Word Study
tartrazine
CIDE DICTIONARY
tartrazine, n. [Tartaric + hydrazine.].
An artificial dyestuff obtained as an orange-yellow powder, and regarded as a phenyl hydrazine derivative of tartaric and sulphonic acids. [1913 Webster]
OXFORD DICTIONARY
tartrazine, n. Chem. a brilliant yellow dye derived from tartaric acid and used to colour food, drugs, and cosmetics.
Etymology
as TARTAR + AZO- + -INE(4)
For further exploring for "tartrazine" in Webster Dictionary Online