Description

C.I. Direct Orange 118 is a high-performance, water-soluble azo dye belonging to the direct dye class, known for its excellent substantivity to cellulosic fibers. Its primary value lies in providing a bright, strong orange hue with good light and wash fastness properties, making it a reliable choice for demanding coloration processes. This dye is essential for manufacturers in the textile industry seeking efficient and consistent coloring for cotton, viscose, and other regenerated cellulose materials.

Application

• Textile Dyeing: Primary application for exhaust and continuous dyeing of cotton, rayon, and other cellulosic fabrics.
• Paper Coloring: Used for tinting and dyeing paper products where good water-fastness is required.
• Leather Finishing: Employed in the dyeing of leather goods to achieve vibrant orange shades.
• Ink Formulation: A component in the manufacture of certain types of inks, particularly for specialty applications.
• Biological Staining: Potential use as a histological stain in laboratory settings.

Basic Information

Product Name	C.I. Direct Orange 118
CAS No.	60202-34-8
Molecular Formula	C32H20N6Na4O16S4
Molecular Weight	1084.86 g/mol
Synonyms	Direct Orange 118; C.I. 29173; Direct Fast Orange S; Direct Orange S; Direct Orange SE; Direct Orange 5R; Dinamine Orange SE; Pontamine Orange SE; Solamine Orange SE; Sirius Orange S
EINECS	262-138-9

Quality Control

Our production of C.I. Direct Orange 118 adheres to stringent quality management protocols to ensure batch-to-batch consistency and performance reliability. Each lot is tested against key parameters including color strength, shade, solubility, and fastness properties. Certificates of Analysis (COA) documenting purity, physical properties, and application performance are available upon request 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). Keep away from incompatible materials. The product is light-sensitive and should be stored away from direct light exposure to maintain stability.

Specification

Item	Specification
Appearance	Orange to reddish-brown powder
Identification (IR)	Conforms to standard
Color Strength	100 ± 3% (vs. Standard)
Shade	Conforms to standard
Moisture Content	≤ 5.0%
Water Insoluble Matter	≤ 0.5%
Solubility in Water	Conforms
Fastness to Light	≥ 5 (Standard depth)
Fastness to Washing	≥ 4

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