Specification
Natural kieserite is a naturally occurring sulfate mineral chemically known as magnesium sulfate monohydrate (MgSO₄·H₂O), a highly soluble and concentrated source of magnesium (Mg) and sulfur (S) for plant nutrition, widely used in agriculture and industry. Below is a detailed breakdown:
| Item | Details |
| Chemical Formula | MgSO₄·H₂O (CAS No. 14168-73-1) |
| Crystal System | Monoclinic |
| Physical Traits | Colorless/grayish - white/yellowish, vitreous luster, Mohs hardness 3.5, density ~2.57 g/cm³, perfect cleavage on {110} |
| Solubility | ~417 g/L at 20°C, readily soluble in water, slightly soluble in alcohol, insoluble in acetone |
| Nutrient Content | Mg: ~16% (fine), ~15% (granular); S: ~22% (fine), ~20% (granular) |
Occurrence & Production
It mainly forms in ancient marine evaporite deposits, often associated with halite, carnallite, polyhalite, and anhydrite. Major deposits are found in Germany (Stassfurt), Russia, the western US, etc. It is mined from deep underground ancient ocean - derived sedimentary layers, then processed into fine powder or granules for different uses.
Key Applications
Agriculture: It is a premium Mg - S fertilizer, suitable for all soil pH levels. It can be used as a base fertilizer, top - dressing, or for blending with other fertilizers. It promotes crop yield and quality, and is permitted in organic farming. It has low risk of soil salinization and helps enhance nitrogen uptake.
Industry: It is used to produce Epsom salt (MgSO₄·7H₂O), and is applied in textile processing, papermaking, and building materials manufacturing.
Food & Pharma: Food - grade kieserite serves as a Mg supplement or a mineral adjuster for brewing water. In medicine, it can be used as a laxative and electrolyte supplement (under medical supervision).
Advantages
High nutrient concentration reduces transportation and application costs.
Fast dissolution and crop absorption, with minimal impact on soil pH and salt accumulation.
Packaging&Shipping
Package : 1）Bulk
2）25kg/pp bag
3）50kg/pp bag
4）jumbo bag
5）25kg/bag plus jumbo bag
remark：(with or without pallets)
