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(E,E)-8,10-dodecadien-1-ol (CAS 33956-49-9): alcohol for alcohol components, packed to order with COA and SDS on every lot.
Two double bonds in conjugation and a primary alcohol at the end of a twelve-carbon chain — the geometry is the whole point of this entry. The (E,E) descriptor is not a naming detail; a lot with the other geometry is a different product in a trap, which is why the release specification pins it and the certificate reports it. Every figure below is a commitment we can document; anything that depends on your formulation is marked as such.
| CAS number | 33956-49-9 |
|---|---|
| Molecular formula | C12H22O |
| Molecular weight | 182.30 g/mol |
| Isomeric form | (E,E) |
| Standard packing | 1kg / 25kg / 100kg |
| Documentation | COA and SDS with every lot |
| Quote basis | Per lot, specification agreed before dispatch |
An alcohol, chemically
The hydroxyl group gives the molecule its polarity: it hydrogen-bonds, it wets surfaces differently from a hydrocarbon, and its release from a polymer matrix is slower than that of the corresponding acetate. That difference is often the reason a blend pairs an alcohol with an acetate rather than doubling up on one class.
Stability in storage and on the dispenser
Primary alcohols are comparatively robust; the practical risks are moisture pick-up and, for unsaturated chains, oxidation at the double bond. Sealed, dark and cool covers both. Esterification with any acid present in a carrier is a slow background reaction worth avoiding.
What the analytics have to show
The hydroxyl value is not the useful number here — identity, isomeric ratio and the absence of the corresponding acetate or aldehyde are. A lot that has partly oxidised will show the aldehyde on a chromatogram, which is why the method is stated on the COA.
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
Geometric isomers of one skeleton behave differently on a dispenser, so the E/Z form is written into the name and repeated on the COA. This entry is the (E,E) 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
When a customer moves from trial to commercial volume, the load rate is normally kept and the packing is scaled. That keeps the field result reproducible.
Packing and lot size
We confirm net weight per unit on the documents, which matters when a formulator meters by mass rather than by volume.
Documentation
Confidentiality runs both ways: customer blends are not disclosed, and we do not ask for more of a formulation than the specification requires.
Ordering
The form on this page reaches a technical desk, not a general inbox, and it is answered within one business day.
Fitment: the four questions
The catalogue lists actives, not blends. A blend is where the value sits, and blending is done by the customer or on request — enquiries that arrive with a blend sheet get a faster and more useful answer.
Cross-contamination in a blending house
Label discipline is the cheap half of the control. A container without a lot number cannot be compared with anything later, which is how a contamination incident becomes unresolvable.
What to send with an enquiry
Four lines are enough to make the reply specific: CAS number, quantity for the first order, packing preference and destination country. A specification sheet, if one exists, shortens it further.
From trial lot to production lot
A trial lot and a commercial lot come off different equipment. Customers who keep the trial certificate on file can put the two documents side by side, which is the only reliable way to see whether anything moved.
What the analytical package covers
Where a customer runs a different GC method, the two results rarely agree to the decimal. Agreeing the method at order stage is cheaper than reconciling two certificates later.
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. (E,E)-8,10-dodecadien-1-ol 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 / 100kg?
- 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 33956-49-9?
- 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 lure blends as an alcohol component or modifier?
- 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
Close the container after dispensing, keep it clear of ignition sources, and follow the SDS for storage and disposal.
Request a quotation for (E,E)-8,10-dodecadien-1-ol
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.