Cheapest by weight
$3.06 per kilogram
Price per unit, converted to US dollars
At The Soap Kitchen, United Kingdom
- Pack
- 25 kilograms for 57.50 GBP
- Grade
- Grade not stated · packs of 25 kilograms and up
Borax suppliers and prices
- Formula
- B4H20Na2O17
- CAS number
- 1303-96-4
- Molar mass
- 381.40 g/mol
Smallest amount to spend
2.95 GBP for 500 grams
Total for one pack, in the store's own currency
At The Soap Kitchen, United Kingdom
- Works out at
- $7.86 per kilogram
- Grade
- Grade not stated · packs of 50 grams to 1 kilogram
19 offers from 4 stores · Prices checked October 28, 2026 · Prices run from $3.06 to $50.47 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
19 prices, cheapest first
| Store | Grade and pack | Price | Link |
|---|---|---|---|
| The Soap KitchenUnited Kingdom | Grade not stated · packs of 25 kilograms and up25 kilograms for 57.50 GBP | $3.06 per kilogram | View at store |
| The Soap KitchenUnited Kingdom | Grade not stated · packs of 1 to 25 kilograms1 kilogram for 3.90 GBP | $5.19 per kilogram | View at store |
| The Soap KitchenUnited Kingdom | Grade not stated · packs of 50 grams to 1 kilogram500 grams for 2.95 GBP | $7.86 per kilogram | View at store |
| Lab AlleyUnited States | Grade not stated · Solution 4% · packs of 1 to 25 litres18.9 litres for $246.23 | $13.01 per litre | View at store |
| Lab AlleyUnited States | Laboratory grade · packs of 25 kilograms and up25 kilograms for $416.99 | $16.68 per kilogram | View at store |
| Lab AlleyUnited States | Laboratory grade · packs of 1 to 25 kilograms12 kilograms for $277.59 | $23.13 per kilogram | View at store |
| Science CompanyUnited States | Grade not stated · packs of 50 grams to 1 kilogram500 grams for $12.95 | $25.90 per kilogram | View at store |
| Lab AlleyUnited States | Reagent grade · packs of 1 to 25 kilograms12 kilograms for $490.27 | $40.86 per kilogram | View at store |
| Lab AlleyUnited States | Reagent grade · packs of 25 kilograms and up25 kilograms for $1,158.40 | $46.34 per kilogram | View at store |
| Lab DepotUnited States | Technical grade · packs of 1 to 25 kilograms12 kilograms for $838.90 | $69.91 per kilogram | View at store |
| Lab DepotUnited States | ACS grade · packs of 1 to 25 kilograms12 kilograms for $909.34 | $75.78 per kilogram | View at store |
| Lab AlleyUnited States | Grade not stated · Solution 4% · packs of 50 millilitres to 1 litre500 millilitres for $49.48 | $98.96 per litre | View at store |
| Lab AlleyUnited States | Laboratory grade · packs of 50 grams to 1 kilogram500 grams for $50.47 | $101 per kilogram | View at store |
| Lab AlleyUnited States | Reagent grade · packs of 50 grams to 1 kilogram500 grams for $50.47 | $101 per kilogram | View at store |
| Lab DepotUnited States | USP grade · packs of 1 to 25 kilograms12 kilograms for $1,316.08 | $110 per kilogram | View at store |
| Lab DepotUnited States | Technical grade · packs of 50 grams to 1 kilogram500 grams for $100.51 | $201 per kilogram | View at store |
| Lab DepotUnited States | ACS grade · packs of 50 grams to 1 kilogram500 grams for $150.15 | $300 per kilogram | View at store |
| Lab DepotUnited States | USP grade · packs of 50 grams to 1 kilogram500 grams for $158.41 | $317 per kilogram | View at store |
| Lab AlleyUnited States | Reagent grade · packs of 0.5 to 2 grams1 gram for $50.47 | $50.47 per gram | View at store |
Making a solution?
Pick the strength and how much you need. We work out the grams of Borax and what they cost at the cheapest store we track.
- You need
- 381 grams
- of Borax, molar mass 381.40 g/mol
- That much costs
- $1.17
- $1.17 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
4 companies make or distribute it, as reported to the US Environmental Protection Agency in 2020 and 2024.
- Advanced Micronutrient ProductsMaker · Michigan
- Haifa North AmericaMaker · Florida
- BASFMaker · New Jersey · last reported 2020
- Everris NAMaker · Missouri · last reported 2020
Your company? List it free and get bulk buyer requests.
Similar chemicals
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Used for
Chemical identity
- Formula
- B4H20Na2O17
- Molar mass
- 381.40 g/mol
- CAS number
- 1303-96-4
- InChIKey
- CDMADVZSLOHIFP-UHFFFAOYSA-N
- Official record
- PubChem 16211214
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.