Description

Food Yellow 4:1 is a high-purity, aluminum lake pigment derived from the synthetic colorant Tartrazine. This compound is specifically engineered for enhanced stability and opacity in demanding applications where the water-soluble form is unsuitable. It serves as a critical ingredient for manufacturers in the food, pharmaceutical, and cosmetic industries seeking to provide consistent, vibrant yellow coloration. Its primary value lies in delivering reliable, batch-to-batch color uniformity while meeting stringent global regulatory standards for safety.

Application

• Food Coloring: Used in coated confectionery (like dragées and pan-coated tablets), bakery decorations, compound coatings, and dry powder drink mixes where water migration is a concern.
• Pharmaceuticals: Employed in the coating of tablets and capsules to provide color coding, brand identification, and UV light protection for light-sensitive active ingredients.
• Cosmetics & Personal Care: A key pigment in pressed powders, eye shadows, lipsticks, and soaps, offering excellent dispersion in anhydrous systems.
• Industrial Applications: Suitable for coloring plastics, masterbatches, and certain types of inks where a non-migrating, heat-stable pigment is required.

Basic Information

Product Name	Food Yellow 4:1
CAS No.	12225-21-7
Molecular Formula	C16H9AlN4O9S2
Molecular Weight	508.33 g/mol
Synonyms	Tartrazine Aluminum Lake; FD&C Yellow 5 Aluminum Lake; CI 19140:1; E102 Al Lake; Acid Yellow 23 Aluminum Lake; Food Yellow 4 Aluminum Lake; Aluminium Lake of Tartrazine; INS 102(i)
EINECS	Contact for details

Quality Control

Our Food Yellow 4:1 is manufactured under strict quality management systems to ensure it meets the specifications for food, pharmaceutical, and cosmetic use. Each batch is tested against rigorous internal standards, which typically include parameters for identity, purity, and heavy metal content. Certificates of Analysis (COA) confirming compliance with relevant standards such as FCC, EU, and JECFA are available upon request.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at a controlled room temperature (15-25°C). Keep the container tightly sealed when not in use to protect from moisture.

Specification

Item	Specification
Identification (IR)	Conforms
Assay (Color Strength)	95.0 - 105.0%
Loss on Drying	≤ 30.0%
Water-soluble Chlorides and Sulfates	≤ 2.0%
Subsidiary Colors	≤ 1.0%
Ether Extractables	≤ 0.2%
Arsenic (As)	≤ 3 mg/kg
Lead (Pb)	≤ 10 mg/kg

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.