Cheapest by weight
$7.37 per kilogram
Price per unit, converted to US dollars
At Lab Alley, United States
- Pack
- 25 kilograms for $184.33
- Grade
- Laboratory grade · packs of 25 kilograms and up
Magnesium Sulfate suppliers and prices
- Formula
- MgO4S
- CAS number
- 7487-88-9
- Molar mass
- 120.37 g/mol
Smallest amount to spend
1.50 GBP for 100 grams
Total for one pack, in the store's own currency
At Get Er Brewed, United Kingdom
- Works out at
- $19.98 per kilogram
- Grade
- Grade not stated · packs of 50 grams to 1 kilogram
23 offers from 4 stores · Prices checked October 28, 2026 · Prices run from $7.37 to $373 per kilogram, because a bigger pack costs less per kilogram.
Show prices per
Liquids switch to the matching volume: microlitre, millilitre, litre, fluid ounce or US gallon.
Every price we found
27 prices, cheapest first
| Store | Grade and pack | Price | Link |
|---|---|---|---|
| Lab AlleyUnited States | Laboratory grade · packs of 25 kilograms and up25 kilograms for $184.33 | $7.37 per kilogram | View at store |
| Lab AlleyUnited States | Laboratory grade · packs of 1 to 25 kilograms22.7 kilograms for $174.28 | $7.68 per kilogram | View at store |
| Lab AlleyUnited States | USP grade · packs of 1 to 25 kilograms22.7 kilograms for $179.14 | $7.90 per kilogram | View at store |
| Lab AlleyUnited States | Grade not stated · Solution · packs of 25 litres and up208 litres for $2,025.16 | $9.73 per litre | View at store |
| Lab AlleyUnited States | USP grade · packs of 25 kilograms and up25 kilograms for $243.90 | $9.76 per kilogram | View at store |
| Get Er BrewedUnited Kingdom | Grade not stated · packs of 50 grams to 1 kilogram100 grams for 1.50 GBP | $19.98 per kilogram | View at store |
| Lab AlleyUnited States | Grade not stated · Solution · packs of 1 to 25 litres18.9 litres for $408.81 | $21.60 per litre | View at store |
| Lab AlleyUnited States | ACS grade · packs of 25 kilograms and up25 kilograms for $574.36 | $22.97 per kilogram | View at store |
| Lab AlleyUnited States | Reagent grade · packs of 25 kilograms and up25 kilograms for $676.36 | $27.05 per kilogram | View at store |
| Lab AlleyUnited States | ACS grade · packs of 1 to 25 kilograms12.5 kilograms for $410.57 | $32.85 per kilogram | View at store |
| Lab AlleyUnited States | Reagent grade · packs of 1 to 25 kilograms12.5 kilograms for $529.47 | $42.36 per kilogram | View at store |
| Science CompanyUnited States | Grade not stated · packs of 50 grams to 1 kilogram500 grams for $24.95 | $49.90 per kilogram | View at store |
| Lab DepotUnited States | USP grade · packs of 1 to 25 kilograms12 kilograms for $720.85 | $60.07 per kilogram | View at store |
| Lab DepotUnited States | EP grade · packs of 1 to 25 kilograms12 kilograms for $720.85 | $60.07 per kilogram | View at store |
| Lab DepotUnited States | BP grade · packs of 1 to 25 kilograms12 kilograms for $720.85 | $60.07 per kilogram | View at store |
| Lab DepotUnited States | Food grade · packs of 1 to 25 kilograms12 kilograms for $831.75 | $69.31 per kilogram | View at store |
| Lab AlleyUnited States | Grade not stated · Solution · packs of 50 millilitres to 1 litre500 millilitres for $49.48 | $98.96 per litre | View at store |
| Lab DepotUnited States | ACS grade · packs of 1 to 25 kilograms12 kilograms for $1,340.83 | $112 per kilogram | View at store |
| Lab AlleyUnited States | Laboratory grade · packs of 50 grams to 1 kilogram500 grams for $70.65 | $141 per kilogram | View at store |
| Lab AlleyUnited States | USP grade · packs of 50 grams to 1 kilogram500 grams for $70.78 | $142 per kilogram | View at store |
| Lab AlleyUnited States | Reagent grade · packs of 50 grams to 1 kilogram500 grams for $80.14 | $160 per kilogram | View at store |
| Lab AlleyUnited States | ACS grade · packs of 50 grams to 1 kilogram500 grams for $90.09 | $180 per kilogram | View at store |
| Lab DepotUnited States | Food grade · packs of 50 grams to 1 kilogram500 grams for $161.69 | $323 per kilogram | View at store |
| Lab DepotUnited States | USP grade · packs of 50 grams to 1 kilogram500 grams for $164.26 | $329 per kilogram | View at store |
| Lab DepotUnited States | EP grade · packs of 50 grams to 1 kilogram500 grams for $164.26 | $329 per kilogram | View at store |
| Lab DepotUnited States | BP grade · packs of 50 grams to 1 kilogram500 grams for $164.26 | $329 per kilogram | View at store |
| Lab DepotUnited States | ACS grade · packs of 50 grams to 1 kilogram500 grams for $186.68 | $373 per kilogram | View at store |
Making a solution?
Pick the strength and how much you need. We work out the grams of Magnesium Sulfate and what they cost at the cheapest store we track.
- You need
- 120 grams
- of Magnesium Sulfate, molar mass 120.37 g/mol
- That much costs
- $0.89
- $0.89 per litre of solution, at the lowest price per gram we found
Weigh it out, dissolve it in less water than you need, then top up to the full amount.
Bulk suppliers in the US
26 companies make or distribute it, as reported to the US Environmental Protection Agency in 2020 and 2024.
- Global Chemical ResourcesDistributor · Ohio
- Wego Chemical & MineralDistributor · New York
- Advanced Micronutrient ProductsMaker · Michigan
- Avantor Performance MaterialsMaker · Kentucky
- Cameron ChemicalMaker · Virginia
- Everris NAMaker · Missouri
- Haifa North AmericaMaker · Florida
- ICLMaker · Missouri
- INEOSMaker · Illinois
- Mitsubishi Chemical AmericaMaker · Texas
- PQMaker · Illinois
- Southern IonicsMaker · Alabama, Louisiana
- SQM North AmericaMaker · Georgia
- TessenderloMaker · California
- ThatcherMaker · Arizona
- United InitiatorsMaker · Ohio
- BrenntagDistributor · California, Kentucky, Wisconsin · last reported 2020
- RedoxDistributor · California · last reported 2020
- Univar SolutionsDistributor · Washington · last reported 2020
- Valudor ProductsDistributor · California · last reported 2020
- ACS ChemicalMaker · New Jersey · last reported 2020
- NoltexMaker · Texas · last reported 2020
- Nouryon Functional ChemicalsMaker · Illinois · last reported 2020
- Ultra Yield MicronutrientsMaker · Washington · last reported 2020
- UPL NAMaker · North Carolina · last reported 2020
- VenatorMaker · Georgia, Illinois, Texas · last reported 2020
Your company? List it free and get bulk buyer requests.
Similar chemicals
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Used for
Chemical identity
- Formula
- MgO4S
- Molar mass
- 120.37 g/mol
- CAS number
- 7487-88-9
- InChIKey
- CSNNHWWHGAXBCP-UHFFFAOYSA-L
- Official record
- PubChem 24083
How we compare: each store's own price, turned into US dollars at European Central Bank rates of 2026-10-29, then divided by the pack size. Shipping and tax are not included.