Description

Mordant Orange 3 is a synthetic azo dye primarily used as a complexometric indicator and a mordant dye for textiles. Its value lies in its ability to form stable, colored complexes with metal ions, providing consistent and reliable results in analytical chemistry and dyeing processes. This product is essential for industries such as textile manufacturing, analytical laboratories, and research institutions requiring precise colorimetric analysis or metal-sensitive dye applications.

Application

• Primary use as a complexometric indicator in the titration of metal ions like aluminum, iron, and zirconium.
• Application as a mordant dye for wool, silk, and nylon, where it forms insoluble colored lakes with metal salts like chromium or aluminum.
• Use in histological staining and biological research for specific tissue or cellular component identification.
• Employed in the manufacture of inks and pigments where metal complexation is required for color stability.
• Potential use in the coloration of leather and other protein-based materials.
• Utilized as a research chemical in the study of azo dye chemistry and metal-ligand interactions.

Basic Information

Product Name	Mordant Orange 3
CAS No.	6359-86-0
Molecular Formula	C₁₃H₉N₃Na₂O₈S₂
Molecular Weight	445.33 g/mol
Synonyms	Acid Chrome Orange G; C.I. Mordant Orange 3; C.I. 18810; Alizarin Yellow GG; Chrome Orange G; Mordant Orange G; Sodium 5-[(2,4-dihydroxyphenyl)azo]-2-hydroxybenzenesulfonate; 5-[(2,4-Dihydroxyphenyl)azo]-2-hydroxybenzenesulfonic Acid Sodium Salt
EINECS	228-777-1

Quality Control

Our Mordant Orange 3 is manufactured under a stringent quality management system. Each batch undergoes comprehensive analytical testing, including identification, purity assay, and impurity profiling, to ensure it meets the high standards required for industrial and laboratory use. A Certificate of Analysis (COA) detailing specific test results is provided with every shipment to guarantee traceability and compliance with your specifications.

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). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept tightly sealed when not in use to prevent absorption of atmospheric moisture, which can affect product performance.

Specification

Item	Specification
Appearance	Orange to brownish-orange powder
Identification (IR)	Conforms to structure
Assay (HPLC)	Min. 95%
Loss on Drying	Max. 5.0%
Water Solubility	Freely soluble
Heavy Metals (as Pb)	Max. 20 ppm
pH (1% Solution)	6.0 - 8.0

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