Hydrofluoric acid 70%

Yes, these are two names for the aqueous solution of hydrogen fluoride, HF. In the product listing, the 70% concentration means a high content of the main substance, so when purchasing it is important to check the specification, the mass fraction of HF, the residue after ignition, the content of silicon fluoride, sulfates, iron, chlorides, heavy metals and phosphates. For an enterprise, these indicators matter for incoming batch inspection and selecting raw material for an approved specification.

70% hydrofluoric acid reacts actively with glass and many metals, so suitable plastic containers or specialised vessels compatible with HF are used for storage. A mistake in choosing packaging can lead to container damage, leakage and an emergency situation in the warehouse. Upon receipt of a batch, it is important to check the canister material, tightness, labelling, absence of leaks and compliance of the packaging with the safety data sheet requirements. Glass containers are not suitable for this product.

70% hydrofluoric acid is stored in tightly closed, compatible containers, in an unheated, well-ventilated warehouse, separately from alkalis, glass, metals and incompatible materials. The storage area must be restricted to unauthorised persons, equipped with spill containment means and clear hazardous substance labelling. Canisters must not be left open, overheated, or placed where mechanical damage is possible.

70% hydrofluoric acid is classified as an especially hazardous substance, so any operations with it are carried out only by trained employees according to an approved instruction. Personnel use acid-resistant gloves, safety goggles or a face shield, protective clothing, respiratory protection and effective ventilation. Vapours or solution must not be allowed to contact the skin, eyes or respiratory tract. In case of a spill or contact, the enterprise’s emergency regulations and safety data sheet are followed, without unauthorised mixing with other reagents.