Cheapest by weight
$10.63 per kilogram
Price per unit, converted to US dollars
At Lab Alley, United States
- Pack
- 25 kilograms for $265.78
- Grade
- Laboratory grade · packs of 25 kilograms and up
Calcium Oxide suppliers and prices
- Formula
- CaO
- CAS number
- 1305-78-8
- Molar mass
- 56.08 g/mol
Smallest amount to spend
$58.12 for 500 grams
Total for one pack, in the store's own currency
At GFS Chemicals, United States
- Works out at
- $116 per kilogram
- Grade
- Reagent grade · packs of 50 grams to 1 kilogram
13 offers from 2 stores · Prices checked October 28, 2026 · Prices run from $10.63 to $4.04 per kilogram, because a bigger pack costs less per kilogram.
Show prices per
Every price we found
16 prices, cheapest first
| Store | Grade and pack | Price | Link |
|---|---|---|---|
| Lab AlleyUnited States | Laboratory grade · packs of 25 kilograms and up25 kilograms for $265.78 | $10.63 per kilogram | View at store |
| Lab AlleyUnited States | Laboratory grade · packs of 1 to 25 kilograms22.7 kilograms for $248.17 | $10.94 per kilogram | View at store |
| Lab AlleyUnited States | USP grade · packs of 25 kilograms and up25 kilograms for $309.37 | $12.37 per kilogram | View at store |
| Lab AlleyUnited States | Food grade · packs of 25 kilograms and up25 kilograms for $309.37 | $12.37 per kilogram | View at store |
| Lab AlleyUnited States | USP grade · packs of 1 to 25 kilograms22.7 kilograms for $349.46 | $15.41 per kilogram | View at store |
| Lab AlleyUnited States | Food grade · packs of 1 to 25 kilograms22.7 kilograms for $349.46 | $15.41 per kilogram | View at store |
| Lab AlleyUnited States | ACS grade · packs of 1 to 25 kilograms22.7 kilograms for $1,237.71 | $54.57 per kilogram | View at store |
| Lab AlleyUnited States | ACS grade · packs of 25 kilograms and up25 kilograms for $1,375.91 | $55.04 per kilogram | View at store |
| GFS ChemicalsUnited States | Reagent grade · packs of 1 to 25 kilograms10 kilograms for $618.12 | $61.81 per kilogram | View at store |
| GFS ChemicalsUnited States | Reagent grade · packs of 50 grams to 1 kilogram500 grams for $58.12 | $116 per kilogram | View at store |
| Lab AlleyUnited States | Laboratory grade · packs of 50 grams to 1 kilogram500 grams for $72.74 | $145 per kilogram | View at store |
| Lab AlleyUnited States | USP grade · packs of 50 grams to 1 kilogram500 grams for $79.66 | $159 per kilogram | View at store |
| Lab AlleyUnited States | Food grade · packs of 50 grams to 1 kilogram500 grams for $79.66 | $159 per kilogram | View at store |
| Lab AlleyUnited States | ACS grade · packs of 50 grams to 1 kilogram500 grams for $86.52 | $173 per kilogram | View at store |
| GFS ChemicalsUnited States | Grade not stated · packs of 50 grams to 1 kilogram500 grams for $801.89 | $1,604 per kilogram | View at store |
| GFS ChemicalsUnited States | Grade not stated · packs of 10 to 50 grams25 grams for $101.07 | $4.04 per gram | View at store |
Making a solution?
Pick the strength and how much you need. We work out the grams of Calcium Oxide and what they cost at the cheapest store we track.
- You need
- 56.1 grams
- of Calcium Oxide, molar mass 56.08 g/mol
- That much costs
- $0.60
- $0.60 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
18 companies make or distribute it, as reported to the US Environmental Protection Agency in 2020 and 2024.
- ChemspecDistributor · Ohio
- Advanced Micronutrient ProductsMaker · Michigan
- AmericarbMaker · Maine
- AOCMaker · Tennessee
- BASFMaker · New Jersey, Ohio
- ClariantMaker · Kentucky, North Carolina
- HoneywellMaker · Illinois
- Specialty MineralsMaker · Connecticut
- UOP MobileMaker · Alabama
- W R GraceMaker · Maryland
- Denka CA OfficeDistributor · California · last reported 2020
- Blanchard RefiningMaker · Texas · last reported 2020
- Brady MccaslandMaker · Illinois · last reported 2020
- Dallas Group of AmericaMaker · Texas · last reported 2020
- Haldor TopsoeMaker · Texas · last reported 2020
- ICLMaker · Missouri · last reported 2020
- Johnson MattheyMaker · Georgia · last reported 2020
- Sika AutomotiveMaker · North Carolina · last reported 2020
Your company? List it free and get bulk buyer requests.
Sold by
Chemical identity
- Formula
- CaO
- Molar mass
- 56.08 g/mol
- CAS number
- 1305-78-8
- InChIKey
- ODINCKMPIJJUCX-UHFFFAOYSA-N
- Official record
- PubChem 14778
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.