Used as acidifier in beverages and food (e.g., wine, candies); in pharmaceuticals as excipient and chelator; in metal cleaning and polishing; in cosmetics for pH adjustment; and in dyeing as mordant.

Causes serious eye damage and skin irritation; avoid breathing dust or contact. Muscle toxin in high doses leading to paralysis; incompatible with bases or metals. Hazard Class 8; use protective gloves and eye protection.

In 25kg bags or drums; store in tightly closed containers in cool, dry places.