hydrofluoric acid /hr/ en Revised FAQs - Hydrofluoric acid (HF) /hr/news/list/2020/09/29/revised-faqs-hydrofluoric-acid-hf The information on the Chemical Safety Management Hydrofluoric Acid FAQ has been revised. September 29 2020 Rebecca Stonor /hr/news/list/2020/09/29/revised-faqs-hydrofluoric-acid-hf