Description

1,5-Naphthalenedisulfonic acid, 2-8-4-3-2-(ethenylsulfonyl)ethylaminocarbonylphenylamino-6-fluoro-1,3,5-triazin-2-ylamino-1-hydroxy-3,6-disulfo-2-naphthalenylazo-, tetrasodium salt is a high-performance, reactive dye intermediate of significant industrial importance. This complex, multifunctional molecule is engineered to provide superior color fastness and covalent bonding properties in demanding applications. It is a critical component for manufacturers in the textile, leather, and specialty paper industries seeking to produce vibrant, durable, and wash-resistant coloration.

Application

• Reactive Dye Synthesis: Primary intermediate for manufacturing high-grade fiber-reactive dyes, particularly for cotton, viscose, and other cellulosic fibers.
• Textile Coloration: Used in the production of dyes that offer excellent wash, light, and perspiration fastness on textiles.
• Leather Finishing: Key component in dyes for leather, providing deep, uniform shades with good adhesion and resistance.
• Paper Dyeing: Employed in the coloration of specialty papers where high color value and stability are required.
• Ink Formulation: Can be utilized in the synthesis of pigments for certain high-performance inks.
• Research & Development: Serves as a valuable building block in chemical research for developing new chromophores and functional dyes.

Basic Information

Product Name	1,5-Naphthalenedisulfonic acid, 2-8-4-3-2-(ethenylsulfonyl)ethylaminocarbonylphenylamino-6-fluoro-1,3,5-triazin-2-ylamino-1-hydroxy-3,6-disulfo-2-naphthalenylazo-, tetrasodium salt
CAS No.	116912-36-8
Molecular Formula	Contact for details
Molecular Weight	Contact for details
Synonyms	C.I. Reactive Red 250; Reactive Red 250; Tetrasodium 6-fluoro-3-[[4-[[2-(vinylsulfonyl)ethyl]carbamoyl]phenyl]amino]-2-[[8-[(4,6-difluoro-1,3,5-triazin-2-yl)amino]-1-hydroxy-3,6-disulfo-2-naphthyl]azo]-1,5-naphthalenedisulfonate; C.I. 18215; Reactive Dye Intermediate RR250; 2-Naphthalenesulfonic acid, 6-[[4-[[2-[(ethenylsulfonyl)ethyl]amino]carbonyl]phenyl]amino]-1-hydroxy-3-[[8-[(4,6-difluoro-1,3,5-triazin-2-yl)amino]-1-hydroxy-3,6-disulfo-2-naphthalenyl]azo]-, sodium salt (1:?); Reactive Red 250 tetrasodium salt
EINECS	Contact for details

Quality Control

Our production of this reactive dye intermediate adheres to strict quality management protocols to ensure batch-to-batch consistency and performance reliability. Every lot is analyzed using advanced techniques like HPLC to confirm critical parameters such as purity, reactive group content, and impurity profile. Certificates of Analysis (COA) documenting these specifications are provided with each shipment to support your quality assurance processes.

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 product is hygroscopic (moisture-sensitive); the container must be kept tightly sealed to prevent absorption of atmospheric moisture, which can affect performance. Keep away from incompatible materials.

Specification

Item	Specification
Appearance	Dark powder or granules
Identification (HPLC/IR)	Conforms to standard
Assay (HPLC)	≥ 85% (Typical 88-92%)
Moisture Content	≤ 5.0%
Water Solubility	Conforms
Reactive Group Content	Contact for details
Heavy Metals (as Pb)	≤ 50 ppm

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