2-Ethylhexyl Bromide: A Chemical with a Story and a Future
Historical Development
Back in the early part of the 20th century, chemists searching for better alkylating agents turned to brominated alkanes for inspiration. The discovery and early implementation of 2-ethylhexyl bromide trace back to work on synthesizing intermediates for flavors, fragrances, and especially plasticizers. Early manufacturers saw demand in the wake of booming plastics production after World War II, particularly as plasticizer precursors and in the formation of surfactants. Laboratory researchers began to standardize its preparation and purification, and industrial practices followed suit. As the chemical industry embraced halogenated hydrocarbons for a broad range of syntheses, 2-ethylhexyl bromide found a permanent role not only in organic chemistry toolkits but in large-scale applications as well.
Product Overview
2-Ethylhexyl bromide, sometimes referred to as 1-bromo-2-ethylhexane or simply octyl bromide, usually appears as a colorless to pale yellow liquid. Producers sell it mainly for chemical synthesis, especially as a building block in pharmaceuticals, agrochemicals, and advanced polymers. Its role as an alkylating agent makes it valuable for forming carbon–carbon or carbon–heteroatom bonds. This versatility keeps it in demand for dozens of downstream commercial transformations. Most chemical catalogues list it for both laboratory use and high-purity industrial synthesis, with specifications matching the requirements of those fields.
Physical & Chemical Properties
With a molecular formula of C8H17Br and a molecular weight around 193.13 g/mol, 2-ethylhexyl bromide boils at roughly 199–202°C. The liquid shows low solubility in water but mixes well with nonpolar organic solvents. Its refractive index hovers near 1.46 and it registers a density close to 1.13 g/cm³ at room temperature. The bromine atom attached to the primary carbon produces significant reactivity, making the compound sensitive to light and prone to slow degradation on prolonged storage. The carbon-bromine bond remains the main site for substitution and elimination reactions, a trait chemists have long exploited.
Technical Specifications & Labeling
Commercial samples of 2-ethylhexyl bromide often reach purities above 98%. Typical certificates of analysis include physical characteristics (boiling points, density, refractive index) and impurity content such as water or other halogenated byproducts. Labeling mandates commonly display hazard pictograms warning of harm if inhaled, swallowed, or in contact with skin. The UN number for transport (UN 2688) and the relevant hazard and precautionary statements form part of industry standards for labeling. Chemists working with this product often verify identity by GC-MS or NMR, methods that can quickly pick up on both purity and potential isomer contamination.
Preparation Method
Traditional preparation of 2-ethylhexyl bromide involves the reaction of 2-ethylhexanol with hydrobromic acid or phosphorus tribromide, usually under controlled temperatures to limit overreaction. Some industrial flows use sodium bromide and sulfuric acid, generating hydrobromic acid in situ for a cleaner process. Newly developed catalytic tests focus on reducing hazardous byproducts and improving yields through better phase-transfer catalysts. After synthesis, washing and distillation clean up the crude product, and drying agents like anhydrous calcium chloride remove residual water. Scale-up varies from kilogram laboratory batches to multi-ton production, but the basic steps remain much the same.
Chemical Reactions & Modifications
The bromine in 2-ethylhexyl bromide opens doors to many reactions: nucleophilic substitution introduces a wide range of functional groups, permitting formation of ethers, amines, and thioethers. Reduction with metals or hydride donors strips out the bromine, creating alkanes or coupling partners. In some hands, it serves as an intermediate in Grignard reagent preparation for carbon–carbon bond formation. Modern research focuses on developing metal-catalyzed couplings (like Suzuki or Kumada reactions) that use alkyl bromides as starting points for more complex molecules. Fine-tuning conditions for regioselectivity and suppressing elimination side reactions forms an ongoing challenge for synthetic chemists.
Synonyms & Product Names
Chemical suppliers and scientific publications refer to the compound by several names: 2-ethylhexyl bromide, 1-bromo-2-ethylhexane, octyl bromide, and sometimes as Primene JMT bromide. Each name reflects a slightly different background—a chemist looking for a branched-chain bromoalkane or an industry buyer searching for a surfactant precursor. This variety sometimes creates confusion in procurement or literature searches, a challenge best solved by always including the CAS number (typically 18908-66-2) in documentation and purchasing records.
