Sulfuric Acid

Sulfuric acid is a highly corrosive strong mineral acid with the chemical formula H2SO4 and CAS number 7664-93-9. It has a molecular weight of 98.08 g/mol and is classified as a skin corrosive substance (Skin Corr. 1A). This colorless, oily liquid is one of the most important industrial chemicals, known for its strong dehydrating and oxidizing properties. It is extremely reactive with water and organic materials, making it both valuable in industrial processes and dangerous to handle without proper precautions.

Sulfuric acid is a dense, colorless to slightly yellow oily liquid at room temperature with no odor when pure. It has a high boiling point of 337°C and is completely miscible with water in all proportions, releasing considerable heat during mixing. The concentrated form (98%) has a density of approximately 1.84 g/cm³. It is highly hygroscopic, readily absorbing moisture from air, and exhibits strong acidic properties with excellent thermal stability under normal conditions.

Sulfuric acid serves numerous industrial applications, primarily in fertilizer production (phosphoric acid manufacturing), petroleum refining, metal processing, and chemical synthesis. It is extensively used in battery manufacturing, particularly for lead-acid batteries, textile processing, and paper production. Additionally, it functions as a dehydrating agent, catalyst in organic synthesis, pH adjustment in water treatment, and in the production of detergents, dyes, and pharmaceuticals. Its strong acidic properties make it indispensable across various industrial sectors.

Sulfuric acid requires extreme caution during handling due to its highly corrosive nature (Skin Corr. 1A classification). Essential PPE includes acid-resistant gloves, safety goggles, face shield, and chemical-resistant clothing. Work in well-ventilated areas or under fume hoods to avoid vapor inhalation. Always add acid to water, never water to acid, to prevent violent exothermic reactions. Use appropriate transfer equipment and ensure emergency shower and eyewash stations are readily accessible. Personnel should be trained in proper handling procedures.

Sulfuric acid must be stored in a cool, dry, well-ventilated area away from heat sources and direct sunlight. Use corrosion-resistant containers made of appropriate materials like certain plastics or stainless steel. Keep away from incompatible materials including metals, organic compounds, bases, and oxidizing agents. Storage areas should have secondary containment systems, proper ventilation, and emergency response equipment. Regular inspection of containers for corrosion or leaks is essential to prevent accidents and environmental contamination.

Sulfuric acid contact requires immediate emergency response due to its severe corrosive properties. For skin contact, immediately flush with copious amounts of water for at least 20 minutes while removing contaminated clothing. For eye contact, rinse continuously with water and seek immediate medical attention. If inhaled, move to fresh air immediately. Never induce vomiting if ingested; rinse mouth and seek emergency medical care. Remove contaminated clothing and wash thoroughly before reuse. Always consult poison control centers and medical professionals promptly.

Sulfuric acid disposal must comply with local, national, and EU waste regulations as it is classified as hazardous waste. Neutralization with appropriate bases (like lime or sodium hydroxide) under controlled conditions may be permitted for small quantities, but large volumes typically require professional hazardous waste disposal services. Never pour down drains or into sewers. Contact licensed waste management companies for proper collection, treatment, and disposal. Maintain detailed waste disposal records and ensure compliance with REACH and waste framework directive requirements.

Sulfuric acid is classified as ADR Class 8 (corrosive substances), Packaging Group II, requiring specialized transport procedures. It must be packaged in UN-approved containers with proper labeling including GHS05 pictogram and "Danger" signal word. Transport vehicles need appropriate placarding and emergency equipment. Drivers require ADR training and certification. Shipping documentation must include proper shipping names, hazard classifications, and emergency response information. Only authorized carriers with appropriate licenses should handle sulfuric acid transportation to ensure regulatory compliance.

Sulfuric acid is subject to comprehensive European regulations including REACH registration requirements, CLP classification as Skin Corr. 1A with mandatory GHS05 labeling. It is not currently listed as an SVHC (Substance of Very High Concern). Industrial users must comply with workplace safety directives, environmental discharge limits, and waste management regulations. Transportation falls under ADR Class 8 requirements. Companies handling sulfuric acid must maintain safety data sheets, conduct risk assessments, and implement appropriate control measures according to EU chemical legislation.

Sulfuric acid is available through OYSI, a trusted European distributor of technical chemicals, ensuring reliable supply and regulatory compliance. OYSI provides sulfuric acid in various concentrations and packaging options suitable for different industrial applications. As an established European chemical distributor, OYSI offers comprehensive technical support, proper documentation including safety data sheets, and adherence to REACH and CLP regulations. Contact OYSI directly for specific grade requirements, quantities, and delivery arrangements to meet your industrial sulfuric acid needs across Europe.