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Methyl nonadecanoate’s journey starts with the classic odd-chain fatty acids, which quietly populate the natural world. Decades ago, chemists began to take closer looks at minor lipid components in sources like dairy fats or plant waxes, noticing tiny peaks on gas chromatographs. Nonadecanoic acid, or margaric acid, didn’t draw big headlines, and its methyl ester variant only showed up as a technical curiosity at first. By the end of the twentieth century, specialty fat chemists and those interested in metabolic research had begun isolating it as both a chemical marker and a tool for studying the fate of lipids in living organisms. Its historical bedrock comes down to this: people kept finding it wherever fats and analytical chemists crossed paths, but rarely thought of it beyond its lab uses.
Methyl nonadecanoate, a member of the methyl ester family derived from nonadecanoic acid, looks like a colorless liquid or low-melting waxy solid at standard conditions. Its major asset sits in its chemical backbone: an unbranched chain of nineteen carbons, tipped with a methyl ester group. Molecular formula C20H40O2 anchors it firmly within the world of saturated fatty acid esters. Unlike the more popular C16 or C18 methyl esters found in biodiesel blends, methyl nonadecanoate brings a longer chain, leading to higher melting and boiling points—often landing somewhere above 300°C for boiling and in the 30–38°C range for melting. Density clocks in around 0.85 g/cm³. Its low reactivity and high thermal stability mean engineers and biochemists can count on it for applications that demand less volatility and more resilience against oxidation than shorter-chain counterparts.
The accepted standards set the bar for methyl nonadecanoate in terms of purity, typically surpassing 98% for research-grade material. TLC and GC-MS provide confirmation of identity, while NMR spectra serve as the linchpin for purity assessment. Labels tend to mention possible trace contaminants and include clear warnings for handling and storage. Since this compound plays in chemists’ hands more than everyday consumers', regulatory labeling follows safety protocols set for laboratory chemicals—hazards, GHS pictograms, basic risk information—most of it rooted in common sense and respect for potential irritant properties rather than acute, systemic health dangers.
Production of methyl nonadecanoate borrows strategies from textbook esterifications. Start with nonadecanoic acid—itself snagged from hydrolysis of natural fats where it appears in tiny fractions, or from tailored synthesis using Grignard reactions with long-chain precursors. React it with methanol using an acid catalyst, typically sulfuric acid or p-toluenesulfonic acid, and gently heat the mix, driving off water. Industrial and research chemists rely on this straightforward approach, though smaller scale batches often allow for gentle vacuum distillation to increase purity. The real challenge lies less in the esterification and more in the initial separation or synthesis of nonadecanoic acid, which tends not to occur in bulk in nature.
Once in hand, methyl nonadecanoate opens some interesting doors to organic transformations. Hydrolysis, back to nonadecanoic acid, finds use in academic labs studying lipid metabolism. Hydrogenolysis can reduce the ester, yielding the pure hydrocarbon—nonadecane. Nitration, halogenation, or peroxidation, under controlled conditions, deliver useful intermediates for surfactants and lubricants. Derivatization for analytical standards—such as isotopic labeling—lets metabolomics researchers track fatty acid fate in living systems. It doesn’t jump at many reactions under ambient conditions, reflecting its saturated, long-chain character, and so more exotic modifications lean on strong acid or base catalysts.
Methyl nonadecanoate appears in chemical catalogs and research literature under a handful of aliases. Chemists tally it as nonadecanoic acid methyl ester, methyl margarate, or simply nonadecylic acid methyl ester. The systematic name, methyl nonadecanoate, sums up its essential structure. Beyond these, the CAS number pulls it into formal registers and databases, letting researchers worldwide know they’re talking about the same molecule, even as product codes and batch IDs change.
