Import 99.5% Heptapydrate Magnesium Sulphate — Buy in wholesale FOB from Supplier in China

Pingxiang Vitalforce Firm supplies 99.5% heptahydrate magnesium sulphate (MgSO₄·7H₂O) as colourless, odourless crystals with neutral pH and clear solution clarity. The product carries a chloride content of 0.01%, heavy metals at 0.001%, iron salt at 0.0015%, and arsenic salt at 0.0002%. These figures indicate pharmaceutical-grade purity thresholds that exceed general agricultural-grade requirements. The formula MgSO₄·7H₂O contains magnesium, sulphur, and oxygen in a crystalline structure that holds seven molecules of water per formula unit.

In dry air, heptahydrate magnesium sulphate weathers to powder form through efflorescence; gradual heating drives it toward anhydrous magnesium sulphate. It dissolves readily in water, shows slight solubility in alcohol and diethyl ether, and remains insoluble in acetone. The material exhibits a melting point of 1124°C and a relative density of 2.66 against water. Standard industrial grades typically range from 99.0% to 99.9% purity, with agricultural applications often accepting slightly lower thresholds than technical or pharmaceutical uses. The kieserite mineral source used in production is a naturally occurring magnesium sulphate mineral that requires acidulation with sulphuric acid to achieve soluble crystalline forms.

Agricultural buyers form the primary market, using this compound as a magnesium fertilizer that corrects soil deficiencies without altering pH balance. Compound fertilizer manufacturers incorporate it to boost magnesium content and crop yield in magnesium-deficient regions. Forestry operations and specialty crop producers also represent significant demand segments. Importers should confirm with Pingxiang Vitalforce Firm regarding specific packaging configurations, MOQ, and whether the material is offered as technical grade, agricultural grade, or meets先 pharmaceutical grade, as the 99.5% purity figure could align with multiple application standards.

Pingxiang Vitalforce Firm operates from Pingxiang, Jiangxi Province, China, postal code 337000. The supplier holds a Harbor trust tier classification on the platform. The response rate is recorded at 0.00% with an average response time of 0 hours, which indicates no historical response data is available through the platform interface. The company profile does not disclose year of establishment, registered capital, employee headcount, or factory floor area. No third-party certifications, audit reports, or verification documents are listed in the available profile data. The supplier's primary listed product is heptahydrate magnesium sulphate at 99.5% purity, with agricultural fertilizer applications emphasized in the product description.

The listing provides a WhatsApp contact number (8614707090699) for direct enquiry. There is no stated information about production capacity, annual turnover, export markets served, or existing client base. The supplier does not indicate whether they operate as a manufacturer, trading company, or hybrid entity. Buyers should conduct independent due diligence including business licence verification, factory audit, and sample testing before committing to orders. The Jiangxi location places the supplier within China's inland chemical production belt, though specific port arrangements for export shipment would need confirmation.