Fuming
| Also Known As | Fuming acid, oleum (fuming H₂SO₄), fuming nitric acid, smoking liquid |
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What is Fuming?
The emission of visible dense fumes or vapors from a liquid surface at room temperature. Fuming substances include concentrated hydrochloric acid (fuming HCl) and fuming sulfuric acid (oleum). The term indicates high vapor pressure and typically high reactivity or corrosivity.
Properties & Characteristics
Uses & Applications
Safety Information
Always consult the SDS/MSDS before handling any chemical. This information is for educational purposes only.
Key Facts
Frequently Asked Questions
The emission of visible dense fumes or vapors from a liquid surface at room temperature. Fuming substances include concentrated hydrochloric acid (fuming HCl) and fuming sulfuric acid (oleum). The term indicates high vapor pressure and typically high reactivity or corrosivity.
Fuming sulfuric acid (oleum) is used in industrial sulfonation reactions and in the manufacture of explosives (nitration of aromatic compounds). Fuming nitric acid is used as a rocket oxidiser and in nitration of organic compounds for pharmaceutical and explosives synthesis.
Fuming acids are extremely corrosive and release toxic acidic vapours that cause severe respiratory, skin, and eye damage at very low concentrations. Always use in a fume hood with face shield, chemical-resistant gloves, and respiratory protection if the fume hood is inadequate. Fuming liquids requi…