Product Parameters
1-Bromobutane (n-Butyl bromide) CAS 109-65-9, C₄H₉Br, Mᵣ 137.02, is a colourless to slight yellow clear liquid and the benchmark medium-chain alkyl bromide for industrial synthesis. Its high electrophilic reactivity and favourable cost-to-performance ratio make it the reagent of choice for n-butylation protocols and for the on-demand generation of n-butylmagnesium bromide, positioning the material as an indispensable building block in modern organic chemistry.
Specifications & Quality Control
We supply 1-Bromobutane in two purity tiers: high-purity grade: ≥99.0 % and pharma grade ≥99.5 % (both by GC)—each produced through tightly controlled fractional distillation and in-process analytics. The material is specified for ultra-low colour, moisture ≤0.05 %, free acid and individual GC-monitored impurities, making it ideal for water- and impurity-sensitive reactions such as Grignard chemistry. This rigorous specification delivers consistently high yields and product purity, while proven batch-to-batch reproducibility guarantees stable performance and seamless scale-up from laboratory to multi-ton campaigns.
Main Applications
1-Bromobutane is a versatile, high-value intermediate.
Grignard Chemistry:
The premier feed-stock for n-butylmagnesium bromide (n-BuMgBr) generation, enabling reliable, high-yield C–C bond formation on scales from gram to multi-ton.
Pharmaceutical & Agrochemical Synthesis:
Used as a regioselective n-butylating agent in the construction of NSAIDs, antivirals, crop-protection actives and their advanced intermediates.
Fine Chemicals, Flavours & Fragrances:
Employed in the manufacture of azo-dyes, lactone-based fruit fragrances, and as a modifier/initiator for controlled radical polymerisations.
Organic Synthesis & R&D:
Routinely adopted by universities, CROs and corporate discovery centres for diverse alkylation protocols, including enolate, enamine and transition-metal-catalysed couplings.
Use, Storage & Safety Guidelines
Handle only in well-ventilated areas. For moisture- and oxygen-sensitive reactions such as Grignard formations, maintain a strict inert atmosphere and verify that the reagent is dry. Store in tightly sealed, light-resistant containers under cool, dry conditions. Operators must wear chemically resistant gloves, goggles, and impervious clothing; prevent inhalation of vapours and avoid contact with skin or eyes. Consult and follow the latest revision of the MSDS supplied with each shipment for comprehensive handling, first-aid, and transport procedures before use.
Packaging, Logistics & Technical Services
We offer flexible packaging solutions: industrial-grade products in 250 kg drums, plus laboratory sizes of 100 ml and 500 ml reagent bottles. 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-support team is available for application advice, process optimization, and any other assistance you may need.
Why Do Global Customers Choose Longshen Chemical?
Focus & Proven Expertise
Founded in 1991, Longshen Chemical has spent more than three decades dedicated to 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 and at scale. 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 responsive 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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