Chemists first brought aldehydes into the synthetic fragrance world at the turn of the twentieth century, when pioneering perfumers wanted to keep their formulas fresh, crisp, and unique. Aldehyde C-11 Undecylic didn’t waste much time making a big impression. It arrived amid a rush to bottle the clean, soapy notes once only found after a wash with real soap and water. Labs working in Europe and North America proved eager to harness this molecule’s long, slightly waxy chain, stretching far beyond the reach of simpler, volatile aldehydes. Unlike the short-chain aldehydes—think formaldehyde and acetaldehyde, which come with irritation and notorious sharpness—C-11 struck a balance. It provided a lift, an aura of freshness, but with a soft edge and a sense of something persistent beneath. Perfumers have never really let go of it, always finding space for it in classics and modern blends alike.
All around the world, you can spot Aldehyde C-11 Undecylic in cleaning products, air fresheners, shampoos, and, above all, in perfumes that lean on bright, long-lasting character. This compound came to stand as a staple ingredient thanks to its greasy-green scent profile—slightly citrusy, with a hint of something soapy and metallic. Not many molecules can pull off sharpness and richness at the same time. Even with the explosion of new synthetic tools, brands still rely on C-11 for its power to carry and extend lighter floral notes. It works behind the scenes, stretching out the space in a fragrance, almost like the sun’s warmth raising a fresh scent from cotton left out to dry.
C-11 Undecylic aldehyde appears as a pale yellow to colorless liquid at room temperature. It doesn’t dissolve well in water but finds itself right at home in alcohol and oils, which fits perfectly with how perfumers and chemists handle it. As an 11-carbon straight-chain molecule, it strikes a strong middle ground—not so short that it vanishes in a flash, not so long that it turns oily or heavy. At room temperature, its vapor pressure and volatility let it escape into the air at a steady pace. It holds onto that signature aldehydic tang: strong, fatty, and reminiscent of wax or even cucumber peel. With a boiling point that drifts above 230°C and a melting point well below freezing, it stays liquid in most working environments, lending itself to ease of handling and blending.
Industry standards call for high purity, generally above 95%, to prevent contamination that could skew a product’s scent or safety. Labs and suppliers label it with synonyms like Undecanal or n-Undecanal, pointing to its place among the family of straight-chain aldehydes. Chemists jot down CAS Registry Number 112-44-7 to keep records clea,r and regulators look for labeling that highlights both concentration and specific batch origins. Packaging tends to stick with strong, leak-proof materials, especially since aldehydes, over time, can react with light or air. The fragrance world cares a lot about traceability and transparency, making batch documentation and ingredient disclosure a regular practice.
Industrial-scale synthesis usually starts with natural or plant-based fatty acids like undecylenic acid or lauric acid, commonly sourced from castor oil or coconut oil. These fatty acids get reduced and then oxidized through targeted chemical steps, producing the perfect length carbon chain with a terminal aldehyde. Sometimes, industries take the alcohol route, oxidizing 1-undecanol into undecanal using controlled reagents like pyridinium chlorochromate or modern, greener catalysts. The biggest challenges often involve choosing efficient, low-waste processes, since older oxidation routes relied on heavy metals and produced waste that raised environmental and worker health concerns. Today, pressure to green these syntheses has nudged chemists toward cleaner, recyclable catalytic systems and process intensification techniques.
The aldehyde group at the end of the undecyl chain gives this molecule both reactivity and versatility. It reacts eagerly with nucleophiles and oxidizing agents—turning into an undecylic acid or being reduced to the corresponding alcohol, undecanol. In perfumery, this chemical agility matters for delivering boosters or modifiers: chemists produce derivatives or chain-branched molecules that anchor a scent differently or bump up tenacity. Methoxylation, acetalization, or chain extension with unsaturated groups produces new variations that expand the olfactory palette. Some research communities keep exploring modifications that combine undecanal with other functional groups, in the hunt for the next big breakthrough for long-lasting freshness or novel notes.
Industry veterans know this material by an impressive roll call: Aldehyde C-11, n-Undecanal, Undecylic aldehyde, and in technical circles, 1-Undecanal or Hendecanal. Over the decades, fragrance houses have included it on ingredient panels under trade brand names, simplified names, or in code systems familiar only to the most committed blenders. Sometimes it appears in literature as Undecylaldehyde, especially outside of perfumery, or referenced in older regulatory documents as UN 2057, connecting it back to shipping and hazard communication rules.