Safety & Operational Standards
Chemists handling 2-ethylhexyl bromide learn to respect its hazards. Skin and eye contact can produce significant irritation; inhalation of vapors poses risks to the respiratory system. Industrial hygiene recommendations call for gloves protecting against liquid exposure, goggles, and proper ventilation, often including local exhaust. Many companies mandate storage in flammables cabinets away from oxidizing agents or bases. Workers learn the importance of spill containment, fire suppression systems, and emergency eyewash stations when dealing with this class of chemicals. Disposal typically requires incineration at approved facilities due to persistent toxicity, and regulatory bodies like OSHA and the European Chemicals Agency enforce detailed safety data sheet requirements.
Application Area
Core uses of 2-ethylhexyl bromide fall into several fields. The compound often appears in the pharmaceutical industry where it signs on as a reagent for alkylating amines and other nucleophiles during drug molecule construction. Agricultural chemical makers employ it for building pesticide and herbicide intermediates that improve absorption or bioactivity. Polymer scientists use it to incorporate alkyl groups into resins, yielding products with altered plasticity or improved compatibility for blending. It has also carved out a place in some specialty surfactants, lubricants, and plasticizer formulations. In finer chemical work, the molecule acts as a versatile stepping stone for advanced organic syntheses.
Research & Development
Researchers have not stood still in developing new uses and safer processes for 2-ethylhexyl bromide. Recent studies target low-waste or catalyst-optimized methods for synthesis, motivated by green chemistry trends. In the synthetic community, the drive has shifted toward broader coupling reactions where primary alkyl bromides, historically difficult to use, now participate in cross-coupling thanks to palladium or nickel catalysts. As computation advances, predictive toxicology and reaction modeling help chemists avoid adverse outcomes and optimize reaction pathways. Automation and continuous flow production catch the eye of process chemists seeking higher efficiency and reduced worker exposure.
Toxicity Research
Scientists have long known that alkyl bromides carry some health risks, and 2-ethylhexyl bromide is no exception. Toxicology tests show oral and dermal toxicity in animals at moderate doses. Inhalation can depress the central nervous system and provoke headaches, dizziness, or respiratory irritation. Environmental studies mark it as a persistent organic pollutant, capable of bioaccumulation when improperly released. Research highlights the dangers of chronic exposure, especially for workers in bulk production or regular laboratory users. To manage risks, working within established exposure limits and wearing personal protective equipment stands as standard practice. Animal welfare considerations continue to push for alternative testing methods using cell cultures or computational screens.
Future Prospects
Outlooks for 2-ethylhexyl bromide revolve around sustainable chemistry and industrial innovation. Green chemistry groups want to replace hazardous reagents and develop recycling loops for spent product. Biobased raw materials for brominating agents could lower the environmental footprint. Regulatory tightening on toxic or persistent organics will challenge traditional methods, spurring more research into safer alternatives or closed-loop processing. In synthetic chemistry, expanded use in cross-coupling and tailored pharmaceutical syntheses will likely keep demand steady, but only as long as safety and regulatory compliance keep pace. Continued cooperation between academia and industry promises smarter, cleaner, and safer handling of this versatile molecule in years to come.
The Place of 2-Ethylhexyl Bromide in Industry
2-Ethylhexyl bromide doesn’t get much time in the spotlight, yet this chemical touches many corners of manufacturing. The main reason folks use it comes down to how it reacts. Chemists know this stuff as a go-to for making other compounds, especially those with bromine. You’ll find it helping in the setup for pharmaceuticals, flotation agents for mining, plasticizers, and sometimes even specialty dyes.
Why 2-Ethylhexyl Bromide Gets Picked
I once spent a summer at a chemical plant, and it’s clear. Versatility puts it ahead in applications that need a confident kick of bromine for making bigger, more complex molecules. Think about a pharma company aiming to build a new heart medication: their process can rely on the chemistry of 2-ethylhexyl bromide to introduce just the right group onto a molecule, setting up the next reaction.
Rubber additives are another example. Tire makers like the characteristics that bromine brings to polymers. The chemical structure in 2-ethylhexyl bromide offers flexibility for attaching those bromine atoms at the right spot on a much bigger chain molecule. One batch in the reactor, and suddenly, the rubber holds up better under heat or cold.
