Naphthoresorcinol
1,3-Dihydroxynaphthalene
CAS: 132-86-5
Molecular Formula: C10H8O2
Naphthoresorcinol - Names and Identifiers
| Name | 1,3-Dihydroxynaphthalene |
| Synonyms | Naphthoresorcin NAPHTORESORCINE NAPHTHORESORCINE Naphthoresorcinol naphtharesorcinol NAPHTHORESORCINOL 1,3-Naphthalenediol 1,3-NAPHTHALENEDIOL Naphthalene-1,3-diol naphthalene-1,3-diol Naphthalenediol-(1,3) 1,3-Dihydroxynaphthalene 1,3-DIHYDROXYNAPHTHALENE 3-Hydroxybenzocyclohexadien-1-one |
| CAS | 132-86-5 |
| EINECS | 205-079-7 |
| InChI | InChI=1/C10H8O2/c11-8-5-7-3-1-2-4-9(7)10(12)6-8/h1-6,11-12H |
Naphthoresorcinol - Physico-chemical Properties
| Molecular Formula | C10H8O2 |
| Molar Mass | 160.17 |
| Density | 1.0924 (rough estimate) |
| Melting Point | 123-125°C(lit.) |
| Boling Point | 246.06°C (rough estimate) |
| Flash Point | 185.5°C |
| Water Solubility | Soluble in ethanol (50 mg/ml), and water. |
| Solubility | Soluble in ethanol (50 mg/ml), and water. |
| Vapor Presure | 9.93E-06mmHg at 25°C |
| Appearance | White to yellow to brown powder |
| Color | white to tan |
| Merck | 14,6396 |
| BRN | 2044002 |
| pKa | 9.15±0.40(Predicted) |
| Storage Condition | Keep in dark place,Inert atmosphere,Room temperature |
| Sensitive | Light Sensitive |
| Refractive Index | 1.5418 (estimate) |
| MDL | MFCD00003965 |
| Physical and Chemical Properties | Pink to yellow leaf-like crystals. Melting point 124-125 ℃, soluble in water, alcohol, ether. |
Naphthoresorcinol - Risk and Safety
| Hazard Symbols | Xi - Irritant |
| Risk Codes | R36/37/38 - Irritating to eyes, respiratory system and skin. R22 - Harmful if swallowed |
| Safety Description | S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S37/39 - Wear suitable gloves and eye/face protection |
| WGK Germany | 3 |
| RTECS | QJ4725000 |
| FLUKA BRAND F CODES | 8-9-23 |
| TSCA | Yes |
| HS Code | 29029090 |
Naphthoresorcinol - Introduction
Easily soluble in water, alcohol, ether. Slightly soluble in acetone, benzene and petroleum ether.
Last Update：2022-10-16 17:13:23
Naphthoresorcinol - Reference Information
| EPA chemical information | Information provided by: ofmpub.epa.gov (external link) |
| Biological activity | Naphthoresorcinol (1, 3-Dihydroxyynaphthalene) is a fluorescent dye (λex = 330 nm, λem = 380 nm), which can react with NPPD (a tracer) and concentrated HCl and show red. Naphthoresorcinol can also be used as a background electrolyte (BGE) to determine carbohydrates. |
| use | sugar and oil reagents to measure glucuronic acid in urine. |
| Production method | It is obtained by decarboxylation of 1, 3-dihydroxy-2-naphthoic acid. |
Last Update：2024-04-09 20:52:54
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