Despite its relatively benign nature, methyl nonadecanoate calls for the full spectrum of lab safety. Standard gloves and goggles serve most users well, and good ventilation prevents accidental inhalation during weighing or transfer. Lacking widespread evidence of chronic toxicity, it doesn’t rank as a major threat, but can cause mild irritation if splashed on skin or eyes—no reason for carelessness. Storage favors cool, dry, stable conditions, away from strong acids or oxidizers not because of explosive reactivity, but to keep the product intact for analytical or synthetic needs. Spills and disposal generally fall under routine chemical waste protocols, with washed hands and uncluttered benches rounding out the checklist.
Most of methyl nonadecanoate’s work happens quietly, far behind the scenes. Analytical chemistry labs value it as an internal standard for gas chromatography, letting scientists quantify and identify fatty acids in food, biological specimens, or environmental samples. Its predictable retention time and response factor, thanks to its odd chain and low abundance in nature, mean it rarely overlaps with target analytes. Outside the lab, it has roles as a calibration tool in flavor chemistry, a minor additive in certain lubricating greases, and a subject of metabolic tracer studies in healthcare research. The long-chain ester structure means it rarely appears in industrial volumes, unlike shorter-chain methyl esters used in biodiesel or surfactant production, yet wherever precise lipid analysis matters, it’s close by.
Academic interest in methyl nonadecanoate, though less headline-grabbing than omega-3s or palmitic acid esters, hasn’t faded. Research groups push to understand the metabolic fate of odd-chain fatty acids, their links to metabolic health, and their subtle roles in mammalian physiology. Techniques for synthesizing labeled methyl nonadecanoate—introducing deuterium or carbon-13—fuel precise in vivo tracing studies. Ongoing improvements in chromatographic methods and mass spectrometry continue to refine how this ester serves in quantifying trace lipids, stretching from food safety tests to environmental diagnostics. As precision medicine grows, the need for well-characterized, benchmark compounds like methyl nonadecanoate only broadens.
Extensive animal or environmental impact studies on methyl nonadecanoate remain limited, mostly reflecting its low production volume and benign structure. Broad data on fatty acid methyl esters suggest low acute toxicity and limited bioaccumulation, especially for long, saturated chains like this. Cell culture studies generally report little or no cytotoxicity at moderate concentrations. Yet care always makes sense, since the body’s handling of uncommonly structured molecules can surprise. Accidental ingestion or inhalation at lab scale doesn’t pose the threat of carcinogens or neurotoxins, but occupational standards urge exposure reduction and monitoring pending longer-term research. Those who work daily with volatile organics know unforeseen sensitivities do crop up, so vigilance beats arrogance.
The trend toward high-sensitivity analytics drives rising demand for reference standards and tracers. Food authentication, forensic science, and clinical metabolomics all benefit from rare-fatty-acid esters that don’t easily mimic background noise. As researchers probe links between odd-chain fatty acids and reduced risks of chronic disease—like type 2 diabetes—methyl nonadecanoate could leap from the supply shelf into the debate over dietary recommendations. Rising interest in bio-based lubricants and specialty chemicals also sparks curiosity about forgotten esters that slip between the cracks of commodity fats. Looking forward, tighter ties between the fields of synthetic lipid chemistry, health sciences, and analytical instrumentation may turn this obscure ester into a regular reference, benchmark, or even a subject of intervention in human health. Those of us who dig into the details know that every compound matters, and sometimes, sleepy chemicals like methyl nonadecanoate help unlock stories that shape our understanding of the world around us.
Walk through a chemistry lab or flip through a technical catalog, and you might spot the name methyl nonadecanoate. The name sounds intimidating, but the role this compound plays touches real industries we rely on. As a methyl ester of nonadecanoic acid, it lands in a few practical places.
In the world of biodiesel, methyl nonadecanoate helps researchers and producers figure out fuel quality. Biodiesel mixes a bunch of different molecules, and scientists use methyl nonadecanoate as a marker for purity during testing. If you want to trust the tank at a biodiesel station or guarantee performance in a tractor motor, that testing step needs to run accurately. Using a known compound with stable properties, like methyl nonadecanoate, makes life a lot easier for chemists — and ultimately keeps engines running better. A 2023 study out of Europe listed this compound among the top internal standards that withstand variable weather, blending differences, and storage problems. That’s not a small thing in the quest to make biofuels mainstream.