Behind the Scenes: Supporting Roles
Production of specialty surfactants in mining leans on compounds like this. Miners use surfactants to grab up minerals in ore and separate them from waste. The bromine backbone in 2-ethylhexyl bromide does half the heavy lifting, opening the door for those minerals to float away into collection tanks.
Let’s not overlook custom-made dyes, either. Specific shades and performance in textiles often trace back to how well bromine-containing ingredients blend in with other chemicals. You can thank 2-ethylhexyl bromide for making these reactions work on the industrial scale.
Tough Questions: Safety and Environment
Bringing this chemical into a process isn’t all smooth sailing. Many safety officers will pull up the Material Safety Data Sheet and notice warnings about flammability, skin irritation, or long-term exposure risks. Everyday people aren’t going to buy this for cleaning windows. Only trained staff, wearing full protective gear, handle barrels of 2-ethylhexyl bromide. Dropping the ball on storage or handling could mean fires, or even health issues for workers.
Communities near manufacturing hubs worry, too. It takes effort to keep any industrial chemical out of the groundwater or air. Good companies invest in scrubbers, spill protocols, and plant design to hold leaks to near zero. They watch government regulations closely, since 2-ethylhexyl bromide doesn’t break down easily outside the lab.
Better Pathways Forward
Smarter chemistry could reduce the amounts needed over time. Some research teams already explore catalysts or alternative bromine sources that achieve the same results with less danger and waste. Companies sticking with 2-ethylhexyl bromide need to keep updating equipment, running training, and strengthening emergency plans.
In my years seeing industrial sites up close, successful outfits keep communication lines open—with city officials, local clinics, and environmental groups. Trust starts with transparency. If you ask plant managers what matters most, most point to staying above board with their neighbors and regulators. The work may not be glamorous, but it’s part of using chemicals like 2-ethylhexyl bromide responsibly.
Understanding the Ingredient Itself
There’s always something a little mesmerizing about looking at a chemical name and knowing that behind those words is a real-world substance. 2-Ethylhexyl bromide isn’t just a tongue-twister, it’s an actual chemical with jobs to do in labs and industries. The chemical formula for 2-Ethylhexyl bromide is C8H17Br. This isn’t some obscure lab curiosity – it’s a staple in organic chemistry and synthesis circles.
Breaking Down the Structure
What does C8H17Br really mean? Eight carbons, seventeen hydrogens, and one bromine atom. Sometimes, chemistry looks daunting, but formulas like this tell their own story. Here’s how it shapes up: you take 2-ethylhexanol, swap out a hydroxyl group for a bromine atom, and you get 2-Ethylhexyl bromide. That bromine atom isn’t just there for show. It completely changes how this molecule behaves. For example, replacing an -OH group with -Br turns a relatively innocent alcohol into a much more reactive alkyl halide. That lets chemists use it as a reactant in building more complex molecules.
Why the Formula Matters
For people tinkering in laboratories, formulas aren’t just theoretical. They matter in everyday problem-solving. During my undergraduate days in an organic lab, weighing something with an extra bromine atom would always push up the molecular weight. You could barely make sense of yield percentages or purity until you accounted for every atom, right down to the single bromine. Getting a formula like C8H17Br wrong can easily sidetrack a three-hour experiment, turn a clean distillation into a smelly mess, or worse, land you with an unexpected reaction product.
Fact-Based Importance in the World
Outside small-scale experimentation, 2-Ethylhexyl bromide pops up in manufacturing, especially in the production of specialty chemicals and pharmaceuticals. Its chemical formula defines how it reacts with other substances—changing the reactivity, boiling points, and even safety procedures. For instance, organic bromides tend to be more environmentally regulated compared to their friendlier cousins like alcohols or simple alkanes. In 2023, the EPA reported that brominated organic compounds contributed to toxic waste streams in some regions, raising both regulatory scrutiny and demand for careful sourcing and waste disposal.
Looking at Solutions
Challenges come up with chemicals like this. Handling bromine compounds can be risky, sometimes toxic, sometimes persistent in the environment. Applying personal experience from the lab, mixing chemicals like 2-Ethylhexyl bromide takes patience, proper ventilation, and the right protective gear, not a casual “mix and wait.” One approach involves switching to less hazardous alkylating agents where possible, especially for large-scale industrial use. Some researchers have explored using greener solvents or catalysts to cut down on toxic byproducts. Teaching and enforcing these protocols from university labs onward can keep accidents down and chemical waste in check.
