Published · ANFA Chemical technical team
Hydrofluoric acid is one of the most hazardous chemicals in routine industrial use. It is corrosive, and fluoride ions penetrate skin and tissue, binding calcium and magnesium. This guide summarises the essentials for buyers, forwarders and plant teams. Always follow the current regulations and the supplier's SDS.
Dangerous goods classification
- UN number: UN 1790, proper shipping name "HYDROFLUORIC ACID".
- Class: 8 (corrosive) with subsidiary hazard 6.1 (toxic).
- Packing group: depends on concentration – solutions with more than 60% HF are Packing Group I; solutions with not more than 60% HF are Packing Group II.
- Sea freight: governed by the IMDG Code; road, rail and air have their own regulations (ADR/RID, IATA DGR). Check carrier acceptance in advance – many airlines do not accept HF.
Packaging
- HF attacks glass and many metals, so it is shipped in compatible plastics such as polyethylene. ANFA ships in PE drums (25 kg, 200 kg), 1000 L IBCs and ISO tank containers.
- Packaging must be UN-certified for the packing group and correctly marked and labelled (Class 8 and 6.1 labels, UN number, shipping name).
- For exports from China, dangerous goods packaging performance and usage certificates are required for sea shipments.
Documentation checklist
- Dangerous goods declaration and container packing certificate
- Safety Data Sheet (SDS) – SDS and COA from ANFA are provided upon inquiry confirmation
- Commercial invoice, packing list and any import permits required at destination (several countries license fluoride chemicals)
Storage
- Store in tightly closed polyethylene containers in a cool, dry, well-ventilated area with acid-resistant secondary containment.
- Keep away from glass, ceramics, metals, alkalis and strong oxidisers; never store with incompatible chemicals.
- Restrict access and post HF-specific hazard signage.
Personal protective equipment
- Chemical splash goggles and full face shield
- HF-resistant gloves (for example neoprene or butyl rubber), acid-resistant apron or suit and boots
- Local exhaust ventilation; respiratory protection where vapour exposure is possible
First aid – act immediately
- Skin: remove contaminated clothing, flush with plenty of water, then apply calcium gluconate gel and get medical help. Burns from dilute HF may be painless for hours, so treat every contact seriously.
- Eyes: flush with water for at least 15 minutes and seek urgent medical care.
- Inhalation: move to fresh air and get medical attention.
- Keep calcium gluconate gel and the SDS available wherever HF is handled, and make sure local medical services know HF may be involved.
Prefer a solid fluoride source for smaller operations? Compare HF with ammonium bifluoride in our comparison guide.