Different labs rely on methyl nonadecanoate, not just for biofuel. Lipid researchers use it to study fats and oils. Looking back, I remember setting up gas chromatography runs as a student, using methyl nonadecanoate to create a reference signal. We would spike a sample with a dash of this compound, then compare other fatty acids against it. Reliable internal standards save time and avoid guesswork, which matters when you’re hunting down small differences in milk, fish, or seed oils.
Some may think that this only matters to university scientists, but food safety authorities also check fat profiles in imported oils. Without strong quality control, companies risk bottling fake or adulterated food products—and, as uncovered in the olive oil scandals of the past decade, that’s not a victimless crime. Methyl nonadecanoate offers a stable, trusted “reference point” many labs lean on to reveal slick business.
Every time something new enters the food or fuel chain, safety comes up. Methyl nonadecanoate doesn’t appear in large amounts in nature, so careful study makes sense. Animal studies haven’t shown any alarming toxicity, but new formulations and industrial interest always spark more questions about handling and waste. Workers making biodiesel, for instance, deal with different exposure levels than your average citizen. Regular air monitoring and best-practice training make sure nobody pays a health price for innovation.
This compound gets made by transesterifying nonadecanoic acid. If demand for biofuels stays strong, more production will likely follow. Companies have begun looking for cleaner, lower-waste production methods that line up better with environmental goals. Some startups use plant-based feedstocks and greener catalysts. These improvements matter—a messy manufacturing process cancels out the clean image of any renewable fuel. Regulators and watchdog groups monitor both ends: the lab, and the factory floor.
Methyl nonadecanoate might not sound like a staple outside of chemistry circles, but it supports better, safer products in daily life. From helping engine fuels burn cleaner to making sure food oils stack up, this little molecule carries big responsibility. Responsible sourcing, safe lab practices, and honest testing all ensure that its growing use keeps health, safety, and the environment in view.
Methyl nonadecanoate doesn’t often show up on the average shopping list, but it quietly powers a good chunk of what goes into many scientific and industrial processes. With the chemical formula C20H40O2, it might look complex on paper, but it follows a pretty clear pattern found in many fatty acid esters. You get this compound from the reaction between methanol and nonadecanoic acid. In essence, nonadecanoic acid brings in nineteen carbons from its fatty acid chain, and once linked with a methyl group, you have a twenty-carbon molecule with a straight, saturated backbone. That structural stability means it holds up well in different environments, whether under the microscope in a lab or heated inside a refinery.
Knowing the chemical formula matters a lot more than just for trivia night. As a chemist, formulas let us anticipate how a compound will behave. Methyl nonadecanoate’s long carbon chain means it’s anything but volatile. It won’t evaporate easily. Instead, you’re dealing with a molecule that resists breakdown and stands up to both temperature and light. This property is helpful for researchers using it as a reference in gas chromatography—planning for consistent retention times and reliable analytical benchmarks. Methyl esters like this one also show up when studying fats in oils, biodiesel, and even in certain cosmetics. If you’re working in one of those fields, getting the carbon count wrong can throw off measurements, waste resources, and compromise results.
Back during my research days, we handled samples with dozens of methyl esters, each with slightly different lengths and combinations. The smallest mislabel could snowball into confusion across a whole batch of results. With C20H40O2, there’s certainty and clarity, which matters especially if you’re sending a sample off for external testing or regulatory review. Lab certifications aren’t handed out for approximate answers. They want the specifics—knowing you’ve got methyl nonadecanoate, and not a close cousin like methyl stearate (C19H38O2).
