© 2026 Nanjing Finechem Holdings Co., Ltd,
All Right Reserved
Cinnamaldehyde dates back to centuries-old spice markets, where cinnamon bark found its way into not just the kitchens but also ancient remedies and perfumes. Early chemists figured out how to extract the richest oils from that bark, discovering trans-cinnamaldehyde as the compound behind cinnamon’s recognizable aroma and flavor. Over time, synthetic approaches stepped in. Researchers saw the value in making this molecule more available with consistency, so they moved past basic distillation and leaned into chemical synthesis from natural sources. My own brush with the subject began in college labs, where instructors often used cinnamon oil to teach extraction. There’s something memorable about walking through hallways where the air smells like a bakery, yet the conversation is all chemistry.
Trans-cinnamaldehyde now draws attention well beyond the world of flavor. This molecule carries commercial weight with its distinct spicy-sweet character, making it a go-to for flavorings, fragrances, and even health products. It naturally dominates the essential oil from cinnamon, especially Cinnamomum cassia. Industrial production and formulation push its reach, allowing both large-scale food manufacturers and fine fragrance designers to rely on it for recognizable warmth and bite. Synthetic sources mean supply meets demand, but the best qualities still come from pure, well-handled cinnamon. And with interest from aromatherapists, researchers, and even those in agriculture, the story keeps getting broader.
At room temperature, trans-cinnamaldehyde takes on the form of a pale yellow, oily liquid, heavy with a distinct, lingering odor. Its chemical structure—a phenyl ring hooked to an unsaturated carbonyl group—offers both stability and intriguing reactivity. An untrained eye sees a clear, mobile liquid; a chemist sees potential. It sits at a middle ground for volatility: not as fleeting as some essential oils, not as stubborn as most resins. The compound dissolves in most organic solvents, showing flexibility for those mixing it into food, perfumes, or industrial products. Its double bond provides a site for further reactions or modifications, making it a bit of a playground for researchers—especially those searching for novel derivatives.
Commercially traded trans-cinnamaldehyde often comes labeled with purity estimates, usually above 98 percent for use in food and perfumery. Chemical suppliers must indicate origin—natural or synthetic—as these details matter for allergen statements and regulatory compliance. Labels often bear hazard information since the compound can be irritating. Lab workers, food processors, and manufacturers alike always pay attention to handling notes: keep it cool, keep it dry, avoid strong oxidizers. I’ve seen more than one food technologist turn a wary eye to the packaging, double-checking for certifications and batch numbers before blending it into new product trials. Regulatory agencies shape these processes, and the layers of paperwork provide some confidence to those working with the substance.
Decades ago, the only real option involved steam distillation of cinnamon bark, which gave oil rich in trans-cinnamaldehyde. Today, synthetic strategies often begin with benzaldehyde and acetaldehyde in an aldol condensation reaction. These methods crank out higher volumes, more consistent quality, and cost savings. Some food purists argue that natural extraction gives a superior product, and high-end perfumers echo those same calls. Extraction yields rely on quality of the source, conditions, and timing. Efforts to streamline these steps continue, as energy and sustainability pressures grow louder year by year.
The molecule’s chemistry excites synthetic minds. That double bond and carbonyl group together set trans-cinnamaldehyde up for a range of reactions: hydrogenation smooths out the double bond to produce hydrocinnamaldehyde, while oxidation swings it to cinnamic acid. Derivatives take shape through reduction, halogenation, and other tweaks. In university labs, I’ve watched students transform simple oils into a catalog of interesting compounds, each with its specific uses and hazards. While this offers up a menu of chemical possibilities, every modification brings tighter oversight because of potential toxicity or unexpected properties. The system demands respect—a small misstep in the lab spells trouble.
Trans-cinnamaldehyde collects alternate names as it moves between chemical supply houses, regulatory agencies, and product labels. It shows up as (E)-Cinnamaldehyde, cinnamic aldehyde, and even 3-phenyl-2-propenal. In perfume and food industries, the word cinnamon oil sometimes crops up, though real cinnamon oil always contains other related molecules. Sometimes, generic names lead to confusion, especially for professionals working across international borders or dealing with translated documents. Chemists and regulators chase clarity, but synonyms linger—something as simple as a label can hold the potential for headaches if misunderstood.
