Hygroscopic (absorbs moisture from the air). NACRES NA.22 Concentrated sulfuric acid reacts violently with water and many other substances under certain conditions. Assess the Situation. The electrophilic addition reaction between ethene and sulfuric acid. It causes severe skin burns and eye damage. The concentrated sulphuric acid gives a hydrogen ion to the halide ion to produce a hydrogen halide. Sulfuric acid, dense, colorless, oily, corrosive liquid; one of the most important of all chemicals, prepared industrially by the reaction of water with sulfur trioxide. Because this is a gas, it immediately escapes from the system. The concentrated sulphuric acid can act both as an acid and as an oxidising agent. Concentrated Sulfuric Acid (H 2 SO 4) 93%-98% The use of concentrated sulfuric acid for pH control in water and wastewater treatment, agriculture, bio-energy and chemical processes is often the best choice due to the ready availability, low cost and effectiveness of this acid. It is also used as a drying agent by manufacturers. Concentrated sulphuric acid acting as an acid. Beilstein/REAXYS Number 2037554 . Target Organs: Lungs, teeth, eyes, skin. It reacts violently, becoming very hot, when mixed with water. Potential Health Effects Eye: Causes severe eye burns. Sulfuric acid can also be heated and used to dissolve other metals, including lead and copper.. Acid-proof synthetic gloves should be worn when working with sulfuric acid. Alkenes react with concentrated sulfuric acid in the cold to produce alkyl hydrogensulphates. May cause lung damage. EC Number 231-639-5. CORROSIVE: DANGER. May cause irreversible eye injury. \[ \ce{CH_2=CH_2 + H_2SO_4 \rightarrow CH_3CH_2OSO_2OH}\] Concentrated sulfuric(VI) acid . The next thing to do is to take a good look at the sulfuric acid spill, making note of how big of an area it covers and the approximate volume present. The 98.3% grade is more stable in storage, and is the usual form of what is described as "concentrated sulfuric acid". MDL number MFCD00064589. Corrosive to metal. For example, ethene reacts to give ethyl hydrogensulphate. Physical properties Grades of sulfuric acid. Concentrated sulfuric acid is a chemical used for multiple purposes by manufacturers and processors. Sulfuric acid fumes can be dangerous to breathe and you don’t want to spread them any farther than you have to within an enclosed space. Although nearly 100% sulfuric acid solutions can be made, the subsequent loss of SO 3 at the boiling point brings the concentration to 98.3% acid. Linear Formula H 2 SO 4. Sulfuric acid 99.999% CAS Number 7664-93-9. It is used to make fertilizer and a variety of other products. Molecular Weight 98.08 . For a 15-minute exposure, the vapour concentration in the atmosphere should not exceed 0.15 mg m-3. 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