Erioglaucine disodium salt CAS： 3844-45-9
Erioglaucine Disodium Salt (CAS: 3844-45-9)
Vivid Blue Coloration
Delivers an intense, uniform blue shade, ideally suited for food and beverage applications demanding vibrant color presentation.
High Water Solubility
Exhibits excellent solubility in water, ensuring broad functional adaptability across both liquid and solid formulation systems.
Notable Stability
Demonstrates strong resistance to light and heat, particularly under neutral to alkaline conditions, allowing the colorant to maintain color integrity throughout standard processing and storage.
Broad Regulatory Acceptance
Holds approvals from major international regulatory authorities and is widely employed across the food, beverage, and pharmaceutical sectors worldwide.
Product Overview
Erioglaucine disodium salt, widely referred to as Brilliant Blue FCF or FD&C Blue No. 1, is a synthetic triarylmethane dye classified among acid blue colorants. It ranks among the most extensively utilized blue colorants worldwide, functioning as a food additive (E133), pharmaceutical excipient, cosmetic pigment, and a significant biological stain.
The compound has the molecular formula C₃₇H₃₄N₂Na₂O₉S₃, with CAS number 3844-45-9 and Colour Index number 42090. It presents physically as a reddish-violet to deep purple crystalline powder or fine crystalline powder, yielding a brilliant blue solution upon dissolution in water.
As a classic and broadly applied blue dye, Erioglaucine disodium salt is prized for its vibrant color, excellent stability, and well-established safety profile, making it an essential coloring agent across the food, pharmaceutical, cosmetic, and life science research industries.
Key Features
Globally Certified Classic Blue
Recognized as FD&C Blue No. 1 and E133, it stands among the most broadly accepted blue colorants by regulatory agencies worldwide, meeting stringent standards across the food, pharmaceutical, and cosmetic sectors.
Vibrant and Stable Hue
Delivers a bright, clear greenish-blue color with maximum absorption at approximately 625–630 nm. Exhibits good resistance to light, heat, and pH variations, ensuring consistent color performance throughout the product shelf life.
High Purity and Tinctorial Strength
High-purity grades attain specific absorbance values (E¹%₁cm) of ≥1000, allowing extremely low addition levels to achieve the desired coloring effect—offering excellent cost-efficiency with negligible impact on final product characteristics.
Excellent Water Solubility
Readily dissolves in water at concentrations of 1 mg/mL or higher, enabling direct incorporation into aqueous systems such as beverages, gels, and water-based coatings.
Multifunctional Versatility
Functions both as an approved food colorant and a validated biological stain, with established uses in histology, microbiology, and life sciences research.
Customizable Specifications
Offered in multiple purity grades (Pure, Biological Stain, Food Grade) and packaging configurations to meet diverse needs ranging from R&D to industrial production.
Technical Specifications
| Parameter | Typical Value / Specification | Description & Significance |
|---|---|---|
| Molecular Formula | C₃₇H₃₄N₂Na₂O₉S₃ | Defines the chemical structure and serves as the basis for molecular weight and stoichiometric calculations. |
| Molecular Weight | Approximately 792.84–792.85 g/mol | Required for quantitative formulation and analytical work; minor inter-source variations are normal. |
| CAS Number | 3844-45-9 | Globally unique identifier for this chemical substance. |
| Color Index (C.I.) No. | 42090 | Internationally standardized classification number for industrial dye applications. |
| EINECS Number | 223-339-8 | European inventory registration number for chemical substances. |
| Appearance | Reddish-violet to deep purple crystalline powder | Visual quality indicator; expected to be uniform in color, free of lumps and foreign matter. |
| Melting Point | 283 °C (decomposes) | Characteristic physical constant; decomposition at this temperature indicates limited thermal stability under extreme heat. |
| Purity / Dye Content | Grade-dependent (Biological Stain, Pure, Food Grade) | Primary specification reflecting overall quality. Higher purity grades contain fewer impurities; Biological Stain grade enforces strict limits on specific contaminants to ensure clear staining backgrounds. |
| Maximum Absorbance (λmax) | Approximately 625–630 nm | Key spectral identifier used for qualitative confirmation and quantitative assay; deviations from this range may signal impurities or quality issues. |
| Specific Absorbance (E¹%₁cm) | ≥ 1000 (at λmax) | Absorbance of a 1% solution (1 g/100 mL) measured in a 1 cm cell. Higher values denote stronger tinctorial strength and improved cost-effectiveness. |
| Loss on Drying | ≤ 10% (105 °C) | Quantifies moisture and volatile content; essential for stability assessment and accurate weighing. |
| Solubility | Water: Soluble (≥1 mg/mL) Ethanol: Soluble Vegetable Oils: Insoluble | Governs formulation suitability. Water and ethanol solubility facilitate aqueous and hydroalcoholic systems; insolubility in oils precludes direct use in anhydrous lipid formulations. |
| Absorbance Ratio (P-15/P+15) | 1.10–1.25 | Spectral quality control parameter used to detect specific byproducts and ensure batch-to-batch color consistency. |
Delivery, Certifications & Service
Supply & Logistics
Standard pack sizes (25 g, 100 g, 1 kg) are stocked in regional warehouses for prompt fulfillment; bulk quantities (5 kg, 25 kg) require advance confirmation with the sales team. A sample program offers small volumes to research institutions and manufacturers for testing and formulation validation. Packaging is configured across multiple scales: research quantities from 5 g to 100 g are supplied in amber glass bottles, while industrial quantities of 1 kg and 5 kg are packaged in foil bags or fluorinated bottles, and 25 kg shipments use fiber drums with inner polyethylene liners. The product is classified as non-hazardous and is transported via standard freight, including express, less-than-truckload (LTL), and full truckload services.
Quality Certifications & Documentation
A Certificate of Analysis (COA) accompanies each qualified batch, documenting key parameters such as appearance, assay/dye content (by HPLC or UV-vis), λmax, loss on drying, and, where applicable, subsidiary dyes and heavy metals. A Safety Data Sheet (SDS) is provided in multiple languages, and a Product Specification (PS) detailing chemical composition, physical state, purity criteria, and storage requirements is also available. A Certificate of Origin (COO) can be provided upon request to satisfy customs and regulatory compliance. The complete documentation suite includes:
Certificate of Analysis (COA)
Safety Data Sheet (SDS/MSDS)
Technical Data Sheet (TDS)
Product Specification (PS)
Certificate of Origin (COO)
Technical Support & Custom Services
An application specialist team delivers technical consultation covering formulation assistance, dissolution guidance, and analytical method support. For long-term partnership clients, custom purity specifications and tailored packaging solutions are available. Regulatory support includes documentation packages assembled to facilitate product registration in target markets.
