Sysem Chem: The Precise Guardian in the Brominated Hydrocarbons Field

Sysem Chem: The Precise Guardian in the Brominated Hydrocarbons Field​

Beside the gas chromatograph in the laboratory, two reagents labeled "Core Series" stand out: one is colorless bromobenzene with 99.8% purity, and the other is pale yellow 2-Bromobutane. When Dr. Lin Yanzhi founded Sysem Chem in a suburban warehouse in 1998, he identified these two brominated hydrocarbons as core products—"supporting downstream innovation with the most precise molecules."​

In the early days, a pharmaceutical company urgently needed high-purity bromobenzene for antibiotic intermediate synthesis. The mainstream market products only had 98% purity, and impurities drastically reduced reaction yield. Lin's team improved the distillation process, controlling single impurity content below 0.1% through three consecutive distillations. The final bromobenzene sample reached 99.5% purity in GC detection . When he delivered the aluminum case marked "Batch-by-Batch GC Certified" to the client, the technical director verified the data repeatedly: "This is the most stable raw material we've seen in six months." This trust secured their first long-term contract, and the company still uses Sysem Chem's bromobenzene for cephalosporin production.​

The 2012 pesticide upgrading wave became a pivotal turning point. A Zhejiang pesticide manufacturer faced challenges in insecticide synthesis: traditional 2-Bromobutane had insufficient reactivity, and free bromine corroded equipment. Lin's team optimized the reaction conditions of sec-butanol and hydrobromic acid, reducing acid value through stepwise washing . The final "High-Activity sec-Butyl Bromide" increased reaction conversion by 15% and solved equipment corrosion. Today, 12 grams of 2-Bromobutane from Sysem Chem goes into every 100 grams of the manufacturer's flagship fungicide .​

From pharmaceutical intermediates to pesticide synthesis, from lab-scale trials to 10,000-ton intelligent workshops, Sysem Chem has upheld its "Dual Bromide Standards": bromobenzene purity stably ≥99.5%, 2-Bromobutane moisture content ≤0.05%. As Lin wrote on the technical manual's title page: "The reactivity of bromine atoms holds industrial codes—our mission is to make this reactivity precisely controllable."