the salt trade, and it is bought on three numbers and one logistics question. The numbers are sodium chloride content — 97–98% for de-icing and general industrial use, 99%+ for water softening, chlor-alkali feed and food grades — moisture, which matters more here than in pink salt because a damp cargo cakes in bulk and blocks a spreader, and particle size, nominated as a screened cut: crushed 5–15 mm for road spreading and licks, granular 1–5 mm for water softeners and industrial dissolving, and fine or milled below 1 mm for food processing and hide curing. Water-insoluble matter (clay and shale from the seam) is the quality complaint that actually arrives, so it is specified and tested rather than assumed. The logistics question is the one that decides the price: rock salt is a low-value, high-weight material, so the distance from mine to load port, and whether it moves in bulk or in bags, count for more than the assay.

Buy white rock salt rather than a pink grade when nobody sees the crystal: highway and municipal de-icing programmes, water-treatment and softener salt, chemical feedstock, hide and skin curing, animal feed formulation, and industrial food processing where a food-grade certificate is needed but colour is not. Türkiye's Çankırı mine and the white seams of the Pakistani salt range both supply this market by container and by bulk vessel, and the choice between them is usually a freight decision. CBIL supplies against independent verification of NaCl, moisture, insolubles and particle size at load port, with heavy-metal testing on food-grade lots, in bulk, 25 kg and 50 kg PP bags or 1 MT jumbo bags, on FOB, CFR and CIF terms.