Description

Erythrosin B is a synthetic, water-soluble xanthene dye widely recognized for its vibrant pink to red color. This high-purity colorant is valued for its stability and strong tinctorial strength, making it a critical component in applications requiring reliable and consistent coloration. It is primarily utilized by manufacturers in the food, pharmaceutical, cosmetic, and industrial sectors seeking a safe and effective dye for their products.

Application

• Food Coloring: Used as a certified color additive (E127) in various food products, including candies, baked goods, and cherry products.
• Pharmaceuticals: Employed as a colorant in tablets, capsules, and liquid medications for product identification and branding.
• Cosmetics & Personal Care: A key ingredient in lipsticks, blushes, soaps, and bath products to provide a stable pink or red hue.
• Biological Staining: Used in microscopy and histology as a counterstain, particularly in Gram staining procedures.
• Industrial Applications: Functions as a dye for inks, textiles, paper, and plastics where a vivid red color is desired.
• Diagnostic Reagents: Incorporated into certain clinical and laboratory reagents as a color indicator.

Basic Information

Product Name	Erythrosin B
CAS No.	49746-10-3
Molecular Formula	C20H6I4Na2O5
Molecular Weight	879.86 g/mol
Synonyms	Acid Red 51; C.I. 45430; FD&C Red No. 3; E127; Food Red 14; Tetraiodofluorescein Sodium Salt; 2',4',5',7'-Tetraiodo-3',6'-dihydroxyspiro[isobenzofuran-1(3H),9'-[9H]xanthen]-3-one disodium salt
EINECS	256-474-7

Quality Control

Our Erythrosin B is manufactured under strict quality management systems to ensure batch-to-batch consistency and reliability. We offer grades compliant with relevant standards such as FCC (Food Chemicals Codex) for food applications and pharmaceutical-grade specifications. Comprehensive quality testing is performed, including assay, heavy metals, and identification. A Certificate of Analysis (COA) is provided with each shipment to guarantee product integrity.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (15-25°C). Keep away from incompatible materials and moisture.

Specification

Item	Specification
Appearance	Red to brownish-red powder
Identification (IR)	Conforms
Assay (HPLC)	≥ 85.0%
Loss on Drying	≤ 15.0 %
Water-insoluble matter	≤ 0.2 %
Heavy Metals (as Pb)	≤ 20 ppm
Iodine (as I)	56.0 - 60.0 %
Subsidiary Colors	Conforms
Organic Volatile Impurities	Conforms

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