846-20-8 - Names and Identifiers
| Name | 2-bromo-1,4,5,8-naphthalenetetracarboxylic acid dianhydride
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| Synonyms | 2-Bromonaphthalene-1,4,5,8-tetracarboxylic Dianhydride
4-Bromoisochromeno[6,5,4-def]isochromene-1,3,6,8-tetraone
2-bromo-1,4,5,8-naphthalenetetracarboxylic acid dianhydride
[2]Benzopyrano[6,5,4-def][2]benzopyran-1,3,6,8-tetrone, 4-bromo-
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| CAS | 846-20-8
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846-20-8 - Physico-chemical Properties
| Molecular Formula | C14H3BrO6
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| Molar Mass | 347.07 |
| Density | 2.090±0.06 g/cm3(Predicted) |
| Melting Point | 360 °C |
| Boling Point | 666.0±50.0 °C(Predicted) |
846-20-8 - Upstream Downstream Industry
| Raw Materials | 1,4,5,8-Naphthalenetetracarboxylic dianhydride
4,5,9,10-Tetrabromoisochromeno[6,5,4-def]isochromene-1,3,6,8- tetraone
4,9-DibroMoisochroMeno[6,5,4-def]isochroMene-1,3,6,8-tetraone
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846-20-8 - Introduction
2-bromo-1,4,5, acid dianhydride is an organic compound with the chemical formula C16H4Br2O6. The following is an introduction to its nature, use, preparation and safety information:
Nature:
-Appearance: A yellow to orange crystalline or powdery solid.
-Melting point: About 250-260 degrees Celsius.
-Solubility: insoluble in common organic solvents, but soluble in concentrated sulfuric acid and concentrated nitric acid.
-Chemical properties: It is an anhydride compound with the properties of an anhydride.
Use:
-2-bbmo-1, 4,5, acid dianhydde can be used as an intermediate in organic synthesis, and is commonly used in the synthesis of polymer materials, polymers and drug molecules with fluorescent properties.
-It can also be used to prepare functional materials and dyes.
Method:
-2-bro-1, 4,5, acid dianhydde can be obtained by reacting 2-bromonaphthalene-1, 4,5, 8-tetracarboxylic acid with thionyl chloride (SOCl2). First, 2-bromonaphthalene-1, 4,5, 8-tetracarboxylic acid and thionyl chloride are heated in a stream of carbon dioxide under an inert atmosphere, and then purified by extraction and crystallization in distilled water.
Safety Information:
- 2-bromo-1,4,5, acid dianhydde's specific hazards and safety precautions may vary due to the regulations of different countries, so before using or handling the compound, the relevant safety data sheet (SDS) should be read carefully or the relevant professional should be consulted.
-It may be irritating to the eyes, skin and respiratory tract, so personal protective equipment such as goggles, gloves and dust masks should be worn during operation.
-During storage and handling, avoid contact with strong oxidants and high temperatures to prevent explosions or dangerous accidents.
Last Update：2024-04-09 21:01:54