Hydrogen Fluoride and Hydrofluoric Acid

Physical Properties Colorless, clear, fuming liquid Anhydrous HF bp 20 °C, mp -83 °C Miscible with water  

Anhydrous HF 775 mmHg at 20 °C Hydrofluoric acid 14 mmHg at 20 °C Noncombustible 

Extremely corrosive bquid and vapor that can cause severe injury via skin and eye contact, inhalation, or ingestion. 

HF reacts with glass, ceramics, and some metals. Reactions with metals may generate potentially explosive hydrogen gas. 

Laboratory personnel should be familiar with first aid procedures before beginning work with HF calcium gluconate gel should be readUy accessible in areas where HF exposure potential exists. 

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Anhydrous hydrogen fluoride and hydrofluoric acid react with substances containing silica and silicon oxide to form silicon tetrafluoridc and fluorosilic acid. SiF, a colorless gas at ambient temperature, is liighly toxic. An equilibrium mixture of SiF in the presence of moisture also contains hydrogen fluoride and hydrofluoric acid. 

Both hydrogen fluoride and hydrofluoric acid, referred to collectively as HF, are extreme irritants to any tissue they contact. Exposed areas heal poorly, gangrene may develop, and ulcers can occur in affected areas of the upper respiratory tract. 

Section II Hydrogen Fluoride and Hydrofluoric Acid Methylene Chloride Section III Calcium... 

Hydrogen fluoride and hydrofluoric acid are very corrosive and additionally very toxic. This synergism is responsible for their extreme danger in consequence of their very corrosive property the skin is damaged immediately and the compound very quickly reaches the target organ and can develop very toxic effects. Therefore,... 

Hydrogen Fluoride and Hydrofluoric Acid Hydrogen Peroxide Hydrogen Sulfide Iodine... 

Aliphaic amines, alkaline earth chlorides, alkaline earth hydroxides, fluorine, hydrogene fluoride and hydrofluoric acid, hydrochloric acid and hydrogen chloride (1989),... 

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