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HS Code |
876354 |
| Iupac Name | 1-(2-hydroxynaphthalen-1-ylazo)naphthalene-2,4-disulfonic acid |
| Molecular Formula | C20H14N2O7S2 |
| Molecular Weight | 458.46 g/mol |
| Appearance | Reddish-brown powder |
| Solubility In Water | Soluble |
| Melting Point | Decomposes above 300°C |
| Cas Number | 5461-08-9 |
| λmax | 520 nm (in aqueous solution) |
| Ph Range Of Color Change | 3.5–4.5 |
| Common Uses | Metal ion complexation indicator (especially for calcium and magnesium) |
| Stability | Stable under recommended storage conditions |
| Synonyms | NAPHTHOL BLUE BLACK; Naphthol AS-D |
| Storage Conditions | Store at room temperature, keep tightly closed, protect from light |
| Hazard Statements | May cause eye, skin, and respiratory irritation |
| Ec Number | 226-748-7 |
As an accredited 1(2-hydroxy-1-naphthylazo)2-*naphthol-4-sulfonic factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
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Competitive 1(2-hydroxy-1-naphthylazo)2-*naphthol-4-sulfonic prices that fit your budget—flexible terms and customized quotes for every order.
For samples, pricing, or more information, please contact us at +8615371019725 or mail to sales7@boxa-chem.com.
We will respond to you as soon as possible.
Tel: +8615371019725
Email: sales7@boxa-chem.com
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