Safe handling of C-11 means controlling airborne exposure, especially during blending or bottling, since aldehydes as a group can provoke irritation and headaches at higher levels. Regulators in the European Union and North America both keep a close eye on allowable concentrations, especially in consumer goods like air sprays or laundry products. Workers suit up with gloves, splash goggles, and, in larger operations, work behind proper fume hoods or with local exhaust. Spills demand quick cleaning and proper waste management, since residues can slowly degrade, pick up foul odors, or, in rare cases, pose a fire hazard. Training programs for chemical handlers focus on first aid, spill containment, and thorough equipment cleaning, since aldehydes have a knack for sticking to surfaces and hanging on to their smell. Ingredient listings, required on retail products in many countries, have brought more transparency to consumers, who lean on databases like the European Commission’s CosIng or U.S. EWG Skin Deep to make informed choices.
Few molecules have traveled so widely or shaped so many daily routines. Perfumers still see it as a backbone of key aldehydic florals, ocean-inspired creations, and clean cotton blends. Personal care producers use it to sharpen the scent of dish liquids, fabric softeners, and even deodorants. Because it lingers, without turning sour, it reliably carries the “fresh-washed” signal in detergents and room sprays. The food industry keeps its use limited and tightly regulated, but it sometimes surfaces as a flavor agent in trace amounts to mimic citrus skins or to give berry blends an extra jolt. Packaging designers and product developers value its low melting point and ease of dilution—it's a building block that doesn’t hog space, code, or budget.
Scientific groups and fragrance houses alike pour effort into getting more out of C-11—making it stronger, safer, or more sustainable. Recent publications have explored biocatalytic production routes, using enzymes from bacteria or yeast to build up the aldehyde step-by-step, sidestepping petrochemical starting materials. Others push for continuous flow synthesis, cutting down process time with tiny reactors and finely tuned catalysts to lower waste output. Analytical labs monitor purity, testing for trace contaminants or possible byproducts that could bother sensitive noses or skin. Industry watchdogs, academic labs, and sustainability groups all press for lifecycle assessments to spot hotspots for energy use or emissions. Across the supply chain, the pressure stays high to keep processes clean, ethical, and ahead of shifting regulations.
Toxicologists have clocked eye, skin, and respiratory irritation from even modest doses, especially with repeated or careless handling. Animal studies tend to show low acute toxicity, but chronic exposure at high concentrations causes concern, particularly in poorly ventilated settings. Test panels from dermatology clinics register both irritation and rare cases of allergic reaction, pushing consumer safety bodies to demand low upper limits in finished products. The compound tends not to build up in tissue and doesn’t show mutagenic or carcinogenic results at workplace levels, but safety data gets updated as more studies pile up. Food regulators stick with a few parts per million, usually in imitation flavors or limited-use technical settings, and require the signature “flavoring agent” label wherever it slips into snacks or sodas. Ongoing monitoring looks at breakdown products in the air or water, since neighboring aldehydes have picked up scrutiny for longer-term health and environmental risks.
The future seems tied to two horse races: keeping up with demand for real, honest-to-goodness freshness in fragranced goods, and cutting down waste or health risks to the lowest numbers possible. The shift to biosourced feedstocks might reshape how C-11 gets to market, with precision fermentation or enzyme-based factories bringing the price tag down and improving public trust. Regulatory bodies look poised to squeeze down allowable concentrations in children’s products or keep tracing new exposure pathways through indoor air and water. R&D teams lean into mild, energy-light chemistry, eager to keep performance high but make loading rates lower—especially as younger generations press for full ingredient disclosure and traceable supply chains. Perfumery insiders keep reinventing how and where C-11 fits into olfactory design, always searching for new partnerships with woody, fruity, or marine notes. In my own experience of scanning product labels and helping chemists solve application headaches, Aldehyde C-11 stands out as a case study in balancing heritage with modern change. This single molecule keeps showing how one good idea in scent chemistry can stick around for over a century—always meeting new demand, new rules, and new definitions of safety and sustainability.
Aldehyde C-11 Undecylic doesn’t just float in chemistry sets. This molecule plays a key role wherever the world of fragrance needs a touch of style that feels clean, airy, and somehow fresh and complex at the same time. Step into a perfumer’s lab, or even take a whiff at a high-end cosmetics counter, and you’ll probably pick up its subtle, waxy-green whisper. It delivers both a hint of citrus and a trace of soapy crispness—a combo few other ingredients can manage.