Methyl nonadecanoate also steps into the spotlight when looking at renewable fuels. Vegetable oils and animal fats get converted into fatty acid methyl esters (FAMEs), which then become biodiesel. Each ester’s formula tells mechanics and regulators about combustion behavior, cold flow properties, and emissions. The longer the chain, like with methyl nonadecanoate, the higher the melting point and viscosity. For someone running an engine through a cold winter, these details guide fuel blending and modification choices. Mistakes can end with engines gumming up or performance dropping off a cliff.
Labs and manufacturers keep things on track by double-checking with analytical methods—gas chromatography, nuclear magnetic resonance, or mass spectrometry. If labs grew sloppy with formulas or relied too much on similar-sounding names, it would result in regulatory recalls, lawsuits, or simple but expensive errors. Training, accurate labeling, and strict documentation solve most of these headaches. Many teams I’ve worked with keep flashcards or quick-reference sheets nearby, so nobody mistakes one ester for another. No matter how basic it seems, that attention to the details—like confirming C20H40O2 is really the methyl ester of nonadecanoic acid—saves work, time, and money down the line.
I remember coming across methyl nonadecanoate during a project in the lab. The name triggers a string of questions for anyone unfamiliar. It’s simply a fatty acid methyl ester, often found in oils or derived from long-chain fatty acids, mainly in research or chemical industries.
Chemicals always deserve respect. Even if material safety data sheets (MSDS) flag methyl nonadecanoate as low in human toxicity, there’s a difference between low risk and no risk. Despite its low reactivity and history of use in many labs, nobody should scrape by without basic precautions.
People have this misconception that if a chemical doesn’t burn your skin or fill the air with hazardous fumes, they can set aside gloves or goggles. I’ve watched colleagues let their guard down, only to end up with skin irritation or respiratory discomfort from repeated contact or accidental inhalation. The truth is, every compound we deal with builds up a story in our bodies over time. Methyl nonadecanoate doesn’t shout its dangers, but the body will react if it’s forced to process enough foreign substances over months or years.
OSHA and other regulatory bodies usually group methyl nonadecanoate alongside many long-chain esters. You may not be hit with strict hazard codes compared to volatile organics or corrosives, but standard chemical hygiene plans still call for gloves that don’t melt or tear, splash-resistant goggles, and lab coats. Washing hands before lunch and avoiding food or drink in the lab matters as much with this ester as with others. In the rush to get experiments done, I’ve caught myself brushing off these basics—never a smart move, especially when trace residues can linger on surfaces.
Improper storage often stirs up problems that could stay quiet. I’ve seen containers left open in warm, humid spaces. Esters like this don’t explode or evaporate into toxic plumes, but small leaks attract dust and moisture, sometimes degrading into other compounds that you don’t want around. Keeping bottles tightly sealed, labeled, and off sunlit benches keeps the contents stable and limits unexpected interactions. That’s just practical housekeeping, learned through years of witnessing what happens when bottles go unchecked.
Disposal and cleanup can be tempting to treat as afterthoughts. Pouring leftovers down the drain may seem harmless, especially with a nontoxic compound, yet the right thing involves collecting waste in designated containers. This keeps the chemical out of water streams and avoids mixing with acids or bases that could cause problems. Lab protocols exist for a reason, shaped by old mistakes so others don’t repeat them. Following them stops a small slip from turning into paperwork or health complaints.
Some folks argue that overdoing PPE and protocols with a chemical like methyl nonadecanoate borders on paranoia. From experience, a culture of safety always beats a relaxed, shortcut mentality. New handlers learn by watching others, not by reading guidelines taped to the wall. Routine care becomes second nature if the people around you treat every substance with measured caution—no matter how gentle the label claims it to be.
Open conversations in the lab help people stay alert to risks that hide in plain sight. Encouraging questions, actual training with practical demonstrations, and clear signage work far better than sending out email memos. Safety works best when it’s everyone’s job, not stuck on one dusty shelf or in the hands of a single supervisor.
