Sodium sulphate (also spelled sodium sulfate) is one of those “quiet” workhorse chemicals. It doesn’t shout for attention on product labels, yet it shows up across homes, hospitals, mills, and even in thermal packs. If you work in chemicals, detergents, textiles, or glass, you’ve already bumped into it. If you’re a curious buyer or engineer, this guide unpacks how this salt actually works day-to-day—and...