Spray a classic perfume like Chanel No. 5 or lift the cap off a fancy shampoo, and that shimmery, almost ozone-like top note? Aldehyde C-11 Undecylic often pulls the strings behind that impression. Some call it a “sparkle agent.” Behind these sparkles stands a long tradition, with perfumers dating back to the early 20th century using aldehydes to push past the simple florals and let a scent sparkle well above its expected weight. That signature edge helped shape modern fragrance as we know it.
The molecule does its job thanks to its unique chain of eleven carbon atoms and an aldehyde group. This combination influences how it interacts with olfactory receptors, making it a favorite in perfume compositions. Its impact spreads beyond fine fragrance: plenty of soaps, lotions, and detergents use it to punch up the clean feeling. Next time a detergent’s aroma brings a smile, chances are you’re smelling the legacy of molecules like this. If you grew up with that “just-washed” smell around the house, aldehyde C-11 Undecylic has probably visited your nose more than you think.
Regulations keep things in check. Investigations by the International Fragrance Association consider how people react to this ingredient. Allergies, sensitivities, and environmental questions always rise when synthetic molecules show up in so many products. Any reputable manufacturer checks guidelines, follows recommended concentrations, and keeps consumers in mind. Studies and skin patch tests drive limits, not just tradition or guesswork. That helps build both trust and safety, from luxury perfume shops to family laundry routines.
Concerns do surface. Some folks want fewer synthetics on their skin, or they wonder where chemicals go once they leave the drain. Any discussion about ingredients usually uncovers fears tied to long, complex names. The call for transparency has grown over time. People want to know what’s inside, what it does, and whether it’s safe. Manufacturers face pressure to explain choices and invest in cleaner, safer alternatives where possible.
Solutions build on research. Sustainable methods for producing aldehydes continue finding traction. Green chemistry offers routes that cut waste and pollution. Perfumers experiment with bio-based versions sourced from renewable materials. More information on product labels would help people make informed choices—especially for those with family members sensitive to certain compounds. The push for open communication pays off, both for industry credibility and for supporting confidence among shoppers.
It’s easy to overlook ingredients like aldehyde C-11 Undecylic, even if they shape much of our sensory world. Everyone deserves to understand what’s at play each time they reach for a bottle, swipe on lotion, or enjoy a clean-smelling shirt. The power of this molecule reminds us: chemistry and daily life are anything but separate, and every fresh note owes its sparkle to a science that’s worth knowing—and questioning—together.
Open a bottle of Aldehyde C-11 Undecylic and you meet a scent that could easily confuse your senses. The first thing that hits is a crisp, almost metallic edge, like fresh laundry drying in the sun. There’s a clear clean vibe, but not sharp or medicinal. Think pressed linen with a twist of green stem, like walking by the laundry line that flaps beside a wild hedge. I’ve handled hundreds of fragrance ingredients, and even among the aldehydes, C-11 Undecylic holds its own story.
Aldehydes get all sorts of talk in perfumery circles. People love to mention Chanel No.5 whenever aldehydes come up, but C-11 Undecylic tells a slightly different tale. There’s a faint hint of citrus, but it skips the sharpness of lemon or the sweetness of orange. Peel an unripe grapefruit and you get closer to its impression—green, waxy, but with a punch that pushes through the air. No one describes it as cozy or warm. Instead, it’s more likely to remind folks of sea spray or a spring garden after rain, open and a bit wild. Aldehyde C-11 seems to stretch far, leaving a lingering airy trail that freshens a space in a way few other raw materials can.
My first time smelling C-11 Undecylic left me picturing freshly washed cotton shirts, but then the green part crept in. In my years working with perfumers, many describe this material as the backbone of the famous “soapy” note. Eggs and breakfast have nothing to do with this one—picture a breeze blowing through clean sheets strung outside by a dewy garden. Some people shy away because it smells too "clean." For others, it feels like nostalgia—the smell you catch after storm clouds pass, or the air just outside a florist’s door.
