POM monomer
The main monomer for acetal copolymer, polymerized with a cyclic comonomer such as 1,3-dioxolane.
Trioxane
1,3,5-Trioxane Supplier from China
1,3,5-Trioxane is the cyclic trimer of formaldehyde and the main monomer for acetal (POM) copolymer, as well as a dry source of formaldehyde in synthesis. SUNCHEM supplies trioxane in 25 kg bags with a batch COA on every shipment.
CAS 110-88-3 · (CH₂O)₃ · Trioxymethylene
- Lot COA with every shipment
- Samples for your trials
- Technical support for your trial
Product overview & key benefits
Trioxane is a white crystalline solid that releases formaldehyde when acids open its ring. Ring-opening copolymerization of trioxane with a small amount of a cyclic comonomer such as 1,3-dioxolane gives POM copolymer, the engineering plastic used for gears, clips and precision parts. In synthesis it is used where anhydrous formaldehyde is needed, and it is also used in disinfectant formulations.
For POM producers, purity, water, formic acid and methanol are the critical limits, because these impurities stop chain growth.
Anhydrous formaldehyde source
Releases formaldehyde on acid ring-opening, without the water and methanol that come with formalin.
Bagged solid
Supplied in 25 kg bags, with a batch COA for every lot.
Technical specifications
| Parameter | Typical value |
|---|---|
| Product name | 1,3,5-Trioxane |
| Synonyms | Trioxymethylene; s-trioxane; metaformaldehyde |
| CAS No. | 110-88-3 |
| EC No. | 203-812-5 |
| Molecular formula | C₃H₆O₃ |
| Molecular weight | 90.08 |
| Appearance | White crystalline solid |
Purity, water, formic acid and methanol limits depend on the producer grade and are stated on the TDS and batch COA; the limits for your order are confirmed in the quotation and contract.
Applications by Industry
Where trioxane is used, and what to confirm before you switch supply.
Acetal (POM) copolymer
Ring-opening copolymerization with a cyclic comonomer such as 1,3-dioxolane gives POM copolymer for engineering parts.
Check before trial
- Purity, water, formic acid and methanol limits
- Comonomer system
- Monthly volume and delivery rhythm
Formaldehyde source in synthesis
Used where dry formaldehyde is needed in organic and pharmaceutical synthesis.
Check before trial
- Purity you need
- Sample size for a lab or pilot run
- Documents your QA team needs
Disinfectants & other uses
Used in disinfectant formulations and other formaldehyde-based chemistry.
Check before trial
- Formulation and dosage
- Pack size
- Destination regulations
Selection & comparison
Choosing for your process
| Your requirement | What usually works |
|---|---|
| POM copolymer production | Polymer-grade trioxane; agree water, formic acid and methanol limits |
| Comonomer for POM | 1,3-Dioxolane (also supplied by SUNCHEM) |
| Formaldehyde source in synthesis | Standard trioxane |
| Replacing an existing supplier | Send your current TDS or COA; we quote against the parameters you approve |
Packaging & storage
Packaging
25 kg bags.
Storage
Keep bags closed in a cool, dry, ventilated store away from heat, acids and ignition sources: trioxane slowly sublimes and its vapor is flammable. Follow the SDS.
Transport
Trioxane is classed as a flammable solid for transport; the SDS gives the UN number and class.
From first email to approved supply
Name the use
POM, synthesis or formulation: POM producers need much tighter impurity limits than other users.
Compare the numbers that matter
Purity, water, formic acid and methanol. Ask for them on the same COA template as your incoming inspection.
Plan storage and transport
Trioxane is a flammable solid. Agree packaging and port early, and store it cool and away from acids.
Trial, then lock the spec
Run a sample in your own process and keep the approved lot COA as the reference for contract limits.
Tell us your requirement. We match the grade.
Tell us how you use trioxane, the quantity and the destination port. Add your current specification and we will quote against it.
| Information | Example |
|---|---|
| Application | POM, synthesis, disinfectant |
| Required specification | Purity, water, formic acid, methanol |
| Packaging | 25 kg bags |
| Quantity | Trial order / monthly / annual volume |
| Destination | Country and port |
| Documents needed | COA, SDS, TDS, REACH statement |
1,3,5-Trioxane FAQ
What is 1,3,5-trioxane used for?
Mainly as the monomer for acetal (POM) copolymer. It is also a dry formaldehyde source in synthesis and is used in disinfectant formulations.
Which impurities matter for POM production?
Water, formic acid and methanol, because they stop chain growth. Agree these limits together with purity before sampling.
How is trioxane packed?
In 25 kg bags. It is a flammable solid for transport, so it ships with dangerous-goods documents.
Do you also supply 1,3-dioxolane?
Yes, 1,3-dioxolane is in our range. Ask for both in the same quotation if you make POM copolymer.
