Resorcine blue(CAS: 87495-30-5)

Resorcine blue (CAS: 87495-30-5) is a highly colored, water-soluble anionic dye. It has a molecular weight of approximately 564.58 g/mol. Physically, it is available as a fine crystalline powder. Chemically, it is stable in acidic solutions but decomposes in alkaline conditions. It shows good solubility in water and is less soluble in organic solvents. It exhibits strong reactivity towards basic substances and can be used in pH indicators and dyeing applications.

Resorcine blue (CAS: 87495-30-5) is typically synthesized by the coupling of resorcinol with a diazonium salt. The process involves treating resorcinol with nitrous acid in the presence of an appropriate coupling agent to form the diazonium salt. Subsequently, this salt is coupled with a suitable aromatic amine to yield the desired blue dye. This method provides good yield and selectivity, although careful control of pH and temperature is necessary to achieve optimal results.

Resorcine blue (CAS: 87495-30-5) is predominantly used in the pharmaceutical, textile, and analytical chemistry industries. It serves as a pH indicator, dyeing agent, and can be employed in the development of sensors and colloidal systems. Its ability to change color in response to changes in pH makes it valuable in research and quality control applications.

When handling Resorcine blue (CAS: 87495-30-5), it is important to wear appropriate personal protective equipment (PPE) such as gloves, goggles, and a lab coat to protect against skin and eye contact. Ensure the work area is well-ventilated to avoid inhalation. If a spill occurs, it should be immediately contained and cleaned using appropriate methods, and the area should be thoroughly rinsed. Always refer to the Safety Data Sheet (SDS) for detailed guidance on handling and storage to ensure safety in laboratory operations.