Perfume isn’t the only place C-11 Undecylic makes itself at home. Detergents and household sprays owe some of their brightness and cleanliness to this ingredient. Why use it? Because plain floral or citrus notes can turn heavy, especially in humid air, but a sprinkle of C-11 Undecylic keeps things feeling lively without the cloying weight. It boosts the strength of other fragrant notes and makes everything last longer. Data from fragrance industry reports point out that aldehydes like C-11 Undecylic hold a steady market because household and personal care brands want that sense of purity in every sniff. Safety profiles, based on research from reputable sources like International Fragrance Association (IFRA), confirm that C-11 Undecylic passes common safety thresholds in approved concentrations.
The challenge comes with balance. Too much and your nose reels; too little and the freshness fizzles out. From a formulator’s perspective, using ingredients like this means walking a line—one that bridges science and memory. Some natural scents, like fresh-cut grass and ozonic air, share part of C-11 Undecylic’s DNA. Synthetic molecules like this one allow brands to deliver that brisk cleanliness reliably and at scale.
Clean now means more than “not dirty.” It’s an experience we want from fabric, from body care, from the room where we live and work. That experience often relies on molecules that mimic nature’s best moments. By learning how familiar notes like the ones from Aldehyde C-11 Undecylic interact with our memories, the fragrance world can keep moving forward—offering freshness, comfort, and reliability in every bottle and bar of soap.
Aldehyde C-11 Undecylic comes up mostly in the world of perfumery. This synthetic molecule forms the backbone of certain fragrances. The clean, soapy note it brings finds a spot in everything from laundry detergents to fancy perfumes. It sounds like a background player, but its role turns important for anyone thinking about daily skin contact.
Start with facts: the International Fragrance Association (IFRA) manages ingredient safety in scents used for personal care. Aldehyde C-11 shows up in their guidelines. They set use limits in leave-on and rinse-off products. If something gets that kind of attention, it means research has picked up occasional issues.
Scientific studies suggest most people won’t get a rash or irritation from typical use concentrations—those in commercial soaps or shampoos. But aldehydes as a class can trigger contact allergies for sensitive skin. Some European safety committees point out that aldehydes, including C-11, become potential allergens above certain concentrations.
Dermatology clinics keep patch testing aldehydes, especially in patients dealing with persistent eczema or unexplained reactions. A small slice of test subjects will react, but the vast majority show no response. The few who do react wind up avoiding products containing long-chain aldehydes across the board. For the rest of us, the risk feels low, though not zero.
Anyone who uses scented lotions or deodorants has probably had some contact with Aldehyde C-11. Fragrance labeling doesn’t spell out every ingredient, so people with sensitive skin face a real information gap. This gap crops up at the drugstore: product labels list “fragrance” as a catch-all, not breaking down every molecule inside.
Dermatologists recommend caution for anyone with fragrance allergies, eczema, or a history of skin sensitivity. If your skin feels calm with unscented, hypoallergenic products, there’s no need to stir the pot. On the other hand, people who’ve never had trouble with scented items have little reason to worry about minute amounts of Aldehyde C-11.
Allergic skin reactions to fragrances land people in doctor’s offices each year. A strong patch test reaction changes shopping habits overnight. For the cautious, picking unscented or “fragrance-free” labels makes life simpler. Reading up on brand transparency and ingredient listing can offer some peace of mind.
Companies in the EU and US face pressure to keep aldehyde concentrations low. Health authorities keep pushing for clearer labeling practices. Until more rules come into force, people who want to avoid certain fragrance molecules must stick to trusted brands or consult dermatologists. Professionals may scan ingredient lists for suspect molecules, especially if someone develops red, itchy skin after switching products.
It helps to stay aware of personal skin reactions. Most people try out new lotions or perfumes on a small patch of skin first. Any stinging, itching, or rash calls for a product switch. Anyone prone to skin allergies should talk with their doctor if they suspect fragrance sensitivity.
Information remains the most useful defense. People can check brand policies, talk with doctors, and lean on patch tests if needed. Knowledge about Aldehyde C-11’s safety profile keeps shoppers in control, especially when choosing daily products for themselves or their families.
I remember that first whiff of a classic perfume, the one that lingered even after leaving the store. Back then, I never thought much about what made those scents distinct and memorable. Over time, I learned many unique fragrances rest on a handful of molecules, and among them sits Aldehyde C-11 Undecylic. Its chemical formula is C11H22O, making it a simple but powerful building block for many scents.