Anyone who spends time around chemicals knows it isn’t all paperwork and labeling. Behind every drum or bottle lies a choice: keep materials in shape or end up with waste nobody wants to handle. I’ve worked with fats and esters like methyl nonadecanoate, and a few lessons stick to memory. Methyl nonadecanoate—a long-chain fatty acid ester with structural stability—still faces slow degradation if allowed to sit unprotected or exposed to the wrong environment. Unwanted reactions creep in when attention slips, turning a hard-earned product into a liability.
Keep moisture out. Moisture loves to sneak in and start hydrolyzing esters, even the tough ones. A sealed glass container with a tight-fitting cap stands up to humidity better than a plastic bottle with a loose lid. If you see droplets inside, that’s often enough to spoil small batches over time.
Light and heat take their toll. Even methyl nonadecanoate, which doesn’t yellow or polymerize as easily as other organics, can slowly break down. Storing it in a cool, shaded place rather than under warehouse lights or in unventilated sheds makes a difference. I’ve seen containers stashed near radiators or sunlit window sills turn viscous or off-colored, a clear sign something started breaking down before its time. Temperatures between 2 and 8 °C (standard refrigerator range) seem to work best in the lab, avoiding solidification at lower temperatures but preventing oxidation and odor development.
It’s tempting to cut corners and park chemicals anywhere there’s space. I’ve watched teams regret stacking similar-looking bottles together, only to reach for the wrong container or find contamination from minor spills. Segregating by hazard—flammables here, oxidizers there, esters like methyl nonadecanoate a shelf apart—reduces mix-ups and keeps the worksite safer.
Once oxygen gets in, slow oxidation kicks in. Avoid containers made of materials that “breathe,” like certain cheaper plastics. Glass or thick-walled HDPE make solid choices. Even short exposure to air during transfer leads to the gradual buildup of peroxides or byproducts. Some labs flush containers with nitrogen, especially if methyl nonadecanoate sits for long periods. It’s a low-tech move that helps extend shelf life, particularly for materials that don’t turn over quickly.
Clear labels save time, energy, and prevent accidents. Include not only the name and concentration, but also the date of arrival or batch creation. That way, nobody has to guess what’s in the bottle or how long it’s sat on the shelf. Tracking batch numbers comes in handy if storage concerns, like container integrity or signs of degradation, crop up—allowing recall or investigation before bigger problems spread.
Proper storage isn’t just habit—it’s about stewardship. In labs and production sites I’ve visited, strong storage practices cut down waste, keep workers healthy, and shield the environment. Mishandled methyl nonadecanoate may not present the most toxic hazard, but spilled or spoiled batches still pose cleanup challenges. Investing in proper training, quality containers, clear documentation, and climate-controlled storage pays off by keeping operations efficient and products compliant with international safety standards.
If you work in research, chemical analysis, or certain manufacturing settings, you might already know methyl nonadecanoate isn’t like table sugar—you can’t just walk into the corner pharmacy and grab a bottle. This compound usually shows up in analytical chemistry labs, especially during lipid analysis. It’s a methyl ester made from nonadecanoic acid, and, unless you studied organic chemistry or run GC-MS analysis, the name might not ring a bell. People searching for this compound often need it for making reference standards or testing fatty acid profiles in oils, foods, and even biological samples.
Years of working with research chemicals taught me one thing: never gamble on source quality or safety. Reliable suppliers matter more than a good price. Trusted chemical distributors like Sigma-Aldrich, TCI America, and Fisher Scientific list methyl nonadecanoate in their catalogs. They also ensure quality checks, up-to-date safety data, and regulatory compliance. Without these, a simple mistake can lead to contaminated experiments or, worse, regulatory headaches. Online chemical stores also sell it, but always dig into reviews, lab safety records, and consult colleagues before sending an order. Scams and non-certified sellers can throw your research or process off track.
It’s not just about getting the bottle. Labs perform experiments that live and die by sample purity. Reputable suppliers usually provide certificates of analysis, batch traceability, and MSDS sheets. I’ve seen colleagues try to cut corners by buying cheaper, unchecked stuff. Their samples either failed quality tests or produced bad data. Spending a few extra bucks up front on a legitimate supply often saves time, resources, and stress in the long run. Regulatory inspections happen, too. Labs must prove their chemical sources. Proper documentation makes compliance easier and protects your project’s future.
