Description

Martius Yellow Sodium Salt Monohydrate is a water-soluble salt form of the classic azo dye, Martius Yellow, offering enhanced stability and handling properties for industrial applications. This compound is valued for its strong yellow coloration and specific chemical reactivity, making it a versatile intermediate and colorant. It is primarily utilized in research, analytical chemistry, and specialized manufacturing processes where precise dye properties are required.

Application

• Histological Staining: Used as a biological stain in microscopy for differentiating tissues and cellular structures.
• pH Indicator: Functions as a colorimetric pH indicator in specific analytical and laboratory procedures.
• Textile Dyeing: Serves as a colorant for dyeing natural fibers like wool and silk in specialized applications.
• Research & Development: Employed as a chemical intermediate or reference standard in synthetic organic chemistry and material science research.
• Ink Formulation: Used in the production of specialized inks, including security or artistic inks, requiring specific light-fastness or chemical properties.
• Analytical Reagent: Acts as a reagent in colorimetric assays and detection methods within analytical laboratories.

Basic Information

Product Name	Martius Yellow Sodium Salt Monohydrate
CAS No.	304655-86-5
Molecular Formula	C10H6N2Na2O6 · H2O
Molecular Weight	328.16 g/mol (Monohydrate)
Synonyms	Martius Yellow Sodium Salt; Acid Yellow 24 Sodium Salt; C.I. 10315; 2,4-Dinitro-1-naphthol Sodium Salt Monohydrate; Naphthol Yellow S Sodium Salt; Manchester Yellow; Saffron Substitute; 1-Naphthol, 2,4-dinitro-, sodium salt, monohydrate
EINECS	Contact for details

Quality Control

Our Martius Yellow Sodium Salt Monohydrate is produced and tested under a stringent quality management system to ensure batch-to-batch consistency and reliability. Each lot is analyzed for key parameters including identity, purity, and moisture content. A comprehensive Certificate of Analysis (COA) detailing all test results is provided with every shipment 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 room temperature (15-25°C). This material is hygroscopic (moisture-sensitive); ensure the container is kept tightly sealed to prevent absorption of atmospheric moisture.

Specification

Item	Specification
Appearance	Yellow to orange-yellow powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 5.0%
Water Content (Karl Fischer)	4.0% - 6.0%
Heavy Metals (as Pb)	≤ 20 ppm
Solubility (in Water)	Clear, yellow solution

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