Description

Trisodium 2-[[4,5-Dihydro-3-Methyl-5-Oxo-1-[4-[[2-(Sulphonatooxy)Ethyl]Sulphonyl]Phenyl]-1H-Pyrazol-4-Yl]Azo]Naphthalene-1,5-Disulphonate is a high-purity, water-soluble anionic dye belonging to the class of reactive or acid dyes, known for its excellent color strength and stability. This compound matters for its ability to form strong covalent bonds with substrates like textiles, providing superior wash and light fastness properties essential for durable coloration. It is primarily needed by manufacturers in the textile, leather, and specialty ink industries seeking reliable and vibrant coloring agents for synthetic and natural fibers.

Application

• Textile Dyeing: Primary application for dyeing nylon, wool, silk, and other protein-based fibers due to its excellent affinity and fastness.
• Leather Coloring: Used in the tanning industry for imparting consistent and deep colors to leather goods.
• Paper Coloration: Employed in the production of specialty papers requiring high color uniformity and stability.
• Ink Manufacturing: A key component in formulating inks for jet printing and other applications where water solubility and color purity are critical.
• Biological Staining: Potential use as a histological stain in laboratory settings, leveraging its specific affinity.
• Research & Development: Serves as a chemical intermediate or reference standard in synthetic chemistry and dye research.

Basic Information

Product Name	Trisodium 2-[[4,5-Dihydro-3-Methyl-5-Oxo-1-[4-[[2-(Sulphonatooxy)Ethyl]Sulphonyl]Phenyl]-1H-Pyrazol-4-Yl]Azo]Naphthalene-1,5-Disulphonate
CAS No.	20298-05-9
Molecular Formula	C24H17N4Na3O14S4
Molecular Weight	782.62 g/mol
Synonyms	Reactive Red 198; C.I. Reactive Red 198; Trisodium 6-[[4,5-dihydro-3-methyl-5-oxo-1-[4-[(2-sulfooxyethyl)sulfonyl]phenyl]-1H-pyrazol-4-yl]azo]-1,5-naphthalenedisulfonate; 1,5-Naphthalenedisulfonic acid, 6-[[4,5-dihydro-3-methyl-5-oxo-1-[4-[(2-sulfooxyethyl)sulfonyl]phenyl]-1H-pyrazol-4-yl]azo]-, trisodium salt; Reactive Red 198, trisodium salt; C.I. 18215; Lanasol Red 6G (trade name related class); Remazol Red 3BS (trade name related class)
EINECS	Contact for details

Quality Control

Our Trisodium 2-[[4,5-Dihydro-3-Methyl-5-Oxo-1-[4-[[2-(Sulphonatooxy)Ethyl]Sulphonyl]Phenyl]-1H-Pyrazol-4-Yl]Azo]Naphthalene-1,5-Disulphonate is produced under a stringent quality management system. Each batch undergoes rigorous analytical testing to ensure compliance with industry standards for dye content, purity, and performance characteristics. Certificates of Analysis (COA) detailing specific batch results are available upon request.

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 handling.

Specification

Item	Specification
Appearance	Reddish-brown to dark red powder
Identification (IR)	Conforms to structure
Assay (HPLC)	Min. 95%
Moisture Content	Max. 5.0%
Water Solubility	Completely soluble
pH (1% Solution)	6.0 - 8.0
Heavy Metals (as Pb)	Max. 20 ppm
Color Strength	Standard ± 5%

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