Sodium Hydroxide

Sodium Hydroxide is a highly corrosive inorganic compound with the chemical formula NaOH and CAS number 1310-73-2. This strong alkaline substance has a molecular weight of 39.997 g/mol and appears as white pellets, flakes, or powder. It is classified as Skin Corr. 1A under GHS regulations, indicating its severe corrosive properties to skin and eyes. Sodium hydroxide is one of the most important industrial chemicals, widely used in manufacturing processes across various industries.

Sodium Hydroxide is a white, odorless solid at room temperature that readily absorbs moisture and carbon dioxide from air. It is highly soluble in water, generating significant heat during dissolution. The substance has a melting point of 318°C and is extremely hygroscopic, meaning it attracts water vapor from the atmosphere. When dissolved, it forms a highly alkaline solution with a pH greater than 13, making it one of the strongest bases commonly used in industry.

Sodium Hydroxide serves multiple industrial applications including pulp and paper manufacturing, soap and detergent production, and chemical synthesis. It is extensively used in water treatment for pH adjustment, in food processing for cleaning and sanitization, and in petroleum refining. The chemical industry utilizes it for producing various chemicals, while the textile industry employs it for fiber processing. It also plays a crucial role in aluminum production and metal cleaning applications.

Sodium Hydroxide requires careful handling due to its highly corrosive nature classified as Skin Corr. 1A. Essential personal protective equipment includes chemical-resistant gloves, safety goggles, face shields, and protective clothing. Work in well-ventilated areas to avoid inhalation of dust or vapors. Never add water directly to solid sodium hydroxide as it generates intense heat. Always add the solid slowly to water while stirring. Keep emergency eyewash stations and safety showers readily accessible during handling operations.

Sodium Hydroxide must be stored in a cool, dry place away from moisture, acids, and incompatible materials. Use tightly sealed, corrosion-resistant containers made of materials like polyethylene or stainless steel. Avoid storage in aluminum, zinc, or tin containers as they react with the substance. Keep away from organic materials, oxidizers, and acids to prevent dangerous reactions. Storage areas should be well-ventilated and equipped with appropriate spill containment measures and emergency response equipment.

Sodium Hydroxide contact requires immediate emergency response due to its corrosive classification. For skin contact, immediately remove contaminated clothing and flush affected area with large amounts of water for at least 20 minutes. For eye contact, rinse continuously with water for at least 15 minutes while holding eyelids open. If inhaled, move to fresh air immediately. Never induce vomiting if ingested - rinse mouth and drink water. Seek immediate medical attention for all exposure incidents as burns may not be immediately apparent.

Sodium Hydroxide disposal must comply with local and national hazardous waste regulations. Small quantities can be carefully neutralized with dilute acid under controlled conditions by qualified personnel, then disposed of according to local wastewater regulations. Larger quantities require disposal through licensed hazardous waste contractors. Never dispose of in regular trash or pour down drains without proper neutralization and authorization. Contaminated packaging must also be treated as hazardous waste and disposed of accordingly through appropriate channels.

Sodium Hydroxide is classified as ADR Class 8 (corrosive substances) Packing Group II for transportation. It requires appropriate UN specification packaging marked with proper shipping names and hazard labels including the GHS05 corrosion pictogram. Transport vehicles must carry appropriate emergency equipment and documentation. Drivers require ADR training for dangerous goods transport. Packages must be properly secured to prevent damage during transit, and emergency response information must be readily available throughout the transportation process.

Sodium Hydroxide is subject to comprehensive chemical regulations including REACH registration requirements in Europe and CLP classification as a corrosive substance with the danger signal word. It falls under various occupational safety regulations requiring proper workplace controls and employee training. The substance is not currently listed as an SVHC (Substance of Very High Concern) but must comply with standard industrial chemical handling regulations, environmental discharge limits, and transportation safety requirements across different jurisdictions.

Sodium Hydroxide is readily available through OYSI, a leading European distributor of industrial chemicals. OYSI provides reliable supply of quality sodium hydroxide with proper documentation, safety data sheets, and regulatory compliance support across European markets. As an established chemical distributor, OYSI ensures product traceability, appropriate packaging, and technical support for industrial customers. Contact OYSI directly for specific grades, quantities, packaging options, and delivery arrangements to meet your industrial sodium hydroxide requirements.