Near Infra Red (NIR) absorbing dye


It is called "NIR dye", capable of shielding heat and allows transmittance of wave range between 400~800nm of light while absorbing wave range of 900~1200nm, which is called Near Infra Red. Due to its very precise property, only a few companies have the production technology today. It applies to electronics and makng the window tint film for automotives, building industry, etc.

NIR-dye general specification

• Apprearance: dark green powder
• Absorb max.: 887nm
• Ext. coeff.: 3,234 x 10^4L/cm.mol (in CH2CI2)
• Melting point: 286 C deg.
• moisture content: less than 0.1%
• Assay: more than 99%
• Solubility(25 c deg.):
  • MEK: normal
  • Toluene: bad
  • Ethanol: bad
  • NMP: very good
    
    
    

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