Product Information
Name:Pigment Red 21
Synonyms:
- 4-[(2-Chlorophenyl)azo]-3-hydroxy-N-phenyl-2-naphthalenecarboxamide
Brand:Biosynth
Description:Pigment Red 21 is a primary amine that has a liquid crystal composition. It is used as a pigment in paints and plastics, and can be found in deionized water. Pigment Red 21 has a diameter of 10 nm and the structural formula C12H17N3O5. It is an inorganic pigment with chelate ligand functional groups. Pigment Red 21 is also known as Scarlet, FD&C Red No.21, or E120. This pigment absorbs radiation from the electromagnetic spectrum and converts it to heat energy, which causes its color change from red to orange when heated above its melting point of about 250 degrees Celsius. The thermal expansion coefficient for this product is approximately 4x10^-6/K at 25 degrees Celsius.
Notice:Our products are intended for lab use only. For any other use, please contact us.
Chemical properties
Molecular weight:401.84 g/mol
Formula:C23H16ClN3O2
Purity:Min. 95%
Color/Form:Powder
InChI:InChI=1S/C23H16ClN3O2/c24-19-12-6-7-13-20(19)26-27-21-17-11-5-4-8-15(17)14-18(22(21)28)23(29)25-16-9-2-1-3-10-16/h1-14,28H,(H,25,29)/b27-26+
InChI key:InChIKey=XNANGTRPTFPPPE-CYYJNZCTSA-N
SMILES:O=C(Nc1ccccc1)c1cc2ccccc2c(/N=N/c2ccccc2Cl)c1O