What Is Intreleven Aldehyde Special?
Intreleven Aldehyde Special is an aroma chemical belonging to the aldehydic family, supplied by International Flavors & Fragrances (IFF). While IFF holds the flagship version, several other fragrance houses and raw-material brokers offer comparable grades under generic names, ensuring broad availability to perfumers large and small.
The material is produced from surplus plant-based feedstocks that would otherwise go to waste. Through a series of controlled oxidation and purification steps, these streams are transformed into a pure aldehyde that carries a fresh, vibrant olfactive profile. Because it comes from upcycled sources and is readily biodegradable, it has gained popularity among brands seeking greener storytelling.
At room temperature the ingredient presents as a clear to very slightly yellow liquid with a light viscosity that pours easily. It dissolves well in ethanol and most perfume oils, so weighing and blending pose no special challenges.
Usage is common in fine fragrance and functional products where a brisk, uplifting top accord is desired. When stored in a cool dark place and kept tightly closed, it typically maintains full strength for roughly two years, though many perfumers report acceptable performance beyond that timeframe if the bottle has minimal headspace.
Pricing sits in the mid range for specialty aldehydes. It is not a budget commodity but also not a luxury rarity, making it accessible for both niche projects and larger commercial launches.
Intreleven Aldehyde Special’s Scent Description
This ingredient is grouped into the fresh olfactory family, a space shared by marine, citrus and airy floral notes. Off a blotter its opening rush is bright and sparkling, reminiscent of the fizz you get when peeling a cold lemon next to the sea. Within seconds a dewy ozone nuance appears, giving the impression of cool coastal air mixed with early morning blooms.
As the blotter dries the floral facet becomes more obvious, sitting somewhere between lily of the valley and a petal-fresh rose, yet always laced with a salty mist that keeps it crisp rather than powdery. A subtle waxy undertone anchors the note so it never turns sharp or acidic.
In the traditional perfume pyramid aldehydes like this live firmly in the top zone, lighting up a composition during the first fifteen to thirty minutes. However Intreleven Aldehyde Special shows better staying power than classic low-molecular aldehydes, often lingering into the early heart where it supports citrus, melon or watery florals.
Projection is pronounced in the opening, creating an airy aura that radiates well beyond arm’s length. Longevity on skin or fabric is moderate: expect three to five hours of detectable presence before it fades into a soft trace, though in blends it can help lift the entire fragrance for much longer.
How & Where To Use Intreleven Aldehyde Special
Perfumers pull out Intreleven Aldehyde Special when they want instant lift and clarity in the opening of a formula. It excels in brightening white flowers, citrus bouquets or marine accords that risk feeling flat. A few drops can push a jasmine heart forward or make a watery cucumber note feel more like a sea breeze.
At low levels, around 0.05 % to 0.2 % of the finished oil, its citrus ozone sparkle is airy and clean. Between 0.3 % and 1 % the floral aspect heats up and the material starts to shape the overall personality of the fragrance rather than just season it. Crossing the 1 % line gives a loud waxy top note that can feel soapy and dated if not balanced by rich heart notes or woods.
The molecule pairs easily with other aldehydes like C-10 or C-12 MNA, yet you can skip those and lean on green materials or musks for a more contemporary vibe. It also bonds well with ionones, calone and soft musks to build modern sea-spray effects.
Intreleven Aldehyde Special shines in fine fragrance, soaps and fabric conditioners where moderate heat and neutral pH help it stay intact. Performance drops in powder detergents because high process temperatures strip away the fresh facets, so formulators often replace it there with more robust aldehydes.
Overdosing is the main pitfall. Too much and the perfume may smell like freshly opened paint thinner for the first hour. It can also clash with delicate gourmand notes by turning them waxy. Always start with trace amounts in a 10 % ethanol or DPG dilution, evaluate on blotter then scale up in small increments.
