Overview
Gypsum extract is derived from calcium sulfate dihydrate, a naturally occurring mineral. This versatile material has been used since ancient times for various applications, from construction to medicinal purposes. In modern industry, it serves as a multifunctional additive across diverse sectors. The extraction process typically involves mining natural gypsum deposits, followed by purification and milling to achieve the desired particle size. Some manufacturers also produce synthetic gypsum as a byproduct of industrial processes, particularly in flue gas desulfurization at power plants.
Physical and Chemical Properties
Gypsum extract maintains the fundamental properties of its parent mineral. It appears as a fine white powder with a density slightly higher than water. The material is chemically stable under normal conditions but undergoes dehydration when heated above 128°C. A key characteristic is its low solubility in water, which allows for controlled release of calcium and sulfate ions. This property makes it particularly valuable for agricultural applications. The pH-neutral nature (approximately 6.0-7.5) ensures compatibility with most soils and industrial formulations without causing significant pH shifts.
Main Applications
In agriculture, gypsum extract serves as an excellent soil conditioner, improving soil structure and providing essential calcium and sulfur nutrients. It helps remediate sodic soils and reduces aluminum toxicity in acidic soils. The construction industry utilizes gypsum extract as a setting time regulator in cement and as a component in drywall and plaster formulations. In food processing, it functions as a calcium source and coagulant, particularly in tofu production. Pharmaceutical applications include its use as an inactive filler in tablets and as a calcium supplement in certain medications.
Safety and Storage
Gypsum extract is classified as non-hazardous under normal handling conditions. However, prolonged exposure to dust may cause respiratory irritation, necessitating proper ventilation or dust masks during large-scale handling. Storage requirements are minimal but important for maintaining product quality. The material should be kept in moisture-resistant packaging in dry conditions. Bulk storage should avoid contamination with other materials, particularly those that might affect its purity for sensitive applications like food or pharmaceutical uses.
B2B Procurement Guide
When procuring gypsum extract commercially, buyers should first identify their purity requirements. Agricultural applications typically require 90-95% purity, while food and pharmaceutical uses demand 98-99% pure material with appropriate certifications. Consider the source material - whether natural or synthetic gypsum - as this may affect trace element content. Packaging options range from 25kg bags for smaller quantities to bulk tanker trucks for industrial-scale users. Lead times can vary seasonally, particularly for agricultural-grade products during peak farming seasons.
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