Strong mineral acids are routine industrial chemicals, but a handful of handling basics prevent almost all of the incidents that happen with them.
Always Add Acid to Water, Never Water to Acid
When diluting a concentrated acid, add it slowly to water — not the reverse. Adding water to concentrated acid can cause a sudden, localized boil-over of hot, splattering acid, because the heat of dilution releases faster than it can dissipate. This single rule prevents a large share of acid-dilution injuries.
PPE and Ventilation
Chemical-resistant gloves, splash goggles or a full face shield, and an acid-resistant apron are the baseline for handling any of these concentrates. Nitric acid and hydrochloric acid both release fumes that need adequate ventilation or fume-extraction — never handle concentrated product in a closed, unventilated space.
Material Compatibility
Hydrochloric acid is particularly aggressive toward most metals and will attack unlined mild steel quickly — storage and dosing equipment need PVC, HDPE or appropriately lined construction. Nitric acid is a strong oxidizer as well as an acid, so it must be kept away from organic material, reducing agents and combustibles, not just from bases.
Emergency Preparedness
An eyewash station and safety shower should be reachable within seconds of any area where these acids are handled — not stored in a cabinet down the hall. Keep the Safety Data Sheet physically accessible near the storage/handling area, and make sure everyone handling the product knows the first-aid steps before they need them, not after.