Overview
Bromides are chemical compounds containing the bromide ion (Br⁻), derived from bromine. They form through reactions between bromine and metals or organic molecules, resulting in ionic (e.g., sodium bromide) or covalent (e.g., methyl bromide) structures. Historically, bromides like potassium bromide were used as sedatives, though modern applications prioritize industrial uses. Their versatility stems from bromine's intermediate electronegativity, enabling diverse reactivity in organic synthesis and material science.
Physical and Chemical Properties
Bromide salts are typically crystalline solids with high melting points due to ionic bonding. Solubility varies: alkali metal bromides (e.g., NaBr) are highly water-soluble, while silver bromide is photosensitive, a property exploited in photography. Bromide ions act as nucleophiles in substitution reactions and form complexes with metals like mercury. They also exhibit reducing properties, reacting with strong oxidizers (e.g., chlorine) to liberate bromine gas. Hygroscopicity is common, necessitating dry storage for technical-grade products.
Main Applications
In pharmaceuticals, bromides serve as anticonvulsants (e.g., potassium bromide for epilepsy in veterinary medicine). The photography industry relies on silver bromide's light sensitivity for film emulsions. Flame retardants account for ~30% of bromide use, where compounds like hexabromocyclododecane (HBCD) suppress combustion. Oil drilling utilizes calcium bromide in high-density completion fluids. Emerging applications include electrolyte components in zinc-bromine batteries.
Safety and Storage
Bromides require careful handling due to potential toxicity. Acute exposure may irritate mucous membranes, while chronic intake can cause bromism—a condition with neurological symptoms like confusion and tremors. Store in corrosion-resistant containers (HDPE for hygroscopic forms) away from acids and oxidizers. Labeling should comply with GHS standards, particularly for bromomethanes (ozone-depleting substances). Workplace exposure limits typically follow 0.1–1 mg/m³ (as Br) for airborne particulates.
B2B Procurement Guide
Industrial buyers should prioritize suppliers with ISO 9001 certification and batch-specific COAs (Certificates of Analysis). Key specifications include purity (≥99% for reagent-grade), heavy metal content (<10 ppm), and moisture levels (<0.5% for anhydrous forms). Bulk purchases (1+ metric tons) often secure 10–15% discounts. Regional logistics matter—sea freight is cost-effective for Asian-sourced bromides, while European buyers may prefer local producers like ICL-IP (Israel) or Albemarle (USA) for shorter lead times.
Related Manufacturers
- 主营：叔碳酸、十八醛、溶菌酶、海藻糖、癸二醇、氨基丙基、氢路噻嗪、邻苯二甲、乙基碳二、羟基癸酸、正十七烷、谷胱甘肽、烷二甲醇、松果体素、vc磷酸酯镁、2-甲基丁醛、朱栾倍半萜、丁烷四乙酸、表面活性剂、癸烷撑二醇、缩水甘油邻、10-羟基羊蜡酸、氢氯噻嗪杂质、盐酸邻菲罗啉、壳聚糖季铵盐
- 主营：4-丁基间苯二酚
- 主营：全氟三丁胺、硅树脂、医药中间体
- 主营：阻燃剂、抗氧剂、氰酸酯树脂、骨水泥、硅酸三钙、铝酸三钙、光固化剂
- 主营：苯肼、氯甲基苯乙烯、无水氯化锂、丙酰乙酸甲酯、邻硝基苯磺酰氯、碘甲烷、亚磷酸三苯酯、4-二氢吡喃、苯并噻唑、苄胺、4-溴靛红、苯基锂、叔丁醇钾、三丁基膦、四羟基二硼
- 主营：乙酸镁、并噻吩、三蝶烯、硫酸锂、二乙烯、硫酸锶、肌氨酸、嘧菌酯、碳酸镁、新癸酸、赖氨酸、多佐胺、咯菌腈、乙氧基、茚三酮、咖啡酸、氟苯基、α-氟萘、羟乙基、异恶唑、2223-82-7、喹啉黄、庚二酸、虫酰肼、吡咯并
- 主营：异硫氰酸胍、β巯基乙醇、蛋白酶k、三(羟甲基)氨基甲烷tris、二硫苏糖醇(DTT)、焦碳酸二乙酯DEPC、EDTA二钠、十二烷基苯磺酸钠