Molekula
Phenolphthalein diphosphate tetrasodium salt
Supplying 4,500+ customers in over 80 countries
ISO 9001:2015 & ISO 14001:2015 certified · Supplying laboratories and industry since 2000 · Listed pack sizes are a starting point — we manufacture, source and repack to the quantity you need
Phenolphthalein diphosphate tetrasodium salt is a water-soluble, pH-sensitive compound used in biochemical assays and as a chromogenic substrate for phosphatase detection, as enzymatic hydrolysis releases phenolphthalein, which turns pink to red under alkaline conditions. It is a derivative of phenolphthalein, designed for enhanced solubility and stability in aqueous solutions. CAS: 68807-90-9, Molecular Formula: C20H16Na4O12P2, Molecular Weight: 602.2 g/mol, Storage: -15 to -20 °C, Signal Word: None. Molekula supplies Phenolphthalein diphosphate tetrasodium salt from research to bulk quantities with full documentation and ISO 9001:2015 traceability.
Example image for illustration only. Other packaging and pack sizes are available.
Pricing & pack sizes
These pack sizes aren't a limit. Molekula manufactures, sources and repacks to order — if you need 500 kg and only see 1 kg listed, . We quote from grams to multi-tonne.
Need a different size? Add the nearest pack and change the size in your basket — we price it at the same rate per unit.
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5 g — $135.20 per pack
Need a different quantity or pack?
Tell us how much you need and when — drums, IBCs, sacks or a one-off bulk lot. We'll manufacture or source it and come back with a price.
Prices exclude VAT/sales tax and shipping.
Specifications
| Property | Value |
|---|---|
| Appearance | White to faint yellow or tan powder |
| Assay (Titration) | 95 - 101% |
| Phenolphthalein | 0.1% max |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | -15 to -20 °C |
Identification
| Property | Value |
|---|---|
| SKU | 11078057 |
| CAS Number | 68807-90-9 |
| IUPAC Name | tetrasodium;[4-[3-oxo-1-(4-phosphonatooxyphenyl)-2-benzofuran-1-yl]phenyl] phosphate;dihydrate |
| EC Number | 272-326-3 |
| Molecular Formula | C20H16Na4O12P2 |
| Molecular Weight | 602.2 |
| Exact Mass | 601.9708 |
| SMILES | C1=CC=C2C(=C1)C(=O)OC2(C3=CC=C(C=C3)OP(=O)([O-])[O-])C4=CC=C(C=C4)OP(=O)([O-])[O-].O.O.[Na+].[Na+].[Na+].[Na+] |
| InChIKey | QYFYAAPDTZOYPC-UHFFFAOYSA-J |
| InChI | InChI=1S/C20H16O10P2.4Na.2H2O/c21-19-17-3-1-2-4-18(17)20(28-19,13-5-9-15(10-6-13)29-31(22,23)24)14-7-11-16(12-8-14)30-32(25,26)27;;;;;;/h1-12H,(H2,22,23,24)(H2,25,26,27);;;;;2*1H2/q;4*+1;;/p-4 |
| PubChem CID | 3085390 |
| REACH Code | Y113 |
| HTS Code | 2932.20.3000 |
| Tariff Code | 2932209090 |
Safety & GHS
Precautionary statements
- P280 Wear protective gloves/protective clothing/eye protection/face protection
Documents
Safety Data Sheets (SDS)
Available in English, German, Spanish, French, Italian, Portuguese, Arabic, Dutch.
Certificate of Analysis (CoA) by batch
Enter a lot or batch number to retrieve the CoA for that specific batch. We can generate one from spec data if no PDF is on file.
Synonyms
- C20H16Na4O12P2
- Phenolphthalein bisphosphate tetrasodium salt
- QYFYAAPDTZOYPC-UHFFFAOYSA-J
- Tetrasodium isobenzofuran-3,3-diylbis(p-phenylene) bis(phosphate)
Frequently asked questions
What is Phenolphthalein diphosphate tetrasodium salt used for?
It is primarily used as a chromogenic substrate in enzyme assays, particularly for detecting phosphatase activity in biochemical research.
What is the chemical formula and molecular weight?
The formula is C20H16Na4O12P2 with a molecular weight of 602.2 g/mol.
How should it be stored?
Store at -15 to -20 °C to maintain stability and prevent degradation.
What grade is available?
Available in research grade; specific purity details can be provided upon request.
Can Molekula supply it in bulk?
Yes, bulk quantities are available—please contact our sales team for pricing and availability.
What documentation comes with the order?
Each order includes a Certificate of Analysis (CoA) and safety data sheet (SDS) with the shipment.
Ready to order or need a custom pack?
Tell us the product, grade, and quantity — Molekula usually responds within one working day with pricing and lead time.