Used in dyes synthesis, cleaning agents for descaling, herbicides, and as a flame retardant; also in electroplating and paper processing.

Irritates skin, eyes, and mucous membranes; low toxicity but harmful to aquatic life. Combustible; avoid strong bases; Hazard Class 8.

In 25kg bags or drums with liners; store in corrosive-resistant containers; rinse triply for recycling or puncture for disposal.