What makes C-11 Undecylic aldehyde stand out comes down to its structure: eleven carbon atoms form a chain, with a terminal CHO group that gives it that unmistakable “aldehydic” edge. This molecule delivers a clean, slightly soapy note that’s both sharp and smooth at the same time—a tricky balance to hit in perfumery.
Aldehyde C-11 Undecylic (undecanal) shows up in more places than just designer fragrance bottles. It occurs in trace amounts in certain natural sources—think of citrus peels, coriander, and even those fresh, fatty undertones in some dairy products. The perfume world started using it seriously back in the 1920s, at a time when synthetic molecules were shaking up old ways of making scent. With fragrances shifting from natural extracts to molecules like this, the possibilities seemed endless for both perfumers and fans of fine fragrance.
The molecule’s formula—C11H22O—might look bare-bones, but this simple code hides years of chemistry research, debate, and even some controversy. Discussions about synthetics in fragrances still pop up every time a perfume launches. I recall consumers debating if lab-made scents could ever rival a rose plucked fresh from its bush. Yet, molecules like C-11 Undecylic have proven over time that carefully crafted chemistry creates experiences impossible to extract from nature alone.
I’ve talked to perfumers who say that without aldehydes, many beloved scents would lose their “spark.” C-11 Undecylic brings brightness, helps blend heavier, oily notes, and adds a layer of crispness. It’s responsible for that “dress shirt fresh from the laundry” feeling in many aldehydic perfumes. Beyond perfume, this aldehyde helps produce certain flavors and aromas in foods—industry uses it in minuscule doses when crafting flavors that taste like tangerine, green apple, or clean cucumber.
Safety keeps coming up in any conversation about synthetic molecules. The International Fragrance Association (IFRA) evaluates each ingredient based on new toxicity and allergy research. C-11 Undecylic passes standard tests for safe use at normal concentrations. Still, as with many molecules in food or personal care, keeping an eye on ongoing research ensures formulas stay both effective and safe.
Modern consumers demand to know what’s in their products, and rightfully so. Brands responding with better labeling and more education help everyone. Perfumers who share information openly about ingredients like C-11 Undecylic gain more trust. Clear communication builds a bridge between science, tradition, and creativity. Thoughtful choices, grounded in proven research, pave the way for innovative fragrances that respect both heritage and health—the best of both worlds.
Aldehyde C-11 Undecylic shows up on ingredient lists for some of the world’s most recognizable perfumes and flavors. Opening a drum of this compound, you’re greeted by a fresh, soapy aroma that’s hard to forget—especially if you’ve ever toured a perfumery lab. People tend to forget that this material, while familiar, poses hazards often overlooked in busy workrooms. Working with ingredient chemicals during my time in a small fragrance factory taught me early: taking shortcuts in storage or handling only leads to trouble.
Aldehyde C-11 Undecylic won’t put up with sloppy storage. I’ve seen a half-used container sitting near a sunny window, and it ended up with yellow streaks and a sour off-note. Warmth speeds up oxidation and triggers the aldehyde’s instinct to turn bad—chemically speaking. The best habit is simple: store it in a cool, dark spot away from sunlight and heat sources. Think along the lines of a cellar or a temperature-controlled cabinet. Stainless steel or amber glass bottles, tightly sealed, do well. Polyethylene and HDPE drums also work, but only if the seal remains secure.
Humidity and oxygen are friends to spoilage. Letting air into the bottle—even just for a few moments—means gradual degradation. Drawing from a big drum, always transfer what you need to a smaller airtight bottle for daily use. This method saves money and cuts down on waste from spoiled product. All the rules from food safety—clean containers, low temperatures, low light—apply just as well to chemicals like this one.
Every manual job I’ve done in fragrance or food involves a checklist: gloves, goggles, lab coat. Aldehyde C-11 Undecylic irritates skin and eyes quickly, so even brief contact brings trouble. You may not feel the effects until hours after exposure. Splashing just a drop could mean an ER visit if it lands wrong, so don’t skip the basic kit. Ventilated hoods make a difference. During a busy blend session, vapors build up—giving you a harsh headache to remember what you forgot. If you notice a sharp odor lingering near your workspace, pause and check the air.
Spills do happen, and in real life, mopping them up means fighting a sticky, persistent smell. Absorbent pads help, but proper disposal keeps your facility safe and legal. Even small amounts of residue, over time, corrode surfaces and taint other aromatic materials stored nearby. Separate storage is every bit as important as good ventilation, especially for perfumers juggling dozens of competing scents.
