Sulfuric Acid 98%
| Formula: | H2O4S |
| Chemical formula: | H2SO4 |
| Density: | 1.84 g/cm3 (20 °C) |
| Molar mass: | 98.08 g/mol |
| CAS number: | 7664-93-9 |
| EC index number: | 016-020-00-8 |
| HS code: | 28070010 |
| EC number: | 231-639-5 |
| Storage (temperature): | Without limitations. |
| SDS | available |
| RTECS: | WS5600000 |
| R phrase: | R 35 |
| S phrase: | S 26-30-45 |
| Odour: | odourless |
| Form: | liquid |
| Color: | colourless |
| PH value: | 0.3 (49 g/l 25 °C) |
| Solubility in water: | (20˚C) soluble, |
| Solubility in ethanol: | soluble, |
| Boiling point: | ~ 335 °C |
| Melting point: | ~ 3 °C |
| Vapour pressure: | ~ 0.0001 hpa (20°C) |
| Thermal decomposition: | ~ 338°C |
| Assay | > | 98 | % |
| Description | Conforms | ||
| Solubility | Conforms | ||
| Identification | ~ | Conforms | |
| Specific gravity | ≤ | 1.84 | g/cm3 |
| Chloride | ≤ | 0.005 | % |
| Heavy metals | ≤ | 5 | ppm |
| Residue on ignition | 0.005 | % | |
| Limit of nitrate | Conforms | ||
| Reducing Substances | Conforms |
Sulfuric acid 98% is a dense, colorless to slightly yellow, highly corrosive strong mineral acid commonly used in industrial and laboratory settings.
🏭⚗️ Production
It is produced mainly via the Contact process, involving catalytic oxidation of sulfur dioxide to sulfur trioxide, followed by absorption into water to form concentrated sulfuric acid.
🔬 Properties
The chemical formula is H₂SO₄ with a molar mass of approximately 98.08 g/mol. It is a viscous liquid with a high boiling point (~337 °C), highly soluble in water with a strong exothermic reaction, and acts as a powerful dehydrating and oxidizing agent.
🧪 Applications
Widely used in fertilizer manufacturing, petroleum refining, chemical synthesis, metal processing, battery acid, and wastewater treatment. Also utilized as a reagent for pH control and digestion in laboratories.
⚠️ Safety
Extremely corrosive and toxic; causes severe burns to skin and eyes and respiratory irritation if inhaled. Requires full protective gear including acid-resistant gloves, goggles, and face shield during handling. Should be stored in corrosion-resistant containers away from moisture and incompatible substances.
