7-Naphthalenedisulfonic Acid CAS 5724-16-3
| CAS No. | 5724-16-3 |
| Molecular Formula | C10H8O6S2 |
| Molecular Weight | 288.30 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of 7-Naphthalenedisulfonic Acid is closely related to a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
CATO supplies 7-Naphthalenedisulfonic Acid (CAS 5724-16-3), a certified reference material (molecular formula C10H8O6S2, MW 288.30 g/mol) for analytical method development and quality control.
7-Naphthalenedisulfonic Acid (C10H8O6S2) contains a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system. It is notably hygroscopic, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
Physical & Chemical Properties
| Molecular Formula | C10H8O6S2 |
| Molecular Weight | 288.30 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1958 |
| Sulfur Atoms | 2 |
Related Naphthalenedisulfonic Standards
- 1,5-Naphthalenedisulfonic acid (CAS 81-04-9)
- 2,7-Naphthalenedisulfonic acid (CAS 92-41-1)
- 1,5-Naphthalenedisulfonic Acid (CAS 20779-13-9)
- 1,3-Naphthalenedisulfonic acid, 6-amino-, sodium salt (1:1) (CAS 147708-57-4)
- 1,5-Naphthalenedisulfonic acid, 3-[2-(4-amino-5-methoxy-2-methylphenyl)diazenyl]- (CAS 61827-75-6)
- 1,5-Naphthalenedisulfonic acid sodium salt (CAS 1655-29-4)
- 207569-02-6 1,5-Naphthalenedisulfonic acid, disodium salt hydrate DTXSID0044315 (CAS 207569-02-6)
- 1,5-Naphthalenedisulfonic Acid (CAS 211366-30-2)
Recommended Standards
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- 6-Chloro-5-fluoro-2-methylpyrimidin-4(3H)-one (CAS 105806-14-2)
- 1-(Pyridin-3-yl)nonan-1-one (CAS 110141-48-5)
- 5-(Chloromethyl)-3,4'-bipyridine (CAS 1227590-18-2)
- (R)-1-(3-fluoro-4-methoxyphenyl)-2-methoxyethan-1-amine (CAS 1270081-95-2)
- 4'-Carbamimidoyl-[1,1'-biphenyl]-4-carboxylic acid (CAS 1521718-19-3)
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