Potassium fluoride,anhydrous
           Potassium fluoride,extra pure
           Potassium fluoride,Granular
           Silicon Dioxide
           Hydrofluoric acid
           Synthetic Cryolite
           Potassium Fluoaluminate
           Ammonium bifluoride
           Potassium Bifluoride
           Aluminium fluoride
           Sodium fluoride
           Potassium Fluorosilicate
           Fluorosilicic Acid
           Sodium silicofluoride
           Potassium Hydroxide Flakes
           Magnesium Fluoride
           Magnesium fluorosilicate
           Barium Fluoride
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[World Wide Web Roundup] According to Yonhap November 16, 2015 reported that at 0:47 on the 16th, South Korea Ulsan Nam synthetic detergent manufacturing enterprises pear water chemistry station toxic hydrofluoric acid spill occurs. Ulsan City Fire Headquarters said dispatched immediately after the alarm. So far, no casualties.

Fire department personnel, said hydrofluoric acid can damage human skin and eyes, inhaled, if the concentration of harmful substances under achieve 0.5ppm case, more than eight hours, it will cause harm to humans. At that time, pear water chemistry station has more than 10 staff members, but the body is not unusual, and have not received reports of casualties nearby.

Currently, after a preliminary investigation presumably due to the aging of the valve cracking led to hydrofluoric acid leak, the case remains to be further investigated.

It is understood that, in February 2014, Ulsan Pear water chemistry station director and legal due to a mixture of hydrofluoric acid leak was fined.