Cheapest by weight
$108 per kilogram
Price per unit, converted to US dollars
At Lab Alley, United States
- Pack
- 25 kilograms for $2,690.53
- Grade
- ACS grade · packs of 25 kilograms and up
Phenolphthalein suppliers and prices
- Formula
- C20H14O4
- CAS number
- 77-09-8
- Molar mass
- 318.30 g/mol
Smallest amount to spend
$14.38 for 56.7 grams
Total for one pack, in the store's own currency
At Essential Depot, United States
- Works out at
- $254 per kilogram
- Grade
- Grade not stated · packs of 50 grams to 1 kilogram
6 offers from 2 stores · Prices checked October 28, 2026 · Prices run from $108 to $10.09 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 | ACS grade · packs of 25 kilograms and up25 kilograms for $2,690.53 | $108 per kilogram | View at store |
| Lab AlleyUnited States | ACS grade · packs of 1 to 25 kilograms12 kilograms for $1,337.45 | $111 per kilogram | View at store |
| Essential DepotUnited States | Grade not stated · packs of 50 grams to 1 kilogram56.7 grams for $14.38 | $254 per kilogram | View at store |
| Lab AlleyUnited States | ACS grade · packs of 50 grams to 1 kilogram500 grams for $206.68 | $413 per kilogram | View at store |
| Lab AlleyUnited States | ACS grade · packs of 10 to 50 grams25 grams for $50.47 | $2.02 per gram | View at store |
| Lab AlleyUnited States | ACS grade · packs of 2 to 10 grams5 grams for $50.47 | $10.09 per gram | View at store |
Making a solution?
Pick the strength and how much you need. We work out the grams of Phenolphthalein and what they cost at the cheapest store we track.
- You need
- 318 grams
- of Phenolphthalein, molar mass 318.30 g/mol
- That much costs
- $34.26
- $34.26 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.
Similar chemicals
Sold by
Used for
Chemical identity
- Formula
- C20H14O4
- Molar mass
- 318.30 g/mol
- CAS number
- 77-09-8
- InChIKey
- KJFMBFZCATUALV-UHFFFAOYSA-N
- Official record
- PubChem 4764
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.