Prices for sodium sulfate, potassium sulfate, and magnesium sulfate vary a lot by grade (fertilizer vs industrial), packaging (25 kg bag vs bulk), purity, country/region, and shipping. If you tell me your country + intended grade + quantity + packaging, I can narrow it down.
Meanwhile, here are typical market price ranges (indicative, not quotes) by common use:
1) Sodium sulfate (Na₂SO₄)
- Industrial/low–mid purity (anhydrous/decahydrate): ~$150–$350 per metric ton
- Higher purity (USP/technical depending on specs): can be higher (sometimes $400–$1,000+/MT)
2) Potassium sulfate (K₂SO₄) (SOP — sulfate of potash)
- Fertilizer grade: ~$500–$1,000 per metric ton
- Premium/contract pricing can go outside this range depending on season and supply.
3) Magnesium sulfate (MgSO₄)
Common forms:
- Heptahydrate (“Epsom salt”, MgSO₄·7H₂O)
- Fertilizer/industrial: ~$200–$600 per metric ton
- Higher purity/pharma/food: can be higher
- Anhydrous (MgSO₄)
- Often higher than heptahydrate in many markets (roughly $300–$800/MT, depending on spec)
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Quick questions so I can give a more accurate price
1) What country/city are you buying in (or where are you importing to)?
2) What grade do you need? (fertilizer / industrial / food / pharma)
3) Desired form: anhydrous vs heptahydrate (for magnesium sulfate)
4) Approx quantity and pack size (e.g., 25 kg bags, 1 MT bulk, etc.)
5) Do you want USD/MT, per kg, or local currency?
Reply with those and I’ll estimate a tighter range or help you identify what price listings to compare.