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Product name | Magnesium sulfate monohydrate | Magnesium sulfate | Magnesium sulfate heptahydrate |
Molecular formula | MgSO4.H20 | MgSO4 | MgSo4.7H20 |
Molecular weight | 138 | 120 | 246 |
Particle size (fineness) | 30-50 mesh (coarse particles);60-100 mesh (fine powder) | 60-100 mesh (fine powder) | Small crystals within 0.3mm |
Magnesium ion content (%) | 15.5/16%; 16.5/17% | ≥ 19.8%; ≥ 19.6% | ≥ 9.8% |
Moisture content | 9%-6%; 5%-3% | ≤ 1%; 2% | / |
Magnesium oxide content | 25.8/26.7; 27.5/28.4 | ≥ 33%; ≥ 32.7% | ≥ 16% |
Sulfur content | 20.6/21.3; 21.9/22.6 | ≥ 26 | / |
Main ingredients | Magnesium sulfate water + free water | Magnesium sulfate | MgSo4.7H20 ≥99% |
Solution PH value | 5-8 | 5-8 | 5-8 |
Iron content (Fe) | ≤0.0015% | ≤ 0.001% | ≤ 0.001% |
Chloride (as CL) | ≤0.005% | ≤ 0.001% | ≤ 0.007% |
Heavy metal (Pb) | ≤0.0002% | ≤ 0.0002% | ≤ 0.0002% |
Arsenic (AS) | ≤0.001% | ≤ 0.0001% | ≤ 0.0001% |
Mercury (Hg) | ≤0.0001% | ≤ 0.0001% | ≤ 0.0001% |
Water insoluble | ≤0.01% | ≤ 0.01% | ≤ 0.01% |
Appearance | White small particles or powder | White powder | White or colorless small crystals |
Clarity | 25 35 minutes completely dissolved, completely clear. | 25 , fully dissolved in 8-10 minutes, completely clarified | 25 , fully dissolved in 35 minutes, completely clarified. |
Application | 1. Animal food 2. fertilizers 3. Feed 4. Compound fertilizer material | 1. High-end compound fertilizer; 2. Anti-caking agent; 3. printing and dyeing, electroplating industries. | 1. Compound fertilizer material 2. Feed 3. Sewage treatment 4. Aquaculture 5. Fireproof/insulation building materials, cement coagulant aids 6. Raw materials for light industries such as paper making, printing and dyeing, coatings, leather, etc. |
Packaging | 50kg: outer bag lamination+inner bag size: 55 * 90mm 25kg: outer bag lamination+inner bag size: 50 * 80mm | 25kg: outer bag lamination+inner bag size: 50 * 80mm | 50kg: outer bag lamination+inner bag size: 55 * 90mm |
Q: Are you a manufacturer or a trading company?
A: We are a trading company, and we have a manufacturer located in Hebei Province.
Can I get some samples before I place an order?
A: Yes, we can provide free samples, but you will pay the freight.
Q: How long will it take to get a sample?
Answer: 7-10 days for general products, 30-40 days for customized products. Depends on production arrangements.
Q: What documents do you provide?
A: Usually we provide commercial invoice, packing list, bill of lading, COA, health certificate. If your market has any special requirements, please let us know.
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