Cheapest by weight
$9,469 per kilogram
Price per unit, converted to US dollars
At Lab Alley, United States
- Pack
- 100 grams for $946.91
- Grade
- Laboratory grade · packs of 50 grams to 1 kilogram
Potassium suppliers and prices
- Formula
- K
- CAS number
- 7440-09-7
- Molar mass
- 39.10 g/mol
Smallest amount to spend
$26.00 for 1 gram
Total for one pack, in the store's own currency
At Frontier Specialty Chemicals, United States
- Works out at
- $26.00 per gram
- Grade
- Grade not stated · packs of 0.5 to 2 grams
6 offers from 2 stores · Prices checked October 28, 2026 · Prices run from $9,469 to $212 per kilogram, because a bigger pack costs less per kilogram.
Show prices per
Every price we found
6 prices, cheapest first
| Store | Grade and pack | Price | Link |
|---|---|---|---|
| Lab AlleyUnited States | Laboratory grade · packs of 50 grams to 1 kilogram100 grams for $946.91 | $9,469 per kilogram | View at store |
| Lab AlleyUnited States | Laboratory grade · packs of 10 to 50 grams20 grams for $251.15 | $12.56 per gram | View at store |
| Frontier Specialty ChemicalsUnited States | Grade not stated · packs of 10 to 50 grams25 grams for $428.00 | $17.12 per gram | View at store |
| Frontier Specialty ChemicalsUnited States | Grade not stated · packs of 2 to 10 grams5 grams for $110.00 | $22.00 per gram | View at store |
| Frontier Specialty ChemicalsUnited States | Grade not stated · packs of 0.5 to 2 grams1 gram for $26.00 | $26.00 per gram | View at store |
| Frontier Specialty ChemicalsUnited States | Grade not stated · packs under 0.5 grams250 milligrams for $53.00 | $212 per gram | View at store |
Making a solution?
Pick the strength and how much you need. We work out the grams of Potassium and what they cost at the cheapest store we track.
- You need
- 39.1 milligrams
- of Potassium, molar mass 39.10 g/mol
- That much costs
- $0.37
- $3.70 per litre of solution, at the lowest price per gram we found
- Cheapest way to buy it
- $26.00
- 1 pack of 1 gram at Frontier Specialty Chemicals
- View at Frontier Specialty Chemicals
Weigh it out, dissolve it in less water than you need, then top up to the full amount.
Bulk suppliers in the US
2 companies make or distribute it, as reported to the US Environmental Protection Agency in 2020.
- BASFMaker · Pennsylvania
- ShellMaker · Texas
Your company? List it free and get bulk buyer requests.
Chemical identity
- Formula
- K
- Molar mass
- 39.10 g/mol
- CAS number
- 7440-09-7
- InChIKey
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N
- Official record
- PubChem 5462222
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.