1585-90-6 - Names and Identifiers
1585-90-6 - Physico-chemical Properties
Molecular Formula | C6H7NO3
|
Molar Mass | 141.12 |
Density | 1.395 |
Melting Point | 66-67 °C (lit.)67-74 °C |
Boling Point | 130°C/0.005mmHg(lit.) |
Flash Point | 138°C |
Vapor Presure | 8.27E-05mmHg at 25°C |
Appearance | Powder |
Color | white |
pKa | 14.21±0.10(Predicted) |
Storage Condition | 2-8°C |
Refractive Index | 1.56 |
1585-90-6 - Risk and Safety
Hazard Symbols | Xn - Harmful
|
Risk Codes | R22 - Harmful if swallowed
R36 - Irritating to the eyes
|
Safety Description | 26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice.
|
WGK Germany | 3 |
1585-90-6 - Introduction
1-(2-hydroxy-ethyl)-pyrrole-2,5-dione is a chemical substance with the chemical formula C6H7NO3. The following is a description of the properties, uses, preparation and safety information of the compound:
Nature:
1-(2-hydroxy-ethyl)-pyrrole-2,5-dione is a colorless to pale yellow crystalline solid. It is insoluble in water at room temperature, but soluble in ethanol and organic solvents. Its melting point is 115-116°C.
Use:
1-(2-hydroxy-ethyl)-pyrrole-2,5-dione is an important organic synthesis intermediate. It is often used as a raw material for the synthesis of polymers, particularly polyamideketone (PAAK) resins. This resin has excellent thermal stability and mechanical properties, and can be used in coatings, adhesives, plastics and textiles.
Method:
1-(2-hydroxy-ethyl)-pyrrole-2,5-dione can be obtained by reacting 2-hydroxyethylmaleimide with aldehydes under alkaline conditions. Specifically, 2-hydroxyethyl maleimide is first reacted with aldehyde (such as formaldehyde) under alkaline conditions to generate N-Hydroxyethyl aldehyde maleimide, it is then converted to 1-(2-hydroxy-ethyl)-pyrrole-2,5-dione by Ketonization under acidic conditions.
Safety Information:
1-(2-hydroxy-ethyl)-pyrrole-2,5-dione is generally less risky when used and stored correctly. However, it can be irritating to the skin and eyes. Wear appropriate protective equipment during operation to avoid direct contact with skin and eyes. Safe practices should be followed when using the compound, and waste should be stored and disposed of properly. In case of poisoning or accident, seek medical advice immediately.
Last Update:2024-04-10 22:29:15