Product Core Data
Copper(I) bromide (CuBr), CAS 7787-70-4, Mw 143.45, appears as a white to off-white crystalline powder that slowly turns green on exposure to air. Its high surface area and variable oxidation state deliver excellent catalytic activity and ligand-free selectivity, making CuBr a widely used copper(I) salt in organic synthesis and materials science.
Specifications & Quality Control
We supply ≥99.0 % purity (iodometric titration) manufactured under inert atmosphere with strict moisture and oxygen control. Low Cu(II) and alkali-metal impurities are guaranteed; every batch is titrated and delivered with a COA for reliable scale-up from gram to multi-ton quantities.
Key Applications
Catalysis: Ullmann C–N/C–O/C–S couplings, Sandmeyer transformations, click chemistry
Pharmaceutical intermediates: synthesis of antibiotics, antitumour agents, heterocyclic APIs
Agrochemicals: catalyst for manufacture of brominated insecticides and fungicides
Organic synthesis: atom-transfer radical addition (ATRA) and ATRP initiator systems
Electronic materials: precursor for conductive CuBr thin films and quantum-dot surfaces
R&D: routine catalyst in academic and industrial laboratories
Use, Storage & Safety
Handle under an inert atmosphere; avoid any contact with air. Store tightly sealed with inert-gas padding in a cool, dry place. Operators must wear protective gloves, a dust mask and other appropriate PPE; do not inhale dust. The product is harmful to aquatic environments—always consult the MSDS before use.
Packaging, Logistics & Technical Services
We offer flexible packaging solutions: industrial-grade products in 25kg drums,and 100g-500g reagent-grade containers, with custom repackaging available on request. Each shipment is accompanied by a Certificate of Analysis (COA) and Material Safety Data Sheet (MSDS), and third-party test reports can be provided on request. A dedicated technical team stands ready to provide you with product applications and technical support.
Why Do Global Customers Choose Longshen Chemical?
Focus & Proven Expertise
Founded in 1991, Longshen Chemical has spent more than three decades focusing on the R&D, manufacture and global sales of brominated & chlorinated alkanes, hydroxy-esters, aromatic hydrocarbons and other fine-chemical intermediates. We are one of China’s largest development and production hubs for organo-bromine derivatives, and our deep-rooted process know-how is the most solid guarantee of consistent, high-quality products.
Capacity & Strategic Footprint
Headquartered in Yancheng, Jiangsu, we launched a wholly-owned subsidiary—Hebi Higer Longshen New Materials Co.,Ltd—in Hebi, Henan in 2024 to meet growing global demand and reinforce supply-chain resilience. The new, state-of-the-art site covers 284600 square meters with a total investment of RMB 1 billion. Upon full commissioning, group-wide annual capacity will exceed 50 000 t, dramatically boosting our ability to deliver high-end intermediates on time. The plant is designed as a world-class “smart + green” fine-chemical platform.
International-Standard Quality Systems
Longshen strictly maintains ISO 9001:2015 and ISO 14001:2015 certifications, has passed the SEDEX (SMETA) social-responsibility audit, and has successfully completed EU REACH registrations for key products. Our QC center is equipped with GC, KF titrators, UV spectrophotometers and other advanced instruments, enabling full QA/QC traceability from raw-material intake to finished-product release.
Global Recognition & Partnerships
Our products and services are trusted worldwide, with stable exports to Europe, North America, Japan, Korea, Taiwan, India and Southeast Asia. We have long-term strategic agreements with major international pharmaceutical and chemical groups. We regard every order as the beginning of a lasting responsibility.
Our Commitment
Yancheng Longshen Chemical Ltd. supplies more than molecules—we deliver reliable quality, competitive pricing, fast logistics and technical support. We aim to be your dependable, long-term strategic partner in fine-chemical intermediates. Welcome to inquire and cooperate with us.
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