Handling trans-cinnamaldehyde means balancing benefit against risk. The spicy oil seems harmless enough by smell, but in concentrated form, it brings skin and respiratory irritation. Workplace guidelines force employees to wear gloves and work under hoods. Food-grade material must clear tough screening for purity, microbial content, and cross-contamination. Companies lean on hazard statements, proper storage, and robust documentation. Accidents happen—a small spill smells pleasant at first but can tickle noses and burn eyes before long. People handling this compound also respect local disposal rules; even natural compounds can turn problematic if dumped into water supplies or left exposed. Producers and users check batches for adulterants, as bad actors sometimes stretch supplies with lower-grade or unrelated chemicals, raising the stakes for both safety and reliability.
Trans-cinnamaldehyde sustains a busy life across sectors. Food producers rely on it to flavor baked treats, confectionery, and drinks—though some brands claim “all-natural” status by demanding only oil pulled from the bark. Its weighty aroma pulls its share in perfumes, air fresheners, and even specialty candles. The agricultural sector, less obvious to outsiders, finds value in the compound’s antimicrobial and insecticidal properties; researchers see promise in keeping stored grains safer using brushes or sprays containing the molecule in dilute forms. Some small-scale organic farmers experiment with these solutions, searching for alternatives to harsh synthetic pesticides. Pharmacology continues to investigate its limits: animal models show promise against bacteria and inflammation, but translation to human drugs faces complexity in both science and regulation.
Scientists keep chasing new angles. Work on trans-cinnamaldehyde looks at not just flavor but its role in human health and food preservation. There’s mounting evidence it can inhibit bacterial growth—though few agree on effective dosages or long-term safety when used at scale. Formulators wrestle with stability, as exposure to air and light can transform cinnamaldehyde into less pleasant byproducts. Nanotechnology researchers try to wrap the molecule in carriers, seeking longer shelf life or targeted delivery in food and pharma. On the environmental side, attention shifts to sustainable sources. Projects in developing economies focus on maximizing yields from cinnamon crops, giving farmers decent incomes while ensuring quality oil. Big breakthroughs remain rare, but every year inches the world toward new applications or more efficient production.
No chemical gets a free pass, and trans-cinnamaldehyde draws its share of scrutiny. Recent animal studies point toward safe use at low concentrations, matching what most flavoring regulators suggest. The compound can irritate skin and mucous membranes—something occupational health officers stress with real-world examples. Reports also chronicle allergic responses for some consumers, usually through direct contact or high-concentration exposure. Long-term studies get complicated; lab animals react differently from people, and finding a straight path from rodent data to daily human use is a constant stumbling block. Toxicologists remind food and fragrance innovators to stay below suggested thresholds. Regular risk assessments and updates ensure that as new information surfaces, companies stay responsible in their processes.
While trans-cinnamaldehyde has deep roots, its future keeps expanding. Work on targeted pesticide replacements might ease the strain from harsher chemicals, forming bridges between sustainability and productivity for farmers. Smart packaging concepts depend on antimicrobial vapors from the compound to keep foods fresh longer. Gourmet food scenes, always on the hunt for signature flavors, won’t let it go any time soon. As research teases apart the structure-activity relationship, pharmaceutical teams want new drug candidates, but regulatory hurdles mean slow progress from lab to medicine cabinet. The most promising path sits in responsible stewardship—producers and users must balance tradition, safety, and scientific curiosity while driving the molecule’s next chapter. Years from now, chances are this simple-sounding aldehyde will surprise with uses very few foresee today.
Every time I walk past a bakery or spice shop, that sweet, spicy smell of cinnamon brings back memories. Underneath that warmth lies trans-Cinnamaldehyde, the molecule that gives cinnamon its punch. This compound has slipped far beyond kitchen shelves and into everyday products people rarely associate with spice.
Trans-Cinnamaldehyde works as a food flavoring, especially in chewing gum, drinks, and candy. Its distinct, spicy note stands strong against other artificial flavors. The FDA has given it the green light as a safe food additive. More than just a taste booster, it helps food stay fresh for longer by acting against bacteria and fungi. Researchers at Purdue University found that the compound can reduce E. coli and Salmonella on produce. Mishandled food often causes stomach bugs, and ingredients like this could help reduce risks.
