Description

Janus Black CAS NO 4443-99-6 is a high-purity chemical compound widely recognized for its specialized functional properties. This product is essential for applications requiring precise chemical performance and consistent quality. It is primarily utilized in advanced manufacturing and research sectors, including the pharmaceutical, agrochemical, and specialty materials industries.

Application

• As a key intermediate in the synthesis of active pharmaceutical ingredients (APIs) and fine chemicals.
• Utilized in the research and development of novel agrochemical formulations.
• Acts as a functional component in the production of dyes, pigments, and specialty colorants.
• Employed as a reagent or building block in advanced material science, including polymer and coating technologies.
• Serves as a standard or reference material in analytical chemistry and quality control laboratories.
• Used in the development of photographic and imaging chemicals.

Basic Information

Item	Detail
Product Name	Janus Black
CAS No.	4443-99-6
Molecular Formula	C16H18N8Na2O11S2
Molecular Weight	624.45 g/mol
Synonyms	Janus Black B; Acid Black 131; C.I. 15711; 2,7-Naphthalenedisulfonic acid, 4-amino-5-hydroxy-3-[(4-nitrophenyl)azo]-6-(phenylazo)-, disodium salt; Disodium 4-amino-5-hydroxy-3-[(4-nitrophenyl)azo]-6-(phenylazo)naphthalene-2,7-disulphonate; Janus Schwarz B; Amido Black 10B (related class)
EINECS	Contact for details

Quality Control

Our Janus Black is manufactured under strict quality management systems. Every batch undergoes comprehensive analytical testing to ensure it meets the highest standards for purity and consistency. A Certificate of Analysis (COA) detailing key parameters such as assay, impurity profile, and physical properties is provided with each shipment and is available upon request.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at a controlled room temperature (15-25°C). Due to its hygroscopic nature, the container must be kept tightly sealed to minimize exposure to atmospheric moisture.

Specification

Item	Specification
Appearance	Dark blue to black powder
Identification (IR)	Conforms to standard
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 5.0%
Heavy Metals (as Pb)	≤ 20 ppm
Residual Solvents (GC)	Meets ICH guidelines

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