Magnesium sulfate heptahydrate

In the wave of ecological agriculture development, Tianjin Rongda Fertilizer Co., Ltd.'s Magnesium sulfate heptahydrate fertilizer has become a new choice for farmers. Also known as "Epsom Salt," this naturally occurring mineral form offers the highest solubility among all magnesium sulfate products (approximately 71g/100ml water at 20°C), ensuring immediate nutrient availability upon application. Its core advantage lies in offering five precisely graded particle sizes from 0.1mm to 7mm, enabling customers to select the optimal form for foliar spray, drip irrigation, broadcasting, or compound fertilizer blending. Compliant with EU organic farming regulation EU 2018/848, it is safe for soil microorganisms, pollinators, and the ecological environment, making it the preferred choice for certified organic farms and environmentally conscious agricultural operations.

Magnesium sulfate heptahydrate Introduction

Product Name: Magnesium sulfate heptahydrate

Brand: RONGDA

Chemical Formula: MgSO₄·7H₂O

Molecular Weight: 246.47

CAS No.: 10034-99-8

Standard: GB/T 26568-2011

Advantages of Magnesium sulfate heptahydrate

1. Five Particle Sizes, Precisely Matched to Application Scenarios

Magnesium sulfate heptahydrate offers five particle size grades from 0.1mm to 7mm, covering all application needs including foliar spray, drip irrigation, broadcasting, and blending. Fine particle sizes (0.1-0.5mm, 0.1-1mm) dissolve rapidly for foliar fertilizer preparation and spray solutions; medium sizes (1-3mm) balance dissolution and flowability for drip irrigation and automated fertigation; coarse sizes (2-4mm, 4-7mm) provide better slow-release properties for direct broadcasting and compound fertilizer blending.

2. Highest Solubility, Rapid Deficiency Correction

Magnesium sulfate heptahydrate is the most soluble form (approximately 71g/100ml water at 20°C), dissolving instantly upon contact with water. Magnesium and sulfur nutrients are immediately available to crops as ions. When crops exhibit magnesium-deficiency symptoms such as interveinal chlorosis, foliar application of Magnesium sulfate heptahydrate can rapidly correct deficiencies within days — the optimal choice for emergency magnesium supplementation.

3. Natural Form, Safe and Environmentally Friendly

Magnesium sulfate heptahydrate, also known as "Epsom Salt," is a naturally occurring mineral form widely used in organic agriculture. It complies with EU organic farming regulation EU 2018/848, safe for soil microorganisms, pollinators, and the ecological environment, suitable for certified organic farms.

Applicable Scenarios:

• Foliar fertilizer manufacturers (fine particle sizes 0.1-1mm)

• Drip irrigation / fertigation systems (medium particle sizes 1-3mm)

• Field broadcasting, mechanical topdressing (coarse particle sizes 2-7mm)

• Certified organic farms

• Horticulture, flowers, and home gardening