My interest in essential oils led me to discover that trans-Cinnamaldehyde pops up in natural cleaning products. Its antimicrobial properties do more than give kitchens a holiday scent. Cleaning solutions and even some toothpastes use this compound to keep bacteria in check. According to a 2020 review in Frontiers in Microbiology, this compound damages bacterial cell walls, making them easier to kill. Hospitals and care homes face constant threats from germs, and natural options can be handy where synthetic products cause allergies or resistance.
Trans-Cinnamaldehyde found its way into livestock feed. After learning about farmers dealing with sick animals on crowded farms, I learned that antibiotics aren't always the best answer, especially as bacteria grow resistant. Studies published by animal science journals point out that livestock eating feed with this compound can have fewer gut infections and grow better than those relying on traditional antibiotics. In an age where antibiotic resistance threatens both farm animals and humans, natural alternatives buy us precious time. Reducing overuse of antibiotics in farming strengthens the long-term game against resistant bugs.
Mosquitoes and ants can turn any picnic into a nightmare. Synthetic pesticides drive away bugs but pollute water and kill helpful insects. Trans-Cinnamaldehyde already features in some eco-friendly insect repellents and sprays. In my garden, homemade repellents mixing cinnamon oil have fended off aphids and ants without harming bees. A study in the Journal of Agricultural and Food Chemistry shows that it disorients insect pests and even disrupts egg-laying, making it a natural ally for farmers and gardeners.
The shelf life of cosmetics, lotions, and soaps often shortens thanks to molds and bacteria. With less synthetic chemicals on store shelves, companies look for safer ways to block spoilage. Trans-Cinnamaldehyde fits here, keeping products clean without strong odors or harsh effects on skin. Users with sensitive skin can avoid common triggers found in harsher preservatives.
This single molecule earned its place in traditional spice cabinets and modern biotech labs. Researchers test it against plant diseases and even look at its possible anti-cancer effects. As more people ask for plant-based, safer products, the uses for trans-Cinnamaldehyde keep growing. Raising awareness among growers, cooks, and manufacturers can help us carve out new uses for this versatile compound while caring for health and the environment.
Step into a bakery or a spice market, and you might catch the sharp, sweet scent of cinnamon. That signature flavor owes much to trans-cinnamaldehyde, a compound found in cinnamon bark that gives it both its punch and aroma. Long before scientists named it or companies extracted it, people added cinnamon to food, drinks, and herbal remedies. Today, trans-cinnamaldehyde shows up in more than just spice jars. You’ll find it in gums, candies, even perfumes and cleaning sprays.
My experience with natural ingredients taught me to check what research and regulators say before trusting a trending additive. Food and Drug Administration scientists placed trans-cinnamaldehyde on their “Generally Recognized As Safe” (GRAS) list for use as a flavor in foods. The European Food Safety Authority and similar agencies looked at data from animal studies, lab research, and historical food use, then said small amounts don’t pose a health concern for most people. The Joint FAO/WHO Expert Committee on Food Additives agrees.
Let’s take a closer look at the numbers. Most foods have it in tiny quantities—much less than what the studies used to test for harm. According to the Flavor and Extract Manufacturers Association, people in the United States usually eat under one milligram per kilogram of body weight each day through foods like baked goods and sodas. In studies, side effects like irritated skin only turned up at much higher doses or with undiluted oils—not from normal eating.
No ingredient comes totally risk-free. People with allergies to cinnamon or similar spices sometimes react to even trace amounts of trans-cinnamaldehyde. Some reports show that cinnamon oil, especially in high concentrations, can cause oral irritation or burns if applied directly. Young children and some adults feel these effects more quickly. From my own time baking and making spice blends, I’ve seen friends sprinkle cinnamon liberally, only to end up coughing from the strong aroma—a reminder that more isn’t always better.
Long-term safety gets some attention, too. Animal studies used massive doses—far more than any human would ever consume—and didn’t find major toxic effects. Still, some research journals mention gaps, like lacking enough information on effects over many decades or with new forms like capsules or high-dose supplements. That points to the need for ongoing review as new products hit the shelves.
