NIR dye is 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 is used in electric, electronic, automotive, building industry, etc.Apprearance: dark green powderAbsorb max. : 887nmExt. 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: normalToluene: badEthanol: badNMP: very good