4-Nitro-1,8-naphthalenedicarboxylic anhydride
4-nitro-1,8-naphthalic anhydride
CAS: 34087-02-0;6642-29-1
Molecular Formula: C12H5NO5
4-Nitro-1,8-naphthalenedicarboxylic anhydride - Names and Identifiers
4-Nitro-1,8-naphthalenedicarboxylic anhydride - Physico-chemical Properties
| Molecular Formula | C12H5NO5 |
| Molar Mass | 243.17 |
| Density | 1.637±0.06 g/cm3(Predicted) |
| Melting Point | 226-229 °C (lit.) |
| Boling Point | 509.9±33.0 °C(Predicted) |
| Flash Point | 264.3°C |
| Vapor Presure | 1.24E-10mmHg at 25°C |
| BRN | 237909 |
| Storage Condition | Inert atmosphere,Room Temperature |
| Refractive Index | 1.742 |
4-Nitro-1,8-naphthalenedicarboxylic anhydride - Risk and Safety
| Hazard Symbols | Xi - Irritant |
| Risk Codes | 36/37/38 - Irritating to eyes, respiratory system and skin. |
| Safety Description | S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S36 - Wear suitable protective clothing. |
| WGK Germany | 3 |
4-Nitro-1,8-naphthalenedicarboxylic anhydride - Introduction
4-nitro-1,8-naphthalic anhydride is an organic compound with the chemical formula C12H5NO5. The following is a description of its nature, use, preparation and safety information:
1. nature:
-Appearance: 4-nitro-1,8-naphthalic anhydride as yellow crystals or powdery solid.
-Solubility: It is soluble in most organic solvents, such as ether, dichloromethane and alcohols.
-Melting point: The melting point is about 230-235°C.
-Stability: It will decompose at high temperature and produce toxic oxide gas.
2. use:
-Chemical reagent: 4-nitro-1,8-naphthalic anhydride can be used as a reagent in organic synthesis, for example, for the synthesis of organic compounds such as naphthalene red.
-Light-sensitive media: It can also be used as a component of light-sensitive media, such as photographic negatives and photosensitive resins.
3. Preparation method:
4-nitro-1,8-naphthalic anhydride can be synthesized by the following steps:
-First, 1,8-naphthalene dicarboxylic acid is reacted with sodium nitrite to generate 1,8-naphthalene dicarboxylic acid nitrosate.
-Nitroso-1, 8-naphthalenedicarboxylic acid nitroso-4-nitro-1, 8-naphthalenedicarboxylic acid nitroso-1 is then obtained by a nitration reaction.
-Finally, this nitrosoester is converted into 4-nitro-1,8-naphthalic anhydride through an anhydridation reaction.
4. Safety Information:
- 4-nitro-1,8-naphthalic anhydride is a toxic substance and should be avoided by inhalation, skin contact and ingestion.
-Appropriate protective equipment such as gloves and goggles should be worn during operation.
-should be in a well-ventilated place to operate, away from the source of fire.
-Be careful to avoid contact with oxidants and flammable substances during storage and handling.
-In case of accidental contact with the substance, rinse immediately with plenty of water and seek medical help.
1. nature:
-Appearance: 4-nitro-1,8-naphthalic anhydride as yellow crystals or powdery solid.
-Solubility: It is soluble in most organic solvents, such as ether, dichloromethane and alcohols.
-Melting point: The melting point is about 230-235°C.
-Stability: It will decompose at high temperature and produce toxic oxide gas.
2. use:
-Chemical reagent: 4-nitro-1,8-naphthalic anhydride can be used as a reagent in organic synthesis, for example, for the synthesis of organic compounds such as naphthalene red.
-Light-sensitive media: It can also be used as a component of light-sensitive media, such as photographic negatives and photosensitive resins.
3. Preparation method:
4-nitro-1,8-naphthalic anhydride can be synthesized by the following steps:
-First, 1,8-naphthalene dicarboxylic acid is reacted with sodium nitrite to generate 1,8-naphthalene dicarboxylic acid nitrosate.
-Nitroso-1, 8-naphthalenedicarboxylic acid nitroso-4-nitro-1, 8-naphthalenedicarboxylic acid nitroso-1 is then obtained by a nitration reaction.
-Finally, this nitrosoester is converted into 4-nitro-1,8-naphthalic anhydride through an anhydridation reaction.
4. Safety Information:
- 4-nitro-1,8-naphthalic anhydride is a toxic substance and should be avoided by inhalation, skin contact and ingestion.
-Appropriate protective equipment such as gloves and goggles should be worn during operation.
-should be in a well-ventilated place to operate, away from the source of fire.
-Be careful to avoid contact with oxidants and flammable substances during storage and handling.
-In case of accidental contact with the substance, rinse immediately with plenty of water and seek medical help.
Last Update：2024-04-10 22:29:15
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Multiple Specifications
Product Name: 4-Nitronaphthalene-1,8-dicarboxylic anhydride Visit Supplier Webpage Request for quotationCAS: 34087-02-0
Tel: 18301782025
Email: 3008007409@qq.com
Mobile: 18021002903
QQ: 3008007409
Wechat: 18301782025
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