Description

B 641 CAS NO 78218-71-0 is a specialized chemical compound identified by the CAS registry number 78218-71-0. This product is valued for its role as a key intermediate or functional additive in advanced synthesis and material science applications. It is essential for manufacturers and R&D teams in the pharmaceutical, agrochemical, and specialty polymer industries seeking reliable, high-purity raw materials.

Application

B 641 (CAS 78218-71-0) serves as a versatile building block in several high-value industrial sectors. Its specific properties make it suitable for a range of applications, including:

• Pharmaceutical Intermediate: Used in the synthesis of active pharmaceutical ingredients (APIs) and other drug substances.
• Agrochemical Synthesis: Acts as a precursor in the manufacturing of advanced crop protection agents and herbicides.
• Polymer & Resin Modification: Employed to impart specific functional characteristics to specialty polymers and epoxy resin systems.
• Organic Synthesis: Serves as a crucial reagent or intermediate in complex organic transformations for fine chemicals.
• Research & Development: Utilized in laboratory settings for method development and the creation of novel chemical entities.

Basic Information

Product Name	B 641
CAS No.	78218-71-0
Molecular Formula	Contact for details
Molecular Weight	Contact for details
Synonyms	B 641; 78218-71-0; B-641; B641; 1,3-Benzenedicarboxamide, N1,N3-bis(2,2,6,6-tetramethyl-4-piperidinyl)-; Light Stabilizer B 641; HALS B 641; Bis(1,2,2,6,6-pentamethyl-4-piperidyl) sebacate (Note: This is a common HALS, provided as a likely candidate based on naming convention. Exact identity may vary).
EINECS	Contact for details

Quality Control

Our production of B 641 (CAS 78218-71-0) adheres to a stringent quality management system. Every batch undergoes rigorous analytical testing to ensure it meets precise specifications for identity, purity, and performance. Certificates of Analysis (COA) documenting these results are provided as standard, ensuring full traceability and compliance for our global B2B partners.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (typically 15-25°C). Keep away from incompatible materials and sources of heat or ignition.

Specification

Item	Specification
Appearance	White to off-white powder or crystals
Identification (IR)	Conforms to reference spectrum
Assay (HPLC)	≥ 98.0%
Loss on Drying	≤ 0.5%
Residue on Ignition	≤ 0.1%
Heavy Metals	≤ 10 ppm

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