Description

Ethyl Red CAS NO 76058-33-8 is a synthetic azo dye belonging to the class of pH indicators and biological stains. This compound is valued for its distinct colorimetric properties, which are essential for precise analytical and diagnostic procedures. It is primarily required by research laboratories, diagnostic kit manufacturers, and industrial quality control units for applications in histology, microbiology, and as a pH indicator in various chemical processes.

Application

• As a pH indicator in microbiological culture media and titration experiments.
• Biological staining agent for histological samples in microscopy.
• Component in diagnostic kits and test strips for clinical and research use.
• Use as a colorimetric reagent in analytical chemistry for endpoint detection.
• Vital dye in cell viability and cytotoxicity assays.
• Industrial dye for non-textile applications such as inks and coatings where specific color properties are needed.

Basic Information

Product Name	Ethyl Red
CAS No.	76058-33-8
Molecular Formula	C17H20N3O3
Molecular Weight	314.36 g/mol
Synonyms	Ethyl Red; C.I. 45220; 2-[4-(Diethylamino)phenyl]diazenyl]benzoic Acid; N,N-Diethyl-4-[(2-carboxyphenyl)diazenyl]aniline; Ethyl Red Indicator; Acid Red 26 (related class); Azo Dye Ethyl Red; Biological Stain Ethyl Red
EINECS	Contact for details

Quality Control

Our Ethyl Red is produced under stringent quality management systems to ensure batch-to-batch consistency and reliability. Each lot undergoes comprehensive analytical testing, including purity assay by HPLC, identity confirmation (IR), and checks for residual solvents and heavy metals. Certificates of Analysis (COA) detailing all specifications are available upon request to support your quality assurance protocols.

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 heat sources and incompatible materials.

Specification

Item	Specification
Appearance	Red to dark red powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Loss on Drying	≤ 1.0%
Residue on Ignition	≤ 0.5%
Heavy Metals (as Pb)	≤ 20 ppm
pH (Saturated Solution)	Contact for details
Solubility	Soluble in ethanol, acetone; slightly soluble in water

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