Manufacturers have a stake in keeping products consistent and reliable. They use quality controls to watch for contaminants and impurities, since natural extracts sometimes carry pesticide residues or heavy metals if the source isn’t clean. Food scientists run testing on batches to rule out unsafe concentrations.
For most people, sticking to the usual use of cinnamon in foods or drinks means the risk from trans-cinnamaldehyde stays low. If anyone faces allergies, sensitivities, or health conditions that raise concern, a healthcare provider can offer the right advice. Parents and childcare professionals need to keep pure cinnamon oils and extracts away from unsupervised kids, just like any concentrated flavoring.
The focus should stay on solid research and responsible use. Companies and regulators ought to keep monitoring scientific updates, especially since new forms of supplements and extracts keep showing up online. Consumers can pay attention to labels, ask questions about product sources, and enjoy real cinnamon flavors in moderation. Most kitchens and dining tables prove that natural flavors add joy and comfort—with a little knowledge, they stay safe as well.
trans-Cinnamaldehyde brings to mind the unmistakable scent of cinnamon. What surprises a lot of people is how strongly this compound shows up in daily life. Not only does it add flavor to baked goods and gums, it also has a hand in everything from perfumes to cleaning products. But the question crops up: where does the world actually find most of this powerful natural chemical?
Cinnamon trees, especially Cinnamomum verum and Cinnamomum cassia, act as the richest source for trans-Cinnamaldehyde. On cinnamon farms across Sri Lanka, Indonesia, and China, the bark is harvested, allowed to dry, and then gets steam-distilled. Most of the aromatic oil that comes out of this process owes its punch to trans-Cinnamaldehyde. Research highlights that cinnamon bark oil contains up to 90% trans-Cinnamaldehyde, far higher than any other natural source.
Some producers head for the leaves instead. These not only yield essential oils packed with the same compound, but they let farmers use more of the tree. This sustainable approach supports communities that depend on cinnamon as a cash crop.
I once visited a small spice market in Kandy, Sri Lanka. Farmers displayed bark shavings and vials of freshly distilled oils. Tasting the oils straight from the still tasted sweet and fiery, and the story was simple — whole families living off a tradition, extracting the oil that later lands in factories half a world away. Tracking each bottle’s trip from field to lab, I noticed how price, purity, and source traceability start to matter when the oil goes from a food ingredient to a fine chemical.
While nature provides most of the supply, not all trans-Cinnamaldehyde comes directly from trees. Chemical manufacturers create the compound through what’s called the Perkin reaction, using benzaldehyde and acetic anhydride. Laboratories rely on this approach when consistency is crucial, or crops fall short. Synthesized versions bring down costs, and offer a chemical makeup nearly identical to what you find in plant oil, but trained flavorists or perfumers can often sniff out the difference.
Market figures suggest that as flavor and perfume demand rises, the synthetic share isn’t going away. One study estimates over a third of the global supply used in large factories comes from labs rather than fields. This shift creates friction: smallholder farmers lose leverage, and some customers worry about potential trace solvents or environmental waste from chemical production.
Extracting and selling essential oils sounds romantic, but reality can be hard. Farmers in cinnamon-growing countries often face price swings, pests, and unpredictable weather. Growing cinnamon trees takes patience, and not every batch turns out with high oil content. Tools for testing purity, like gas chromatography, stay out of reach for small producers, so they rely on trusted buyers and traditional knowledge.
More groups are working to shorten the gap between farmer and expert user. Direct trade programs, certification for organic practices, and training on sustainable harvesting have started lifting returns for families that stick with tree crops. By focusing on transparency in sourcing, companies help buyers feel good about what ends up in a bakery or a bottle of perfume. As global curiosity for authentic flavors increases, tracing trans-Cinnamaldehyde right back to its tree roots feels more important than ever.
Cinnamon has been hanging around kitchens and medicine cabinets for ages. Dive a little deeper and you meet trans-Cinnamaldehyde — the main reason cinnamon gets its punchy aroma and unique bite. More than a kitchen staple, this compound tells a compelling story through research that links it to a range of health perks.
