Description

Erioglaucine (Redox Indicator) is a high-purity, triphenylmethane-based dye widely recognized for its distinct color change properties in redox titration. Its primary value lies in providing a sharp, visually discernible endpoint in analytical chemistry, ensuring accurate and reliable quantitative analysis. This indicator is essential for laboratories and quality control departments in the pharmaceutical, chemical manufacturing, and water treatment industries where precise redox potential measurement is critical.

Application

• Redox Titration Endpoint Detection: Primary application as a visual indicator in titrations involving oxidizing or reducing agents.
• Analytical Chemistry & Research: Used in laboratory settings for quantitative analysis and method development in redox reactions.
• Pharmaceutical Quality Control: Employed in the assay and purity testing of active pharmaceutical ingredients (APIs) and raw materials.
• Industrial Process Monitoring: Serves as an indicator in chemical synthesis and process control where redox potential is a key parameter.
• Educational & Teaching Laboratories: A standard reagent for demonstrating redox titration principles in academic institutions.
• Water & Environmental Analysis: Potential use in certain methods for determining chemical oxygen demand (COD) or other redox-based water quality parameters.

Basic Information

Product Name	Erioglaucine (Redox Indicator)
CAS No.	34082-76-5
Molecular Formula	C37H42N2O9S3·2Na
Molecular Weight	792.91 g/mol (as disodium salt)
Synonyms	Acid Blue 9; FD&C Blue No. 1; Brilliant Blue FCF; C.I. 42090; Erioglaucine disodium salt; D&C Blue No. 4; Food Blue 2; E 133
EINECS	251-211-3

Quality Control

Our Erioglaucine (Redox Indicator) is manufactured under a strict quality management system. Each batch undergoes comprehensive analytical testing, including identification, purity assay, and impurity profiling, to ensure it meets the stringent requirements for analytical reagent use. A detailed Certificate of Analysis (COA) is provided with every shipment, confirming compliance with our internal specifications and relevant industry standards.

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 sources of heat.

Specification

Item	Specification
Appearance	Dark blue to blue-violet powder
Identification (IR)	Conforms to standard
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 10.0 %
Absorbance (λ max)	630 - 635 nm
pH (1% Solution)	6.0 - 8.0
Heavy Metals (as Pb)	≤ 20 ppm

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