Resorcine blue | CAS No. 87495-30-5

Resorcine blue

Basic Information

CAS Number

87495-30-5

Molecular Formula

C12H6Br4N2O3

Molecular Weight

545.8 g/mol

AD

Basic Physical Properties

C1=C2C(=C(C(=C1Br)[O-])Br)OC3=C(C(=O)C(=CC3=N2)Br)Br.[NH4+]

InChI

InChI=1S/C12H3Br4NO3.H3N/c13-3-1-5-11(7(15)9(3)18)20-12-6(17-5)2-4(14)10(19)8(12)16;/h1-2,18H;1H3

InChIKey

FSPQQBZXXZWDPJ-UHFFFAOYSA-N

Complexity

528

Synonyms & References

English

  • 3H-Phenoxazin-3-one, 2,4,6,8-tetrabromo-7-hydroxy-, ammoniate (1:1)
  • Lacmoid (C.I. 51400)
  • CCRIS 4866
  • Iris blue B
  • JC2JW3B998
  • ammonium 2,4,6,8-tetrabromo-7-oxophenoxazin-3-olate
  • 1787-53-7
  • Resorcine Blue (acid dye)
  • azanium;2,4,6,8-tetrabromo-7-oxophenoxazin-3-olate
  • MFCD00152579
  • Lackmoid
  • 3H-Phenoxazin-3-one,2,4,6,8-tetrabromo-7-hydroxy-,ammoniate(1:1)
  • 87495-30-5
  • UNII-JC2JW3B998
  • Resorcine blue
  • 3H-Phenoxazin-3-one, 2,4,6,8-tetrabromo-7-hydroxy-, ammonium salt
  • resorcine blue
  • RESORCINOL BLUE

FAQ

What are the physical and chemical properties of 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.

How is Resorcine blue (CAS: 87495-30-5) typically synthesized?

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.

What industries use Resorcine blue (CAS: 87495-30-5)?

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.

What precautions should be taken when handling Resorcine blue (CAS: 87495-30-5)?

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.

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