4H-1-Benzopyran-4-one, 2,3-dihydro-2,2-dimethyl-6-nitro-
2,2-DIMETHYL-6-NITRO-CHROMAN-4-ONE
CAS: 111478-49-0
Molecular Formula: C11H11NO4
4H-1-Benzopyran-4-one, 2,3-dihydro-2,2-dimethyl-6-nitro- - Names and Identifiers
| Name | 2,2-DIMETHYL-6-NITRO-CHROMAN-4-ONE |
| Synonyms | 2,2-DIMETHYL-6-NITRO-CHROMAN-4-ONE 2,2-Dimethyl-6-nitro-2,3-dihydro-4H-chromen-4-one 2,3-Dihydro-2,2-dimethyl-6-nitro-4H-1-benzopyran-4-one 2,2-diMethyl-6-nitro-3,4-dihydro-2H-1-benzopyran-4-one 4H-1-Benzopyran-4-one, 2,3-dihydro-2,2-dimethyl-6-nitro- |
| CAS | 111478-49-0 |
| InChI | InChI=1/C11H11NO4/c1-11(2)6-9(13)8-5-7(12(14)15)3-4-10(8)16-11/h3-5H,6H2,1-2H3 |
4H-1-Benzopyran-4-one, 2,3-dihydro-2,2-dimethyl-6-nitro- - Physico-chemical Properties
| Molecular Formula | C11H11NO4 |
| Molar Mass | 221.21 |
| Density | 1.270±0.06 g/cm3(Predicted) |
| Melting Point | 373℃ |
| Boling Point | 365.9±42.0 °C(Predicted) |
| Flash Point | 171.1°C |
| Vapor Presure | 1.52E-05mmHg at 25°C |
| Storage Condition | 2-8°C |
| Refractive Index | 1.556 |
4H-1-Benzopyran-4-one, 2,3-dihydro-2,2-dimethyl-6-nitro- - Introduction
properties: DNPH molecular formula is C12H13NO5, relative molecular mass is 251.24. It is not readily soluble in water and is soluble in organic solvents such as ethanol and chloroform. DNPH has strong oxidation and toxicity.
Use: DNPH can be used as a chemical intermediate and an oxidant in organic synthesis. It can also be used for derivatization reagents in analytical chemistry, mainly for the detection of volatile organic compounds (VOCs) in air and water. DNPH can react with a variety of VOCs to form derivatives, which is convenient for subsequent analysis and measurement.
Preparation method: DNPH can be prepared by nitro reaction. First, 2,2-dimethyl-6-methoxy-dimethylbenzopyran-4-one is reacted with nitric acid and then treated with base to give 2,2-dimethyl-6-nitro-dimethylmethoxybenzopyran-4-one.
Safety Information: DNPH is irritating to the eyes, skin and respiratory tract. Avoid inhalation, contact with skin, or entry into eyes during operation. In case of accidental contact, rinse immediately with plenty of water. In addition, DNPH also has certain carcinogenicity and teratogenicity, so it is necessary to comply with relevant safety procedures when using and storing, and ensure good ventilation conditions. Local regulations should be followed when disposing of waste.
Last Update：2024-04-10 22:29:15
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