Shared Responsibility
It’s not only chemists who should know what the formula means. Product designers, environmental safety teams, and even the end-users share some responsibility. Transparency about what goes into a product builds trust. If everyone in the chain understands what C8H17Br means, it leads to safer workspaces, better products, and a smaller environmental footprint. Knowing the formula isn’t just a trivia fact—it's a step toward mindful, informed practice.
Ordinary Working Life Meets Chemical Reality
Factories and research labs use plenty of specialty chemicals, and 2-ethylhexyl bromide is one that comes up in both synthetic chemistry and industrial manufacturing. To most people, it’s an unfamiliar substance—yet for those handling chemical processes or working near them, its presence brings up an important question: is it putting workers’ health at risk?
Getting to Know the Substance
2-Ethylhexyl bromide has a clear, faintly pleasant odor. Used in synthesizing other compounds, especially in pharmaceuticals and custom-engineered materials, this chemical pops up in everything from research benches to large-scale production. I remember my own first day in a commercial lab, and the long safety meeting where we pored over labels—words like “bromide” always ended up circled.
Common Exposure: Not Just a Lab Thing
Although most people don’t run across 2-ethylhexyl bromide at the grocery store, production workers, chemical engineers, lab technicians, and warehouse operators sometimes work right next to it. The most frequent routes of exposure are through inhalation, skin contact, or, in rare cases, accidental ingestion.
Short-term exposure can mean sore throat, dizziness, eye irritation, and headaches. NIOSH (National Institute for Occupational Safety and Health) and the ECHA (European Chemicals Agency) both list brominated compounds as worth particular caution. Even without dramatic accidents, handling the substance without gloves or face masks often brings immediate discomfort.
Long-Term Health Risks: A Hidden Side?
Studies on alkyl bromides point to more than minor irritations. Extended contact can damage the liver and nervous system. Animal trials, including those published in the Toxicology and Applied Pharmacology journal, show chronic effects ranging from ataxia (movement problems) to changes in organ tissue. Workers exposed for years report fatigue, memory problems, and persistent cough.
Nothing turns heads more quickly than hearing “possible carcinogen.” While 2-ethylhexyl bromide hasn’t landed on the IARC’s carcinogen list, its chemical cousins, the alkyl halides, sometimes act as cancer promoters. Even if there’s no definitive link, this shadow pushes safety officers to double-check every practice.
Safer Handling, Real Solutions
Chemical hazards never care about convenience. To limit risks, employers put in place extraction hoods, chemical-resistant gloves, and tight-fitting goggles. Over time, I’ve worked with teams who made lab coats standard, checked for smells, and learned to read every new safety datasheet before even opening the bottle. Training and regular risk drills work. So do periodic medical checkups—spotting symptoms even before they turn into bigger issues.
Strong oversight can help as well, especially when it leads to routine reviews on how chemicals are managed and stored. Simple improvements, like switching to smaller containers or using less hazardous reagents, can pay off. Regular check-ins with occupational health nurses matter: nobody wants to find out something’s wrong after it’s too late to fix.
Building a Culture of Awareness
Hazardous chemical exposure isn’t solved by switching brands. Companies that thrive lean on real-time monitoring and honest communication with their staff. Telling the truth about risk means talking to people, not just posting warnings behind locked cabinet doors. Every person who works with or near 2-ethylhexyl bromide deserves both the facts and the tools to stay healthy. Relying on protocols, not luck, means better lives for the folks who make modern chemistry work.
Understanding the Risks Behind the Bottle
2-Ethylhexyl bromide might sound like just another chemical on a lab shelf, but over the years, I’ve seen what can go wrong when people underestimate the stuff they work with daily. This compound doesn’t play nice. It carries some serious health risks—respiratory irritation, skin damage, even organ toxicity if you mess up. Regulatory agencies, like OSHA and the European Chemicals Agency, flag this one as a hazardous material. Anyone responsible for stashing it away can’t afford to cut corners or guess how to handle it.
Choosing a Location With Purpose
Space matters as much as the container. Good storage starts with a dry, shaded, and well-ventilated area. Heat promotes decomposition and increases fume release, so that rules out attics, window ledges, or hot storerooms. Don’t accept any hint of moisture in the air, since 2-ethylhexyl bromide reacts badly to water. Dampness can trigger chemical breakdown, which in turn leads to barrel corrosion and leaks. I always pay attention to basic stuff like avoiding low spots on the floor—spills gravitate there and stick around longer.
