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| Safety Data Sheet for Sulphuric Acid, 94 - 98% |
| 10. STABILITY AND REACTIVITY |
| Stability |
Sulphuric acid is stable during normal use and handling. If stored correctly it will not decompose over time. |
| Conditions to Avoid |
Strong alkalis, metals. See Handling and Storage (Section 7). |
| Reaction with other Materials: |
| - Water |
Much heat is evolved and a violent reaction occurs when a small amount of water is added to a large amount of acid. Always add acid to water. |
| - Air |
No dangerous reaction. |
| - Acids |
Dangerous reactions with nitric acid, hydrochloric acid, formic acid and
dilute acids in general with the possible evolution of toxic gas. |
| - Bases/Alkalis |
Violent reaction. |
| - Oxidising Agents |
Violent reaction with chlorine oxyacid salts, hydrogen peroxide and
permanganates. Toxic fumes may be omitted.
No dangerous reaction with halogen |
| - Other Chemicals |
Dangerous reactions possible with aldehydes, ketones, halocarbons,
nitrocompounds, cyanides, phosphorus (111) oxide. |
- Hazardous
Decomposition
Products |
Sulphuric acid has the potential to decompose to give sulphur trioxide
gas. Sulphuric acid reacts with many metals, giving off highly flammable hydrogen gas. |
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| 11. TOXICOLOGICAL INFORMATION |
| Effects of Substance: |
| - On Eyes |
Liquid: severe burns and tissue destruction.
Mist or fume: irritation. |
| - On Skin |
Liquid: severe burns and tissue destruction.
Mist or fume: irritation, may cause burns at high concentrations. |
| - By Skin Absorption |
No known systemic effects. |
| - By Ingestion |
Severe corrosion of the mouth, throat and digestive tract. |
| - When Inhaled (acute effect) |
Exposure to the mist or fume at concentrations much above the OEL causes
moderate to severe irritation of the nose, throat and upper respiratory tract. High
concentrations may cause immediate respiratory difficulty and serious damage to lung
tissue. |
| - When Inhaled (chronic effect) |
Prolonged or repeated exposure to mists may cause dental erosion, chronic inflammation of the upper respiratory tract, bronchitis or lung damage. |
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| 12. ECOLOGICAL INFORMATION |
| Toxic to fish and algae. Concentrations greater than 1-2mg/l as may be
lethal to fish. Lowering pH below about 5 could induce fatalities in aquatic life. |
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| 13. DISPOSAL CONSIDERATIONS |
| Spillages |
Small acid residues may be diluted with large amounts of water,
neutralising with caustics to pH about 7, and flushed to the sewer.
Large amounts must be transported to an approved reception of treatment installation for
problematic waste with information of quantities, characteristics and hazards. Equipment
may be washed with water and household detergents. |
| Waste |
Dispose of sulphuric acid or materials contaminated with sulphuric acid
using a licensed contractor. |
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