Description

Ammonium 2,4-Diamino-5-[(2-Hydroxy-5-Nitrophenyl)Azo]Benzenesulphonate is a specialized azo dye intermediate and analytical reagent known for its distinct chromophoric properties. This compound is critical for producing high-value, color-fast dyes and pigments, as well as serving as a precise reagent in chemical analysis. It is primarily sought by manufacturers in the dye and pigment industry, analytical laboratories, and research institutions developing advanced colorimetric sensors and indicators.

Application

• Dye and Pigment Synthesis: A key intermediate for manufacturing azo dyes, particularly for applications requiring specific shades of yellow, orange, and brown with good light and wash fastness.
• Analytical Chemistry Reagent: Used as a chromogenic agent in spectrophotometric analysis and as a complexometric indicator for the detection and quantification of specific metal ions.
• Biological Staining: Potential application in histology and cytology for staining tissue samples, leveraging its ability to bind to specific cellular components.
• Research & Development: Serves as a building block in organic synthesis and materials science research for developing novel photochromic or electrochromic materials.
• Ink Formulation: Used in the production of specialized inks for industrial marking, textiles, or security printing due to its color properties.
• pH Indicators: Can be formulated into pH indicator solutions or papers, changing color within specific pH ranges.

Basic Information

Item	Detail
Product Name	Ammonium 2,4-Diamino-5-[(2-Hydroxy-5-Nitrophenyl)Azo]Benzenesulphonate
CAS No.	94159-74-7
Molecular Formula	C18H19N7O6S
Molecular Weight	461.45 g/mol
Synonyms	Ammonium 2,4-diamino-5-[(2-hydroxy-5-nitrophenyl)diazenyl]benzenesulfonate; 5-[(2-Hydroxy-5-nitrophenyl)azo]-2,4-diaminobenzenesulfonic acid ammonium salt; C.I. 37155; Acid Yellow 36, ammonium salt; Benzenesulfonic acid, 2,4-diamino-5-[(2-hydroxy-5-nitrophenyl)azo]-, ammonium salt; Azo dye intermediate YA; 2,4-Diamino-5-[(2-hydroxy-5-nitrophenyl)azo]benzenesulfonic acid ammonium salt
EINECS	Contact for details

Quality Control

Our Ammonium 2,4-Diamino-5-[(2-Hydroxy-5-Nitrophenyl)Azo]Benzenesulphonate is produced under a strict quality management system. Every batch undergoes comprehensive analytical testing, including HPLC for purity and identity confirmation, to ensure it meets precise specifications for colorant and reagent applications. Certificates of Analysis (COA) documenting purity, heavy metal content, and other critical parameters 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 room temperature (15-25°C). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept sealed to prevent absorption of atmospheric moisture, which can affect product performance and stability.

Specification

Item	Specification
Appearance	Orange to brown powder or crystalline solid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 2.0%
Heavy Metals (as Pb)	≤ 20 ppm
Solubility	Soluble in water, slightly soluble in ethanol

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