Not everyone knows how potent a stick of cinnamon can be against germs. trans-Cinnamaldehyde stands out for its fierce punch against harmful bacteria. Researchers published in Frontiers in Microbiology highlighted how it knocks out microbes like Escherichia coli and Staphylococcus aureus — the ones behind some of the nastiest foodborne illnesses and skin infections. It disrupts bacterial cell walls, ultimately finishing them off. This adds weight to the tradition of adding cinnamon to foods not just for taste, but to make meals safer without loading up on synthetic preservatives.
Those who live with rheumatoid arthritis or inflammatory gut conditions know the struggle of keeping swelling in check. Scientists have shown that trans-Cinnamaldehyde can help tamp down the body’s fire alarm bells, easing this swelling. In animal studies, like those published in Biochemical Pharmacology, it held back the very molecules (cytokines) that fan the flames of inflammation. This kind of finding could open doors for gentler daily management for those weaving through chronic pain.
We’re exposed to elements and habits that can speed up aging or even lead to disease, mostly through oxidative stress. It’s tough to dodge altogether, but trans-Cinnamaldehyde packs a pretty solid antioxidant punch. Experiments with human cells, described in Food and Chemical Toxicology, found that this compound steps up, fights damaging free radicals, and eases signs of cell stress.
Adding antioxidant-rich foods to your diet protects tissues from everyday wear and tear. Trans-Cinnamaldehyde’s activity makes cinnamon more than just a flavor, but part of a long-term approach to aging and wellness.
Some folks wrestle every day with wild swings in blood sugar and creeping waistlines. A growing pile of studies signal that trans-Cinnamaldehyde helps improve how bodies process glucose. Researchers tracking patients with type 2 diabetes watched their fasting blood sugar drop after steady cinnamon intake. Trans-Cinnamaldehyde helps cells respond better to insulin, making it easier to keep levels steady. This is no quick fix; nobody is ditching prescribed medication for cinnamon sticks, but boosting meals with cinnamon adds background support.
Taking trans-Cinnamaldehyde straight from the spice jar isn’t the full story. Research-grade versions are being shaped into dental products, natural food preservatives, and creams for minor skin annoyances. Most folks using cinnamon powder or sticks at home keep well within safe limits, but large doses might irritate, especially for people with sensitive stomachs.
I’ve noticed, even in my own kitchen, that swapping sugar for cinnamon-backed flavor eases a craving for sweets and feels a lot lighter. Tapping into what science knows, simple changes like adding cinnamon to oats, yogurt, or even savory stews can back up health goals.
Modern research continues to hunt for the right dosing and use cases, but keeping cinnamon in the daily lineup, whether in baking or steeped in teas, lands on the side of both flavor and function.
Trans-Cinnamaldehyde shows up in labs, factories, and at times, perfumery and flavor businesses. Most folks spot its sweet-spicy cinnamon aroma right away. Yet, its practical side has more to do with storage challenges than flavor. It’s not just a pretty scent—if left unprotected or under the wrong conditions, this substance can spoil and give off more than just a strong smell. The issue matters, as mishandling leads to safety risks and product waste.
I once worked in a formulation lab where a single forgotten bottle of trans-Cinnamaldehyde, left near a heat vent, started to change color within weeks. Heat exposure speeds up chemical degradation. If you keep this material around room temperature (around 20–25°C) and definitely below 30°C, the chance of spoilage goes down. Refrigeration helps if storage lasts months or years, although repeated warming and cooling cycles might create condensation inside containers. If humidity gets in, it can compromise purity.
Sealing always ranks high in my book. In my former lab, even a high-quality glass bottle led to trouble if the cap seal weakened over time. Stick with airtight glass or special plastic bottles—polyethylene and polypropylene show solid resistance to the compound, but some plastics end up stained or softened. The bottle lid needs an intact liner, usually Teflon or another chemical-resistant material. Don’t try to stretch budget with makeshift closures, as cinnamaldehyde’s volatile nature means it will find every little gap to escape or pull in moisture from the air.
A friend at a botanical extracts company once lost liters of product because someone left bottles on a sunny shelf. Light acts as a trigger for oxidation, and oxygen from air does the rest, turning bright, usable liquid into something murky and less effective. A dark glass bottle or, even better, a box or cabinet away from direct light makes a world of difference. Each time a container opens, air moves in, though, so it pays to divide bulk material into smaller portions that are only opened as needed.
