Calcium peroxide (CAS No.: 1305-79-9), with the molecular formula CaO2, is a white or slightly yellow powder, odorless and tasteless, slightly soluble in water, and soluble in acid. It also has strong bleaching, bactericidal, and disinfecting properties, and is harmless to the environment. Calcium peroxide has long been used in shrimp farming, especially in winter shrimp farming, where it provides gentle oxygenation, leaves no harmful residues, and has significant water conditioning and antibacterial effects.Calcium peroxide reacts with water to produce oxygen, making it a long-lasting oxygenating agent with water purification and preservation properties. It is also widely used as an oxygenating agent in soil improvement, river sludge treatment, rice seeds, and edible fungi inoculants. Calcium peroxide is very stable at room temperature and does not easily decompose, but it begins to decompose at 275 degrees Celsius. It can slowly release O2 over a long period in humid air or water.

I. Basic Information

English Name: Calcium peroxide

CAS No.: 1305-79-9

Molecular Formula: CaO2

Molecular Weight: 72.08

EINECS No.: 215-139-4

Appearance: White or slightly yellow powder

Composition: CaO2, CaO, Ca(OH)2

CaO2% ≥50-75.0

Particle Size Distribution, %: Through 200 mesh≥99%; Through 325 mesh≥50%

Bulk Density, g/L: 500~650

Fe, %≤0.002

pH: 12

II. Uses

1. In aquaculture, calcium peroxide can be used as an oxygen-releasing agent to increase dissolved oxygen in water, adjust the pH value of water, improve water quality, and eliminate pathogens. Currently, calcium peroxide is mainly used in aquaculture in 30% disintegrating granular form and 50% powder form.

2. Calcium peroxide is also used in the daily chemical industry as a dental cleaner and household disinfectant/deodorizer.

3. In environmental protection, calcium peroxide can be used to improve surface water quality, treat wastewater containing heavy metal particles, and control red tides.

4. In food processing, calcium peroxide can be used for food and fruit/vegetable preservation, feed additives, dough improvers, and food sterilization.

5. In the metallurgical industry, it can be used for dephosphorization and precious metal extraction; in the rubber and chemical industries, it serves as a vulcanizing agent for natural rubber, a hardening/sealing agent for polysulfide rubber, and an initiator for unsaturated polyester resins.

6. Calcium peroxide can also be used in emergency oxygen supply, cigarette manufacturing, and the paint industry.

7. In agriculture, calcium peroxide is used for plant root oxygenation, biochemical soil improvement, rice seed coating, and as an oxygen fertilizer and bio-compound fertilizer.

III. Storage

Keep containers sealed and ensure labels are intact and complete. Handle with care during transport to prevent damage to packaging and containers, and ensure proper pressure release. Store in a dry, clean, and well-ventilated warehouse. Keep away from fire, heat sources, and direct sunlight. Protect from moisture and rain. Do not transport in rainy weather. Store separately from flammable or combustible materials, reducing agents, sulfur, phosphorus, etc., and avoid mixed storage and transportation. Avoid contact with other substances that may cause product decomposition.

IV. Precautions for Use

Avoid contact with eyes, skin, and clothing. Ensure good ventilation in the surrounding environment during use. Do not ingest, and do not inhale dust, mist, or fumes. Do not eat, drink, or smoke in the work environment. Avoid contact with flammable materials and organic matter. Containers should be labeled; keep containers sealed when not in use. Wash hands and other body parts that have come into contact with the product after handling.

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