Calcium peroxide

Calcium peroxide is an inorganic chemical compound with the molecular formula CaO2 and CAS number 1305-79-9. It belongs to the family of alkaline earth metal peroxides and has a molecular weight of 72.08 g/mol. This white to yellowish crystalline solid serves as a stable source of oxygen release when it comes into contact with water or acids, making it valuable in various industrial applications requiring controlled oxygen generation.

Calcium peroxide appears as a white to pale yellow crystalline powder that is odorless under normal conditions. It is slightly soluble in water, where it decomposes to release oxygen and form calcium hydroxide. The compound is stable under dry conditions but readily decomposes in the presence of moisture, acids, or heat. It has a density of approximately 2.9 g/cm³ and decomposes at temperatures above 275°C.

Calcium peroxide serves multiple industrial and commercial purposes as an oxidizing agent and oxygen source. It is commonly used in environmental remediation for soil and groundwater treatment, in agriculture as a soil conditioner and seed treatment, and in aquaculture to maintain oxygen levels. Additional applications include its use in dental care products, food processing as a dough conditioner, and in various chemical processes requiring controlled oxygen release.

Calcium peroxide should be handled with appropriate personal protective equipment including safety goggles, dust masks, and protective gloves to prevent skin and eye contact. Work in well-ventilated areas to avoid dust inhalation and prevent accumulation of released oxygen. Avoid contact with combustible materials, acids, and moisture during handling. Use non-sparking tools and equipment, and ensure proper grounding to prevent static electricity buildup during transfer operations.

Calcium peroxide must be stored in a cool, dry, well-ventilated area away from heat sources, direct sunlight, and moisture. Keep containers tightly sealed in original packaging and separate from incompatible materials such as combustible substances, acids, and reducing agents. Storage areas should be equipped with appropriate fire suppression systems and maintained at stable temperatures below 25°C to prevent decomposition and ensure product stability.

Calcium peroxide contact requires immediate action depending on exposure type. For skin contact, remove contaminated clothing and rinse affected areas with plenty of water for at least 15 minutes. In case of eye contact, flush immediately with water for 15-20 minutes and seek medical attention. If inhaled, move the person to fresh air and provide oxygen if breathing is difficult. For ingestion, rinse mouth and seek immediate medical attention without inducing vomiting.

Calcium peroxide disposal must comply with local, national, and European waste regulations as it is classified as hazardous waste. Small quantities can be neutralized by gradual addition to large amounts of water under controlled conditions, allowing complete decomposition. Larger quantities should be disposed of through licensed hazardous waste contractors. Never dispose of in regular waste streams, sewers, or waterways without proper treatment and regulatory approval.

Calcium peroxide is classified under ADR as Class 5.1 (Oxidizing substances) Packing Group II, requiring specific transport regulations compliance. It must be packed in approved UN specification packaging with proper labeling and documentation. Transport vehicles need appropriate placarding and drivers require ADR certification. The substance should be kept dry during transport and separated from incompatible materials according to segregation tables.

Calcium peroxide is regulated under European REACH regulation and must comply with CLP classification requirements for oxidizing substances. While not classified as an SVHC (Substance of Very High Concern), it falls under ADR transport regulations as Class 5.1. Suppliers must provide safety data sheets and ensure proper classification. Users must follow occupational exposure limits and workplace safety requirements established by national authorities.

Calcium peroxide is available through OYSI, a specialized European distributor of technical chemicals serving industrial customers across the continent. OYSI provides calcium peroxide in various packaging sizes with full regulatory compliance including safety data sheets and transport documentation. As a professional chemical distributor, OYSI ensures product quality, proper handling, and reliable supply chain management for industrial applications throughout Europe.