No special prep is needed beyond standard dilution. The raw material is thin and mixes quickly into alcohol or dipropylene glycol. Give blends a gentle swirl or brief propeller stir until the solution looks clear. Allow the concentrate to rest overnight so micro-bubbles escape before final evaluation.
Finally, label any mod that contains this aldehyde clearly. Its scent travels fast in the lab and can influence how you perceive other strips lying nearby.
Safely Using Intreleven Aldehyde Special
Dilution is key so always prepare a working solution before smelling or weighing the material. Avoid direct sniffing from the bottle because even a fleeting whiff can overwhelm your nose and mask subtler notes in the composition. Work with the windows open or under a fume hood to keep airborne concentration low.
Protective gear is non negotiable. Nitrile gloves stop the liquid from touching skin and safety glasses guard against accidental splashes when you pipette or pour. If any material lands on your hands wash immediately with soap and plenty of water.
Most users tolerate short low-level exposure without issues, yet some people develop skin irritation or sensitization over time. If you have sensitive skin or known allergies wear long sleeves and monitor for redness. Anyone pregnant or breastfeeding should speak with a healthcare professional before handling aroma chemicals.
Breathing concentrated vapors for extended periods may cause headaches or nausea. Keep sessions short and store the open bottle promptly to prevent buildup of fumes in the workspace.
Dispose of spills by absorbing them with inert material like vermiculite then sealing the waste in a labeled container for specialized disposal. Never pour leftovers down the drain as the compound, while readily biodegradable, still needs proper treatment.
For all safety details refer to the latest MSDS supplied by your vendor. Updates can change recommended exposure limits or PPE so review the sheet regularly. When formulating products for market check the current IFRA standards to confirm your final usage level meets global safety requirements.
How To Store & Dispose of Intreleven Aldehyde Special
Longevity begins with temperature control. A cool dark cupboard at roughly 15 – 20 °C suits most users, yet a spot in the fridge can stretch the shelf life even further. If you chill it let the bottle warm to room temperature before opening so moisture does not condense inside.
Light and oxygen are the main enemies. Keep the container in an opaque box or drawer and never park it near radiators windows or busy lab lights. Fit tight sealing polycone caps on both neat material and dilutions. They grip the neck better than dropper tops and stop slow vapour leaks that weaken the scent.
Top up small bottles whenever possible. The less empty space above the liquid the slower oxidation proceeds. Some perfumers decant working stock into 10 ml or 30 ml vials and refill them from a larger master bottle kept sealed until needed.
Always add clear labels that show the full ingredient name CAS number date of opening and any hazard symbols. Good labelling prevents mix-ups and speeds disposal audits later on.
When product life is over treat leftovers with care. The molecule is readily biodegradable but still counts as chemical waste. For a few millilitres soak it into paper towel or vermiculite then place the solid in a sealed bag before dropping it at your local household hazardous collection point. Larger volumes should go to a licensed industrial waste service that can process organic solvents safely. Never pour it down the drain since municipal systems may not handle concentrated fragrance chemicals.
Summary
Intreleven Aldehyde Special is IFF’s fresh aldehyde Undec-2-enal, a clear liquid that bursts with lemon peel sea air and a clean floral sheen. Used mainly as a top note it lifts citrus bouquets white flowers and marine accords while fading gracefully into the heart.
The ingredient sits in a friendly mid price tier and performs well in fine fragrance soaps and fabric conditioners, though it struggles in hot powder detergents. Its sparkle can feel soapy if overdosed so measured use is key.
Stability is good for about two years when stored cool and dark, with refrigeration adding extra months. Oxidation dulls its punch so tight caps and full bottles help keep it vibrant.
Professionals buy directly from IFF or authorised distributors in kilogram lots. Hobbyists can source smaller decants from reseller shops or generic makers who list it under Undec-2-enal or the CAS number 1337-83-3. Whether you work at lab scale or kitchen scale this versatile aldehyde delivers an instant clean lift that few other notes can match.