Overview
2,3-Dibromopropionic acid is a halogenated carboxylic acid with two bromine atoms at the α and β positions. First synthesized in the early 20th century, it has become an important building block in specialty chemical manufacturing. The compound's reactivity stems from both its carboxylic acid functionality and labile bromine atoms, making it valuable for nucleophilic substitution reactions. Industrial production typically involves bromination of acrylic acid or hydrolysis of 2,3-dibromopropionitrile. Major manufacturers are located in China, India, and Western Europe, with global annual production estimated at 500-800 metric tons. Technical grade (95-97% purity) dominates the market, though pharmaceutical-grade (>99%) is available at premium pricing.
Physical and Chemical Properties
As a solid at room temperature, 2,3-dibromopropionic acid exhibits moderate hygroscopicity and should be protected from moisture absorption. Its crystalline structure gives it good handling properties for industrial weighing and dispensing. The bromine atoms significantly increase molecular weight compared to propionic acid (74.08 g/mol vs. 231.87 g/mol). Chemically, it demonstrates typical carboxylic acid behavior (salt formation, esterification) while the bromine atoms participate in elimination and substitution reactions. Thermal gravimetric analysis shows decomposition beginning at 150°C, releasing hydrogen bromide gas. UV-Vis spectroscopy reveals strong absorption below 300 nm, requiring amber glass containers for light-sensitive applications.
Main Applications
In pharmaceuticals, this compound serves as a precursor for β-lactam antibiotics and anticancer agents through bromine displacement reactions. The agrochemical sector utilizes it in synthesizing soil fumigants and fungicides, particularly for cash crops like strawberries and tomatoes. Approximately 60% of production supplies flame retardant formulations for textiles and polymers. Emerging applications include use as a crosslinking agent for specialty adhesives and in organic conductive materials research. Recent patents highlight its role in preparing brominated liquid crystals for electronic displays. In analytical chemistry, it functions as a derivatization agent for GC-MS analysis of certain metabolites.
Safety and Storage
Classified as Skin Corr. 1B under GHS, this chemical requires corrosion-resistant handling equipment (PTFE or glass-lined). Spills should be neutralized with sodium bicarbonate before disposal. Firefighting requires alcohol-resistant foam due to potential HBr release. LD50 (oral, rat) is 320 mg/kg, warranting strict engineering controls in production facilities. Long-term storage stability is approximately 2 years when kept below 25°C with desiccants. Bulk shipments typically use polyethylene-lined steel drums (25-50kg) or intermediate bulk containers (IBCs). Compatibility testing is essential when storing with amines or reducing agents, as exothermic reactions may occur. Regulatory status varies by region, with REACH registration required for EU imports above 1 ton/year.
B2B Procurement Guide
Industrial buyers should request certificates of analysis specifying: bromine content (theoretical 68.9%), acid value (typically 240-245 mg KOH/g), and heavy metal contaminants (<10 ppm). Batch-to-batch consistency is critical for process chemistry applications - demand HPLC chromatograms showing impurity profiles. For large orders (5+ metric tons), negotiate FOB prices from Chinese producers currently dominating the market. Consider Incoterms carefully due to hazardous material shipping regulations. Alternative sourcing options include Indian manufacturers offering competitive pricing but with longer lead times. Just-in-time inventory is recommended due to the compound's limited shelf life under tropical conditions.
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