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(Z)-9-Hexadecenal (CAS 56219-04-6): aldehyde for fast-releasing monitoring lures, with the isomeric form and packing agreed per order and COA and SDS on every lot.
The same sixteen-carbon skeleton and the same aldehyde group as (Z)-11-hexadecenal, with the double bond one position lower in the chain. That single shift is enough to change which blend the compound belongs in, and it is the reason the positional descriptor has to be matched rather than approximated. The first reply covers specification, packing and the batch window, because those three decide whether the order moves.
| CAS number | 56219-04-6 |
|---|---|
| Molecular formula | C16H30O |
| Molecular weight | 238.41 g/mol |
| Isomeric form | (Z) |
| Standard packing | 1kg / 25kg / 100kg |
| Documentation | COA and SDS with every lot |
| Quote basis | Per lot, specification agreed before dispatch |
A conjugated aldehyde, chemically
The carbonyl at the end of the chain makes this a reactive molecule: it oxidises to the corresponding acid in air and it participates in the addition reactions that a formulator has to keep away from. That reactivity is exactly why the compound works at very low load, and why it is the first component in a blend to show its age.
Stability in storage and on the dispenser
Light, oxygen and trace metals are the three things to exclude. Sealed containers with limited headspace, dark storage and a clean dispenser matrix extend useful life; a partly used drum left open in a warm room does not. If catch drops late in the season, the aldehyde has usually gone before the carrier has.
What the analytics have to show
Identity and isomeric ratio are the two parameters that decide whether the lot will behave like the last one. An assay figure on its own is not enough for an aldehyde, because a material can be 97% pure and still be the wrong isomer.
Labelling and traceability
Each unit carries product name, CAS number, lot number, net weight and the storage condition from the SDS. Traceability runs from that label back to the release certificate, and forward to the shipment documents, which is what an audit normally asks for.
Isomeric form
Where a blend is sensitive to isomer ratio the ratio is agreed in writing before release. This entry is the (Z) 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
In a blend this compound is dosed by mass against a carrier or a dispenser matrix. The figure itself comes from your field data; we supply against the release specification it implies.
Packing and lot size
If your store can only take one unit size, say so at enquiry stage and the quotation is built on that packing alone.
Documentation
Incoming inspection is easier when the COA parameters can be reproduced on a standard GC set-up, so that is how they are chosen. Where a method differs we say so before shipping.
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.
Registration and destination paperwork
Paperwork follows the destination. Some markets ask for a registration or an import permit for semiochemicals; others treat lure actives as ordinary industrial chemicals. Naming the country at enquiry stage lets the document set be planned instead of discovered at the port.
Compatibility with carriers and dispensers
Silicone, EVA and natural rubber each take up different amounts of the same compound. A formulation transferred between them keeps its ratio but changes its release profile, so the dispenser is part of the specification rather than an accessory.
Fitment: the four questions
A compound can be the right chemistry and the wrong fitment. Where a blend is unsuccessful, the ratio and the dispenser are usually the two variables worth revisiting before the material is blamed.
Cross-contamination in a blending house
Cross-contamination between actives shows up as an inexplicable change in catch rather than as a laboratory failure. Dedicated weighing equipment and a documented clean-down between blends cost less than a lost season.
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.
Questions buyers ask about this CAS
- How is the isomeric form fixed for CAS 56219-04-6?
- 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 fast-releasing monitoring 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.
- What is the usual first-order route?
- A specification exchange, then a trial lot, then a commercial batch at the trial quantity before scaling. Each step is quoted, and none of them commits the customer to the next.
- Can we start with a trial quantity before a commercial order?
- Yes. A trial lot of (Z)-9-Hexadecenal is quoted separately from a production lot, because the packing and the analytical package differ. The sample carries the same documentation as a production lot, so the certificate you approve is the format you will receive at volume.
Handling and storage
Close the container after dispensing, keep it clear of ignition sources, and follow the SDS for storage and disposal.
Request a quotation for (Z)-9-Hexadecenal
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.