Picking the Right Container
I’ve learned that proper packaging stands between you and a nasty accident. This chemical prefers glass bottles or high-grade plastic with tight seals. Never transfer it into random, unlabeled containers or use metal cans that might corrode on contact. Original packaging often has an inner liner for a reason—don’t discard it. I’ve worked in labs where someone decided to “upgrade” to a bigger drum. Within weeks, bromide fumes ate through a seam. Always pick containers made for halogenated organic solvents and check them for cracks and sticky residue.
Keeping People Safe
It takes more than labels and paperwork. I always encourage routine inspections for leaks, corrosion, or any sign of vapor escaping. Strong odors signal trouble—never ignore them. The best labs and warehouses I’ve seen keep spill kits right beside storage areas. Quick access matters more than stuffing them in a closet down the hall. Proper training helps too: people gain respect for chemicals only after learning what happens when they go off script. Safety goggles, gloves, and lab coats keep exposure in check. No shortcuts here—your coworkers and neighbors are counting on good habits.
Documenting Everything
Every bottle wears two labels: original manufacturer info and an in-house tag showing receipt and expiration. Logs track quantities, storage dates, and inspections. It might sound like extra paperwork, but tracing a batch after a spill or contamination event demands such records. I rely on this system to spot old, degraded supplies and arrange for professional disposal before they turn into hazards.
What to Do With Waste
Disposal deserves careful attention—this isn’t something to pour down any drain. Reputable waste contractors handle hazardous solvents and offer manifests for every pickup. Local regulations set limits and processes, so review them before any shipment leaves the site. Some labs store waste separately in a vented, lockable cabinet, far from raw materials. This approach limits risk if something does leak or catch fire.
Learning From Mistakes and Staying Vigilant
Best practices change as new incidents come to light or standards evolve. I talk with peers and read industry bulletins so small slip-ups never grow into crises. Robust storage balances technical knowledge, routine inspections, and a healthy respect for risk. After all these years, I remain convinced: handling chemicals like 2-ethylhexyl bromide demands more than just rules—it asks for diligence, teamwork, and common sense every step of the way.
An Everyday Perspective on Chemical Safety
2-Ethylhexyl Bromide never showed up on my radar until I found myself in the middle of a small research lab in my early twenties. Back then, no one handed me a safety manual. My mentor just said: “Respect the labels, trust your nose, and always wear gloves.” Wise words – especially considering how sneaky this chemical can be. It may not shout danger like sulfuric acid, yet the risks stack up fast if you treat it casually.
Understand What You’re Handling
This clear, oily liquid can irritate the skin, eyes, and respiratory tract. Vapors build up faster than people expect in a closed space. Acute exposure brings headaches or nausea, and in more severe cases, it could knock your lungs or nervous system for a loop. The MSDS reads like a motivated warning sign, not just a suggestion.
Protective Gear: Not Just for Professionals
Long-sleeved shirts, chemical-resistant gloves, and safety goggles form the real basics. I once witnessed a rush job in the stockroom—a mechanic skipped eye protection. It ended with a run to the emergency room. Eye protection and proper gloves beat regret nine times out of ten. Don’t touch surfaces with bare hands. Wash up well after handling. Wearing a lab coat or apron saves laundry duty and limits accidental carries into living spaces.
Fresh Air and Ventilation
Good airflow protects everyone. Simple local extract fans often do the trick, but fume hoods lead the pack for reliability. I learned to crack a window, even if it wasn’t lab standard protocol. The difference became obvious when crew members stopped complaining about watery eyes or dry throats. Without good ventilation, even low vapor emissions can leave you dizzy and slow things down.
Storing and Disposing of Chemicals
Never store 2-Ethylhexyl Bromide next to acids, strong oxidizers, or flammable materials. Label every bottle in legible marker. At one company, a mix-up from faded writing cost us half a day and a fussy cleanup — so fresh labels matter. Keep containers tightly sealed and well away from eating areas. Specialized chemical waste bins do exist for disposal. Pouring leftovers down the drain or tossing in regular trash spells trouble for everyone.