People often take short cuts in labs pressed for time. Skipping a hand wash or reusing gloves seems harmless in the moment. In reality, building strong routines saves pain and money. Training matters most with temp workers or in high-turnover warehouses. Every new batch should come with a quick refresher: where the fire extinguisher sits, how to clean a spill, how to double-check container seals. Even seasoned staff need reminders at the start of a busy season.
Today the science feels clear: aldehydes don’t forgive poor handling. Data from workplace safety boards (like OSHA and ECHA) spell out the risks, but hands-on experience underscores the point. Facilities with the best track records don’t rely on luck. They invest in training, maintenance, and the right storage infrastructure.
Simple, consistent care keeps your product in top shape and your team healthy. Every strong-smelling bottle tucked away in a cool, dark space proves there’s no substitute for building good habits—and sticking with them even on the busiest day.
| Names | |
| Preferred IUPAC name | undecanal |
| Other names |
Undecanal
Undecyl aldehyde Hendecanal |
| Pronunciation | /ˈældɪhaɪd siː ɪˈlɛvən ʌnˈdɛsɪlɪk/ |
| Identifiers | |
| CAS Number | ## 112-45-8 |
| 3D model (JSmol) | `"CCCCCCCCCCC=O"` |
| Beilstein Reference | 1720799 |
| ChEBI | CHEBI:75460 |
| ChEMBL | CHEBI:77738 |
| ChemSpider | 21584 |
| DrugBank | DB14167 |
| ECHA InfoCard | 03e0739e-4d38-4244-b2be-7ab6a482d297 |
| EC Number | 203-967-7 |
| Gmelin Reference | 59534 |
| KEGG | C08024 |
| MeSH | D000976 |
| PubChem CID | 8185 |
| RTECS number | ZH7525000 |
| UNII | Z22L379A5X |
| UN number | UN 1993 |
| Properties | |
| Chemical formula | C11H22O |
| Molar mass | 184.29 g/mol |
| Appearance | Clear pale yellow liquid |
| Odor | Fatty, citrus, waxy, green |
| Density | 0.839 g/cm3 |
| Solubility in water | Insoluble |
| log P | 3.8 |
| Vapor pressure | 0.03 hPa (25 °C) |
| Acidity (pKa) | 16.66 |
| Basicity (pKb) | pKb: 7.18 |
| Magnetic susceptibility (χ) | -7.72e-6 cm³/mol |
| Refractive index (nD) | 1.4390 |
| Viscosity | 210 mPa·s (20 °C) |
| Dipole moment | 2.77 D |
| Thermochemistry | |
| Std molar entropy (S⦵298) | 349.5 J·mol⁻¹·K⁻¹ |
| Std enthalpy of formation (ΔfH⦵298) | -285.9 kJ/mol |
| Std enthalpy of combustion (ΔcH⦵298) | -6897.2 kJ/mol |
| Pharmacology | |
| ATC code | D01AE16 |
| Hazards | |
| Main hazards | Causes skin irritation. Causes serious eye irritation. Harmful to aquatic life with long lasting effects. |
| GHS labelling | GHS07, GHS09 |
| Pictograms | GHS05,GHS07 |
| Signal word | Warning |
| Hazard statements | H315, H317, H319 |
| Precautionary statements | P210, P233, P240, P241, P242, P243, P261, P264, P271, P272, P273, P280, P301+P310, P302+P352, P303+P361+P353, P305+P351+P338, P308+P311, P312, P321, P330, P333+P313, P362+P364, P370+P378, P403+P235, P405, P501 |
| NFPA 704 (fire diamond) | 1-1-0-0 |
| Flash point | > 110°C |
| Autoignition temperature | 170 °C |
| Lethal dose or concentration | LD50 (oral, rat): 15100 mg/kg |
| LD50 (median dose) | LD50 (median dose): 4600 mg/kg (oral, rat) |
| NIOSH | HE2650000 |
| PEL (Permissible) | PEL (Permissible Exposure Limit) for Aldehyde C-11 Undecylic: Not Established |
| REL (Recommended) | 1.0 ppm |
| IDLH (Immediate danger) | Unknown |
| Related compounds | |
| Related compounds |
Aldehyde C-10 Decylic
Aldehyde C-12 Lauric Aldehyde C-8 Octylic Aldehyde C-9 Nonilic |
