Description

Bis(p-Nitrophenyl) Sulphite is an organic sulfite ester derivative of p-nitrophenol, identified by CAS No. 25887-81-4. This specialized chemical intermediate is valued for its role in synthesizing more complex molecules, particularly in fine chemical and pharmaceutical research. It is primarily sought by R&D chemists and process development scientists in the agrochemical, pharmaceutical, and specialty chemical manufacturing sectors.

Application

• Pharmaceutical Intermediate: Used in the synthesis of active pharmaceutical ingredients (APIs) and other drug candidates.
• Agrochemical Synthesis: Serves as a key building block in the production of advanced pesticides and herbicides.
• Polymer Chemistry: Acts as a modifying agent or cross-linking precursor in specialty polymer formulations.
• Dye and Pigment Manufacturing: Employed in the synthesis of complex nitro-aromatic dyes and colorants.
• Chemical Research & Development: A valuable reagent for exploring new organic reactions and catalytic processes in academic and industrial labs.
• Liquid Crystal and Electronic Materials: Potential use in the synthesis of components for advanced electronic displays and materials.

Basic Information

Item	Detail
Product Name	Bis(p-Nitrophenyl) Sulphite
CAS No.	25887-81-4
Molecular Formula	C12H8N2O7S
Molecular Weight	324.27 g/mol
Synonyms	Bis(4-nitrophenyl) sulfite; Di(4-nitrophenyl) sulfite; p-Nitrophenyl sulfite; Sulfurous Acid Bis(4-nitrophenyl) Ester; 4,4'-Dinitrodiphenyl sulfite; 1,1'-Sulfinylbis(4-nitrobenzene); Bis(4-nitrophenyl) ester of sulfurous acid
EINECS	Contact for details

Quality Control

Our Bis(p-Nitrophenyl) Sulphite is produced under a strict quality management system. Each batch undergoes comprehensive analytical testing, including HPLC for purity and identity confirmation, to ensure it meets the high standards required for research and industrial synthesis. A Certificate of Analysis (COA) detailing all test results is provided with every shipment.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at a controlled room temperature (15-25°C). This material is light-sensitive and easily oxidized; for long-term storage, consider maintaining under an inert atmosphere such as nitrogen or argon to preserve stability and purity.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Melting Point	Contact for details
Loss on Drying	≤ 0.5%
Residue on Ignition	≤ 0.1%
Related Substances (HPLC)	Individual impurity ≤ 0.5%; Total impurities ≤ 2.0%

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