Emergency Responses: Expect the Unexpected
Spills show up sooner or later. Having a spill kit nearby beats scrambling for paper towels. Absorbent pads, neutralizers, and gloves should be within arm's reach before anyone starts. In case of accidental contact, rinse skin right away with water. Eyes need more attention – eye wash stations save vision when seconds count. If vapors make someone feel sick or faint, move them to fresh air and call for medical help. Local emergency contact numbers—taped up on the wall—end confusion in a crunch.
Building Better Habits
Too many people get comfortable and cut corners. I once left a bottle uncapped “just for a moment,” only to discover a small leak soaking into the bench top. It cost us an hour of cleaning and extra disposal fees. That mistake drove home the value of focus and routine, even during busy times. Training keeps teams sharp and refreshes forgotten details.
The Value of Community and Guidance
Ask questions, double-check with more experienced colleagues, and keep up with updated guidelines. Employees who follow current best practices reduce risk for themselves and everyone around. Respect builds over time—often because of the minor accidents we've all seen or survived. It’s not about rules for the sake of rules. Careful handling protects livelihoods and lives, and it keeps the lab—or workshop, or garage—running smoothly for everyone involved.
| Names | |
| Preferred IUPAC name | 2-bromo-2-ethylhexane |
| Other names |
1-Bromo-2-ethylhexane
2-Ethylhexyl bromide 2-Ethyl-1-bromohexane Bromide 2-ethylhexyl |
| Pronunciation | /tuː ˌɛθ.ɪlˈhɛk.sɪl ˈbroʊ.maɪd/ |
| Identifiers | |
| CAS Number | 18908-66-2 |
| Beilstein Reference | 1209372 |
| ChEBI | CHEBI:44257 |
| ChEMBL | CHEMBL4240287 |
| ChemSpider | 6496 |
| DrugBank | DB16641 |
| ECHA InfoCard | 03d8de2d-b5ca-4e1d-9036-e2e8b5bc5cca |
| EC Number | 211-339-8 |
| Gmelin Reference | 4978 |
| KEGG | C15608 |
| MeSH | D004544 |
| PubChem CID | 12309 |
| RTECS number | RQ8750000 |
| UNII | QT6A6LZN8P |
| UN number | UN2346 |
| Properties | |
| Chemical formula | C8H17Br |
| Molar mass | 261.20 g/mol |
| Appearance | Colorless transparent liquid |
| Odor | Sweet |
| Density | 1.177 g/mL at 25 °C |
| Solubility in water | Insoluble |
| log P | 4.6 |
| Vapor pressure | 0.11 mmHg (20 °C) |
| Magnetic susceptibility (χ) | -7.22 × 10⁻⁶ cm³/mol |
| Refractive index (nD) | 1.4840 |
| Viscosity | 2.62 mPa·s (20 °C) |
| Dipole moment | 2.21 D |
| Thermochemistry | |
| Std molar entropy (S⦵298) | 531.5 J·mol⁻¹·K⁻¹ |
| Std enthalpy of formation (ΔfH⦵298) | -58.7 kJ/mol |
| Std enthalpy of combustion (ΔcH⦵298) | -5657.9 kJ/mol |
| Hazards | |
| Main hazards | Harmful if swallowed. Causes skin irritation. Causes serious eye irritation. May cause respiratory irritation. |
| GHS labelling | GHS02, GHS07 |
| Pictograms | GHS02,GHS07 |
| Signal word | Warning |
| Hazard statements | H302, H315, H319, H335 |
| Precautionary statements | P210, P261, P264, P271, P301+P312, P304+P340, P312, P330, P403+P233, P405, P501 |
| NFPA 704 (fire diamond) | 1-3-0-☢ |
| Flash point | 102 °C |
| Autoignition temperature | 170°C |
| Lethal dose or concentration | LD50 (oral, rat): 5750 mg/kg |
| LD50 (median dose) | LD50 (median dose): 5,000 mg/kg (oral, rat) |
| NIOSH | KK8225000 |
| PEL (Permissible) | PEL (Permissible Exposure Limit) for 2-Ethylhexyl Bromide: Not established |
| REL (Recommended) | 500 mg |
| Related compounds | |
| Related compounds |
1-Bromooctane
2-Ethylhexanol 2-Ethylhexyl chloride 2-Ethylhexyl acetate n-Octyl bromide |
