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trans-11-Tetradecenyl acetate (CAS 33189-72-9): acetate ester for acetate-based lures, packed to order with COA and SDS on every lot.
The trans isomer of 11-tetradecenyl acetate: a fourteen-carbon chain, one double bond, one acetate. Geometry is the specification here. The trans form is a distinct entry from its cis partner, with a different release behaviour on a dispenser and a different place in a blend, and the two are not interchangeable on a purchase order. If a specification sheet already exists on your side, send it. We will say plainly whether it can be met and where the tolerance falls.
| CAS number | 33189-72-9 |
|---|---|
| Molecular formula | C16H30O2 |
| Molecular weight | 254.41 g/mol |
| Isomeric form | trans |
| Standard packing | 1kg / 25kg / 50kg |
| Documentation | COA and SDS with every lot |
| Quote basis | Per lot, specification agreed before dispatch |
An acetate ester, chemically
The ester linkage moderates the polarity of the chain, which is why acetates release more evenly from rubber and polymer matrices than the parent alcohols and are the backbone of many moth lures. The same linkage hydrolyses under acidic or basic conditions, so the carrier and any water in the system matter.
Stability in storage and on the dispenser
Hydrolysis and oxidation are the two ageing routes. Keep the material dry, sealed and away from acidic or basic contamination, and the lot will outlast a season; leave it in a humid store and the free acid will appear on the next chromatogram.
What the analytics have to show
Assay, isomeric ratio and the free-acid figure. For a dienyl acetate the geometry of the conjugated system is part of identity, not a detail: two lots with the same assay and a different E/Z split are not interchangeable.
Sample approval, step by step
The sample is drawn from a released lot, not from a development batch, and it arrives with the same certificate the commercial lot will carry. Approval is therefore a comparison of documents as much as of material, which is what makes the later scale-up predictable.
Isomeric form
For a blend already on the market, the isomer ratio is the first thing to match and the last thing anyone documents. We document it. This entry is the trans form. The lot is released against that descriptor, and the ratio of the named isomer to its partner is stated on the certificate.
Load rate and blend position
Replacing a supplier mid-season is the usual reason a catch curve changes; send the previous COA and we will say whether the specification can be matched.
Packing and lot size
1kg / 25kg / 50kg are the standard sizes. Anything outside that range is quoted with the packing cost separated out, so the comparison stays honest.
Documentation
Documentation is part of the product: COA per lot, SDS per material, and a specification sheet that can be filed against your own incoming-goods procedure.
Ordering
Samples are available before a commercial commitment, and a sample lot carries the same documents as a production lot. That is the point of taking one.
What to send with an enquiry
The most common delay is an enquiry that names a compound but not the blend, so the answer can only describe the material rather than confirm fitment. A blend sheet, even a partial one, removes that step.
From trial lot to production lot
The first commercial order normally repeats the trial quantity. That is deliberate: it separates a scale-up problem from a formulation problem before a full batch is committed.
What the analytical package covers
The package we issue covers assay, isomeric ratio and identity. A full impurity profile is not included unless it is asked for, because the useful impurities depend on the route and on what your own specification limits.
Release rate and dispenser matching
On a passive dispenser the active has to leave the matrix at a rate the insect can follow. That is a formulation property, which is why load rates are not transferable between dispenser types without field confirmation.
Registration and destination paperwork
For research quantities the paperwork is lighter than for commercial volume, but it is not absent. Ask before the order, not after the invoice.
Questions buyers ask about this CAS
- What does the certificate of analysis report for this material?
- Identity, assay and isomeric ratio, each against a named method. trans-11-Tetradecenyl acetate is released against that certificate rather than against a catalogue description, and the lot number on the document matches the container.
- Can the packing be changed from 1kg / 25kg / 50kg?
- Usually, where the order supports it. Smaller fills are quoted with the packing cost shown separately, and customer-labelled units are handled as part of the order rather than as an exception afterwards.
- How is the isomeric form fixed for CAS 33189-72-9?
- It is written into the release specification and reported on the certificate. Where the name already carries a stereodescriptor — as this one does — matching that descriptor is the first condition of the release.
- Do you supply outside moth and beetle lures?
- The same material is quoted for any application where the specification can be met. If the intended use has a documentation requirement attached to it, that is worth stating at enquiry stage so the paperwork can be planned in advance.
Handling and storage
Keep the container closed and out of direct light, away from heat, and handle it with the protection named in the SDS.
Request a quotation for trans-11-Tetradecenyl acetate
The CAS number and the compound name are already filled in. Add the quantity, the packing you want and the destination, and the reply comes back with a specification against it.