Years ago, someone spilled cinnamaldehyde in a poorly ventilated storeroom. The whole building smelled like cinnamon for days. The stuff vaporizes quickly and lingers in the air. Store bottles in well-ventilated areas—locked chemical cabinets with vapor control help. For bulk storage, use something with secondary containment in case of leaks or breakage.
Gloves, splash goggles, and lab coats come standard whenever I handle this material. Skin contact burns and eye irritation aren’t rare stories in chemical safety logs. Label every bottle clearly, not just for tracking but also so nobody mistakes the contents. Local regulations may dictate extra precautions. Fire codes, for example, often require flammable liquids to stay far from ignition sources.
For inventory lasting over a year, mark fill dates on the label, track opening times, and rotate stock so that older material doesn’t linger and degrade. If the batch develops cloudiness or a change in scent, test its purity before use.
The small details make big safety differences. A simple routine—checking seals, keeping bottles cool and in the dark, wearing gloves—protects product and people. Trans-Cinnamaldehyde storage isn’t rocket science, but it rewards habits built around clear heads and careful decisions.
| Names | |
| Preferred IUPAC name | (E)-3-Phenylprop-2-enal |
| Other names |
Cinnamic aldehyde trans-3-Phenyl-2-propenal trans-3-Phenylacrylaldehyde Cinnamyl aldehyde Phenylacrolein |
| Pronunciation | /træns sɪˈnæməlˌdeɪhɑɪd/ |
| Identifiers | |
| CAS Number | 14371-10-9 |
| Beilstein Reference | 1207412 |
| ChEBI | CHEBI:28238 |
| ChEMBL | CHEMBL413807 |
| ChemSpider | 546872 |
| DrugBank | DB04209 |
| ECHA InfoCard | ECHA InfoCard: 100.003.641 |
| EC Number | 1.2.1.44 |
| Gmelin Reference | 10204 |
| KEGG | C01848 |
| MeSH | D002274 |
| PubChem CID | 637511 |
| RTECS number | CN8050000 |
| UNII | YXFVVABEGG |
| UN number | UN2810 |
| Properties | |
| Chemical formula | C9H8O |
| Molar mass | 132.16 g/mol |
| Appearance | Colorless to yellow oil |
| Odor | cinnamon-like |
| Density | 1.05 g/mL at 25 °C |
| Solubility in water | sparingly soluble |
| log P | 2.1 |
| Vapor pressure | 0.152 mmHg (25 °C) |
| Acidity (pKa) | 12.37 |
| Basicity (pKb) | 13.41 |
| Magnetic susceptibility (χ) | -7.62 × 10⁻⁶ cm³/mol |
| Refractive index (nD) | n20/D 1.622 |
| Viscosity | 3.74 mPa·s (25 °C) |
| Dipole moment | 3.34 D |
| Thermochemistry | |
| Std molar entropy (S⦵298) | 347.9 J·mol⁻¹·K⁻¹ |
| Std enthalpy of formation (ΔfH⦵298) | -34.5 kJ/mol |
| Std enthalpy of combustion (ΔcH⦵298) | -3632 kJ/mol |
| Pharmacology | |
| ATC code | A01AD09 |
| Hazards | |
| GHS labelling | GHS02, GHS07 |
| Pictograms | GHS02,GHS07 |
| Signal word | Warning |
| Hazard statements | H302, H315, H317, H319, H410 |
| Precautionary statements | P261, P280, P304+P340, P305+P351+P338, P405, P501 |
| NFPA 704 (fire diamond) | 2-2-0 |
| Flash point | 71 °C (closed cup) |
| Autoignition temperature | 285 °C (545 °F; 558 K) |
| Lethal dose or concentration | LD₅₀ oral (rat): 2220 mg/kg |
| LD50 (median dose) | LD50 (median dose): Oral (rat) 2220 mg/kg |
| NIOSH | GV3325000 |
| PEL (Permissible) | Not established |
| REL (Recommended) | 0.05 |
| IDLH (Immediate danger) | Unknown |
| Related compounds | |
| Related compounds |
Cinnamyl alcohol Cinnamic acid Dihydrocinnamaldehyde |