Some small business owners, biohackers, or indie researchers want to source specialty chemicals like methyl nonadecanoate in small amounts. Retailers such as Lab Alley or ChemShuttle sometimes fill gaps here. They offer smaller, certified packages with full transparency. I’ve seen home researchers run into legal or safety issues when skipping proper channels. Regulations don’t care about project size. Always verify shipping restrictions and chemical handling laws in your region. Never try to “DIY” or repurpose stock chemicals meant for entirely different applications, like fuel additives or industrial cleaners, without knowing exact sourcing and composition.
Choosing the right source for specialty chemicals can look complicated, but proper planning pays off every time. Think about purpose, batch quality, reputation, and ongoing support. Reliable supply means steady work, safe labs, and data that stands up to peer review and inspections. Getting burned by a bad chemical order isn’t a lesson anyone wants to learn twice.
| Names | |
| Preferred IUPAC name | Methyl nonadecanoate |
| Other names |
Nonadecanoic acid methyl ester Methyl n-nonadecanoate |
| Pronunciation | /ˈmɛθ.ɪl nɒn.əˈdeɪ.kəˌnoʊ.eɪt/ |
| Identifiers | |
| CAS Number | 1731-86-8 |
| Beilstein Reference | 1722467 |
| ChEBI | CHEBI:72977 |
| ChEMBL | CHEMBL2230706 |
| ChemSpider | 172314 |
| DrugBank | DB02137 |
| ECHA InfoCard | 100.139.682 |
| EC Number | 242-512-1 |
| Gmelin Reference | 8599 |
| KEGG | C16564 |
| MeSH | D008757 |
| PubChem CID | 5364571 |
| RTECS number | SL8575000 |
| UNII | 2C905B6E0N |
| UN number | UN3082 |
| CompTox Dashboard (EPA) | Methyl Nonadecanoate CompTox Dashboard (EPA) string: `DTXSID3020688` |
| Properties | |
| Chemical formula | C20H40O2 |
| Molar mass | 326.572 g/mol |
| Appearance | Colorless liquid |
| Odor | mild |
| Density | 0.865 g/mL at 25 °C(lit.) |
| Solubility in water | insoluble |
| log P | 7.49 |
| Vapor pressure | 0.00151 mmHg at 25°C |
| Acidity (pKa) | pKa ≈ 24 (estimated, α-proton) |
| Magnetic susceptibility (χ) | -7.72e-6 cm^3/mol |
| Refractive index (nD) | 1.4340 |
| Viscosity | 5.4 mPa·s (40 °C) |
| Dipole moment | 3.58 D |
| Thermochemistry | |
| Std molar entropy (S⦵298) | 597.7 J·mol⁻¹·K⁻¹ |
| Std enthalpy of formation (ΔfH⦵298) | -629.0 kJ/mol |
| Std enthalpy of combustion (ΔcH⦵298) | -12020.8 kJ/mol |
| Pharmacology | |
| ATC code | No ATC code |
| Hazards | |
| Main hazards | May cause respiratory irritation. |
| GHS labelling | No GHS labelling. |
| Pictograms | GHS07 |
| Signal word | Warning |
| Hazard statements | H319: Causes serious eye irritation. |
| Precautionary statements | Wash thoroughly after handling. If skin irritation occurs: Get medical advice/attention. |
| NFPA 704 (fire diamond) | 1-1-0 |
| Flash point | > 163 °C |
| Autoignition temperature | “390 °C” |
| PEL (Permissible) | Not established |
| REL (Recommended) | 50 mg/L |
| Related compounds | |
| Related compounds |
Nonadecanoic acid Nonadecanoyl chloride Ethyl nonadecanoate Propyl nonadecanoate Methyl stearate |
