HSDB 6304
HSDB 6304 - Names and Identifiers
| Name | 2,5-Dinitrophenol |
| Synonyms | 2,5-DNP HSDB 6304 NSC 90441 CCRIS 3103 BRN 1913411 2,5-Dinitrofenol 2,5-dinitro-pheno gamma-dinitro-pheno gamma-Dinitrophenol Phenol, 2,5-dinitro- Phenol, gamma-dinitro- 2,5-Dinitrofenol [Czech] 2,5-Dinitrophenol ( betta ) |
| CAS | 329-71-5 |
| EINECS | 206-348-1 |
| InChI | InChI=1/C6H4N2O5/c9-6-3-4(7(10)11)1-2-5(6)8(12)13/h1-3,9H |
HSDB 6304 - Physico-chemical Properties
| Molecular Formula | C6H4N2O5 |
| Molar Mass | 184.11 |
| Density | 1.7195 (rough estimate) |
| Melting Point | 103-106°C(lit.) |
| Boling Point | 318.03°C (rough estimate) |
| Flash Point | 141.5°C |
| Solubility | Solubility Sparingly soluble in water; soluble in ethanol, ether |
| Vapor Presure | 0.000346mmHg at 25°C |
| Color | Yellowish needles |
| Merck | 14,3281 |
| BRN | 1913411 |
| pKa | 5.21, 5.1, 5.0(at 25℃) |
| Refractive Index | 1.4738 (estimate) |
| Physical and Chemical Properties | Yellow needle-like crystals. Melting point 108 °c. Soluble in ether, hot ethanol and benzene, water-soluble. Can be volatilized with water vapor. |
HSDB 6304 - Reference Information
| pH indicator color change ph range | 4(colourless)-5.8(yellow) |
| main applications | liquid crystal films, electrophotographic materials, adhesives, inks, lubricants, preservation of cut flowers, food storage, materials for evaluating Dental cariesactivity |
| EPA chemical information | Information provided by: ofmpub.epa.gov (external link) |
| use | for organic synthesis. Used as an indicator in chemical analysis, the 70% ethanol solution is prepared into a 0.05-0.1% solution or its saturated aqueous solution is used as an indicator, and the pH color change range is 4.0 (colorless)-5.8 (yellow). |
| production method | obtained by nitration of m-nitrophenol. Heat 40% nitric acid to 40 ℃, slowly add m-nitrophenol, and add it at 40-60 ℃ for about 3 hours. Then heat at 50-70 ℃ for 1h, after cooling, pour the dilute acid solution, crush the solid, wash the acid with ice water, and filter dry. The resulting product was dissolved in cold ethanol, where the insoluble substance was 2, 5-dinitrophenol. |
| toxic substance data | information provided by: pubchem.ncbi.nlm.nih.gov (external link) |
Last Update：2024-04-09 15:16:49
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