Description

Sudan II is a synthetic, oil-soluble azo dye belonging to the Sudan family of compounds. Its primary commercial value lies in its strong affinity for non-polar substances, making it an effective colorant for industrial applications. This product is essential for manufacturers and laboratories requiring a reliable, high-purity dye for specialized coloring and analytical purposes. It is commonly utilized in the plastics, wax, and petroleum industries, as well as in research and development settings.

Application

• Industrial Colorant: Used for coloring hydrocarbon-based products such as lubricating oils, greases, waxes, and polishes.
• Plastics and Polymers: Acts as a colorant for various plastics, including polystyrene and other thermoplastic materials.
• Laboratory Reagent: Employed as a biological stain in microscopy and as a dye marker in thin-layer chromatography (TLC) and other analytical techniques.
• Solvent Dye: Suitable for coloring organic solvents and fuel markers due to its excellent solubility in non-polar media.
• Research & Development: Serves as a model compound or intermediate in chemical synthesis and photochemical studies.
• Educational Use: Utilized in academic laboratories for teaching principles of organic chemistry and dye chemistry.

Basic Information

Product Name	Sudan II
CAS No.	3118-97-6
Molecular Formula	C18H16N2O
Molecular Weight	276.34 g/mol
Synonyms	Solvent Orange 7; C.I. 12140; Sudan Orange; Oil Orange; 1-[(2,4-Dimethylphenyl)azo]-2-naphthalenol; 2-Naphthol, 1-[(2,4-dimethylphenyl)azo]-; Sudan II Dye; Fat Red B
EINECS	221-499-5

Quality Control

Our Sudan II is manufactured under strict quality control protocols to ensure batch-to-batch consistency and high purity. Each lot is tested against rigorous in-house specifications, which typically include identity confirmation, assay (purity), and analysis of key impurities. A Certificate of Analysis (COA) detailing these results is provided with every shipment to guarantee product integrity and 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 heat sources and incompatible materials.

Specification

Item	Specification
Appearance	Reddish-brown to orange powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Loss on Drying	≤ 1.0%
Residue on Ignition	≤ 0.5%
Solubility	Freely soluble in organic solvents (e.g., acetone, chloroform)

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