Molekula
Pamoic acid disodium 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
Pamoic acid disodium salt is a sodium salt of pamoic acid, primarily used as an analytical reagent and in pharmaceutical formulations as a salt-forming counterion. This chemical has a CAS number of 6640-22-8, with the molecular formula C23H14O6Na2 and a molecular weight of 432.33. It can be stored at ambient conditions and carries no signal word for hazard classification. Molekula supplies Pamoic acid disodium 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.
-
25 g — $78.60 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 | Light yellow to yellow/green powder |
| Water | 3.7~4.5% |
| Identification | Conforms to reference |
| Colour of Solution | ≤0.12 (UV) |
| Assay (UV) | 78.6~88.4% |
| Sodium (Na) | 9.9~12.5% |
| Specification | ≤3.0% |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | Ambient |
Identification
| Property | Value |
|---|---|
| SKU | 54729581 |
| CAS Number | 6640-22-8 |
| IUPAC Name | disodium;3-carboxy-1-[(3-carboxy-2-oxidonaphthalen-1-yl)methyl]naphthalen-2-olate |
| EC Number | 229-653-1 |
| Molecular Formula | C23H14O6Na2 |
| Molecular Weight | 432.33 |
| Exact Mass | 432.0586 |
| SMILES | C1=CC=C2C(=C1)C=C(C(=C2CC3=C(C(=CC4=CC=CC=C43)C(=O)O)[O-])[O-])C(=O)O.[Na+].[Na+] |
| InChIKey | YGLLICRFEVEWOZ-UHFFFAOYSA-L |
| InChI | InChI=1S/C23H16O6.2Na/c24-20-16(14-7-3-1-5-12(14)9-18(20)22(26)27)11-17-15-8-4-2-6-13(15)10-19(21(17)25)23(28)29;;/h1-10,24-25H,11H2,(H,26,27)(H,28,29);;/q;2*+1/p-2 |
| PubChem CID | 54676156 |
| REACH Code | Y113 |
| HTS Code | 2918.29.7500 |
| Tariff Code | 2918290090 |
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
- 2-Naphthalenecarboxylic acid, 4,4'-methylenebis(3-hydroxy-, disodium salt
- 2-Naphthalenecarboxylic acid, 4,4'-methylenebis(3-hydroxy-, sodium salt (1:2)
- 4,4'-Methylenebis(3-hydroxy-2-naphthoic acid) disodium salt
- Disodium 4,4'-methylenebis(3-hydroxy-2-naphthoate)
- Disodium methylenebis(2-hydroxy-3-naphthoate)
- Disodium pamoate
- pamoic acid disodium
- Pamoic Acid Disodium Salt Monohydrate
- Sodium 4,4'-methylenebis(3-hydroxy-2-naphthoate)
- Sodium pamoate
Frequently asked questions
What is pamoic acid disodium salt commonly used for?
Pamoic acid disodium salt is primarily used as a source of the pamoate counterion in pharmaceutical formulations, forming drug salts that are less water-soluble than the parent drug (e.g., pyrantel pamoate, hydroxyzine pamoate, olanzapine pamoate depot) for sustained release, taste masking or local action.
What is the chemical formula and molecular weight of pamoic acid disodium salt?
The chemical formula is C₂₃H₁₄O₆Na₂, and the molecular weight is 432.33 g/mol.
How should pamoic acid disodium salt be stored?
Store at ambient temperature in a dry, well-ventilated area, away from incompatible substances.
What grades or purities of pamoic acid disodium salt does Molekula supply?
Molekula supplies pharmaceutical-grade pamoic acid disodium salt, meeting USP/EP/JP standards where applicable.
Can Molekula supply pamoic acid disodium salt in bulk quantities?
Yes, we offer bulk quantities of pamoic acid disodium salt, with flexible packaging options (drums, bags, or custom solutions).
What documentation is provided with an order of pamoic acid disodium salt?
Each order includes a Certificate of Analysis (CoA), Material Safety Data Sheet (MSDS), and batch-specific documentation for traceability.
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.