Overview
1-Bromooctane is a halogenated hydrocarbon classified as an alkyl bromide, featuring an eight-carbon chain with a terminal bromine atom. As a versatile intermediate in organic chemistry, it participates in nucleophilic substitution reactions to introduce octyl groups into target molecules. The compound gained industrial significance due to its balanced reactivity and hydrophobic properties, making it valuable for modifying molecular structures. First synthesized in the early 20th century, bromooctane now sees widespread use in specialty chemical manufacturing. Its production typically involves free-radical bromination of n-octane or alcohol substitution reactions. Modern purification techniques ensure high chemical purity, with technical-grade material containing ≤1% residual octanol.
Physical and Chemical Properties
1-Bromooctane presents as a mobile liquid with a characteristic sweet, ether-like odor. Its density of 1.118 g/cm³ makes it heavier than water, while the boiling point of 201-202°C allows for easy separation from many reaction mixtures. The compound's refractive index (1.450-1.453 at 20°C) serves as a purity indicator. Chemically, the bromine atom exhibits good leaving group ability in SN2 reactions, though less reactive than shorter-chain bromoalkanes. It shows stability under neutral conditions but may decompose when exposed to strong bases or reducing agents. The compound's non-polar nature contributes to excellent solubility in hydrocarbons, ethers, and chlorinated solvents.
Main Applications
In pharmaceutical synthesis, 1-bromooctane acts as a key building block for quaternary ammonium compounds with antimicrobial properties. It's utilized in manufacturing octyl-containing active pharmaceutical ingredients (APIs) and phase-transfer catalysts. The agrochemical industry employs it to produce crop protection agents with enhanced leaf adhesion. Material science applications include the production of alkylated silicones for water-repellent coatings and octyl-modified silica nanoparticles. Additionally, it serves as an intermediate for surfactants in detergents and emulsifiers, where the C8 chain provides optimal surface activity without excessive foaming.
Safety and Storage
As a brominated compound, 1-bromooctane requires careful handling to avoid skin contact and inhalation. Proper PPE including nitrile gloves and vapor respirators should be used when handling concentrated material. The liquid poses moderate fire risk (flash point 78°C) and produces toxic fumes when heated. Storage recommendations include amber glass or phenolic-lined steel containers to prevent photodegradation and corrosion. Containers should be nitrogen-purged for long-term storage to minimize oxidation. Incompatible materials include strong oxidizers, alkali metals, and concentrated acids. Spills should be contained with inert absorbents and disposed as halogenated waste.
B2B Procurement Guide
Industrial buyers should specify required purity (typically 98-99%), with gas chromatography certificates for critical applications. Moisture content below 0.1% is preferred for sensitive reactions. Bulk procurement in 200kg steel drums or isotanks offers cost advantages over small packaging. Technical evaluation should include bromine content analysis and residual alcohol testing. Reliable suppliers provide stable lead times (commonly 2-4 weeks) and comply with REACH regulations. For laboratory-scale purchases, 500mL-1L amber glass bottles with PTFE-lined caps ensure product integrity. Consider regional stock availability when planning just-in-time deliveries.
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