Description

1,4-Diamino-5-Nitroanthraquinone CAS NO 82-33-7 is a specialized anthraquinone derivative distinguished by its amino and nitro functional groups. This compound is a critical high-value intermediate in the synthesis of complex dyes and pigments, prized for its ability to impart specific color properties and lightfastness. It is essential for manufacturers in the dyestuff, textile, and specialty chemical industries seeking to produce high-performance colorants.

Application

• Dye Intermediate: A key precursor for the synthesis of vat dyes, disperse dyes, and solvent dyes, particularly for shades of blue, green, and black.
• Pigment Manufacturing: Used in the production of high-performance organic pigments for plastics, coatings, and inks requiring excellent durability.
• Textile Coloration: Serves as a building block for dyes used in coloring synthetic fibers like polyester and acetate.
• Research & Development: Employed in chemical research for developing novel chromophores and functional materials.
• Specialty Chemical Synthesis: Acts as an intermediate in the synthesis of more complex anthraquinone-based chemicals for various industrial applications.

Basic Information

Product Name	1,4-Diamino-5-Nitroanthraquinone
CAS No.	82-33-7
Molecular Formula	C14H9N3O4
Molecular Weight	283.24 g/mol
Synonyms	5-Nitro-1,4-diaminoanthraquinone; 1,4-Diamino-5-nitro-9,10-anthracenedione; 1,4-Diamino-5-nitroanthracene-9,10-dione; C.I. 59825; C.I. Vat Blue 21; Vat Blue 21; 82-33-7; 1,4-Diamino-5-nitro-anthraquinone
EINECS	201-415-7

Quality Control

Our 1,4-Diamino-5-Nitroanthraquinone is produced under a stringent quality management system to ensure batch-to-batch consistency and high purity. Each lot is analyzed using advanced techniques including HPLC and spectrophotometry to verify identity, potency, and impurity profiles. A comprehensive Certificate of Analysis (COA) detailing all specifications is provided with every shipment to support your quality assurance protocols.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). This material is hygroscopic (moisture-sensitive) and light-sensitive; containers must be kept tightly sealed to minimize exposure to atmospheric moisture and light to preserve stability and quality.

Specification

Item	Specification
Appearance	Dark brown to violet crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Loss on Drying	≤ 1.0%
Heavy Metals (as Pb)	≤ 20 ppm
Residue on Ignition	≤ 0.5%

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