Description

trans-Bixin CAS NO 39937-23-0 is a major carotenoid pigment and the primary coloring component derived from the seeds of the annatto tree (*Bixa orellana*). This compound is highly valued for its potent, stable orange-red color and its natural origin, making it a preferred alternative to synthetic dyes. It is essential for manufacturers in the food, cosmetics, and nutraceutical industries seeking natural, compliant, and effective coloring solutions.

Application

• Natural Food Colorant: Used extensively to impart yellow to orange-red hues in dairy products (cheese, butter, ice cream), baked goods, confectionery, snacks, and beverages.
• Cosmetics & Personal Care: Employed as a safe, natural pigment in lipsticks, blushes, eyeshadows, soaps, and other color cosmetics.
• Nutraceuticals & Dietary Supplements: Incorporated into capsules, tablets, and soft gels for its color and potential antioxidant properties.
• Pharmaceuticals: Used as a natural excipient for coloring coatings on tablets and capsules.
• Industrial Applications: Functions as a natural dye for textiles, leather, and other materials.
• Animal Feed: Added to poultry feed to enhance the yellow color of egg yolks and chicken skin.

Basic Information

Product Name	trans-Bixin
CAS No.	39937-23-0
Molecular Formula	C25H30O4
Molecular Weight	394.50 g/mol
Synonyms	trans-Bixin; Natural Orange 4; CI 75120; Annatto extract (principal component); Bixin (principal coloring matter); (all-E)-Bixin; 6'-Methyl hydrogen 9'-cis-6,6'-diapocarotene-6,6'-dioate; 9'-cis-6,6'-Diapocarotene-6,6'-dioic acid, 6'-methyl ester
EINECS	254-698-9

Quality Control

Our trans-Bixin is produced and tested to meet stringent quality standards suitable for food, cosmetic, and nutraceutical applications. We ensure compliance with relevant global regulations, including FCC (Food Chemicals Codex), EU specifications for food additives (E 160b), and JECFA (Joint FAO/WHO Expert Committee on Food Additives) guidelines. A comprehensive Certificate of Analysis (COA) detailing purity, identity, and safety parameters is provided with every batch.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry place at a controlled room temperature (15-25°C). This product is easily oxidized and should be stored under an inert atmosphere (e.g., nitrogen) for long-term stability. Keep away from strong oxidizing agents.

Specification

Item	Specification
Appearance	Reddish-brown to orange crystalline powder
Identification (HPLC/UV-Vis)	Complies
Assay (HPLC, trans-Bixin)	≥ 95.0%
Loss on Drying	≤ 2.0%
Residue on Ignition (Sulfated Ash)	≤ 1.0%
Heavy Metals (as Pb)	≤ 10 ppm
Arsenic (As)	≤ 3 ppm
Solvent Residues	Complies with ICH Q3C
Microbiological Analysis	Complies with USP/EP

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