Description

C.I. Acid Blue 74-Aluminum Lake is an insoluble, stable pigment derived from the water-soluble dye, Indigo Carmine. This product matters for its excellent lightfastness, chemical stability, and vibrant blue hue, making it a superior alternative to the dye in applications requiring non-bleeding color. It is primarily needed by manufacturers in the pharmaceutical, cosmetic, and food supplement industries for use in tablet coating and coloration.

Application

• Primary pharmaceutical tablet coating and coloration.
• Pigment for cosmetic products such as lipsticks, eyeshadows, and soaps.
• Colorant for dietary supplement and vitamin tablets.
• Industrial pigment for specialty inks and plastics where a non-migrating blue is required.
• Coloration of food contact materials and packaging, where regulations permit.

Basic Information

Product Name	C.I. Acid Blue 74-Aluminum Lake
CAS No.	53026-58-7
Molecular Formula	C16H8N2Na2O8S2 · xAl
Molecular Weight	466.36 (for acid dye base) + Aluminum Lake component
Synonyms	FD&C Blue No. 2 Aluminum Lake; Indigo Carmine Aluminum Lake; CI 73015 Aluminum Lake; Acid Blue 74 Aluminum Lake; E132 Aluminum Lake; Disodium 3,3'-dioxo-[delta2,2'-biindoline]-5,5'-disulfonate Aluminum Lake; Blue Indigo Lake; Food Blue 1 Aluminum Lake
EINECS	Contact for details

Quality Control

Our C.I. Acid Blue 74-Aluminum Lake is manufactured under strict quality systems. Each batch is tested to ensure it meets stringent specifications for identity, purity, and heavy metal content, aligning with standards relevant for its intended use. A comprehensive Certificate of Analysis (COA) detailing assay, loss on drying, and specific impurity limits is provided with every shipment.

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 away from incompatible materials.

Specification

Item	Specification
Description	Fine blue powder
Identification (IR)	Conforms to standard
Assay (Color Strength)	95.0% - 105.0%
Loss on Drying	≤ 5.0%
Arsenic (As)	≤ 3 ppm
Lead (Pb)	≤ 10 ppm
Heavy Metals (as Pb)	≤ 20 ppm
Aluminum Content	Contact for details

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