Compound Q&A
What is Food Yellow no. 4 Aluminum Lake (CAS: 12225-21-7)?
Answer
Food Yellow no. 4 Aluminum Lake (CAS: 12225-21-7) is a food coloring agent derived from aluminum salts and tartrazine. It has a bright yellow color and is commonly used as a food dye to enhance the appearance of various food products such as beverages, confections, and baked goods.
About
CAS No
12225-21-7
English Name
Food Yellow no. 4 Aluminum Lake
Molecular Formula
C16H9AlN4O9S2
Molecular Weight
492.4 g/mol
SMILES
C1=CC(=CC=C1N=NC2C(=NN(C2=O)C3=CC=C(C=C3)S(=O)(=O)[O-])C(=O)[O-])S(=O)(=O)[O-].[Al+3]
InChIKey
KEHJATRTHJTLNR-UHFFFAOYSA-K
Last Updated: 2025-10-31 12:55
