B2B marketplace for surplus & secondary chemicals Direct: +41 79 928 35 76 Mon–Fri 8:00–17:30 info@chemexchange.ch
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Compound –/6 · Skeletal formula
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B2B marketplace for surplus & secondary chemicals · DACH

The marketplace for chemicals that already exist.

ChemExchange connects surplus, remnants and near-expiry batches with buyers who are looking for exactly that — discreet, verified, REACH/CLP-clean. The substance data is open. Who is selling stays hidden until you decide.

Open marketplace Report surplus FREE
Live from the marketplace

Real goods, real discounts — no login wall.

Every lot with CAS, batch, shelf-life countdown and document status. The seller stays anonymous until they release your inquiry.

LOT — CMX-0084
Alcohols

3-Methoxy-3-methylbutan-1-ol

Kuraray · CAS 56539-66-3
Quantity
16900 kg
Location
61100 FLERS, FR
Shelf-life remaining237 days
SIGNS · verified
2.00 €/kg
France
LOT — CMX-0079
Oxides

TITANIUM DIOXIDE 2190

Kronos · CAS 13463-67-7
Quantity
24000 kg
Location
None, DE
Shelf-life remaining474 days
Identity verified — name hidden
3.30 €/kg
Germany
LOT — CMX-0078
Inorganic pigments

CP 21

Lanxess · CAS 1317-61-9
Quantity
1000 kg
Location
Pinneberg , DE
Shelf-life remaining642 days
Identity verified — name hidden
3.00 €/kg
Germany
CMX-0077 Bentone 38 1000 kg Pinneberg 644 T 10.00 /kg CMX-0076 SILICON DIOXIDE 4400 kg Pinneberg 647 T 10.00 /kg CMX-0075 Aerosil 200 3960 kg Pinneberg 647 T 8.00 /kg
View all lots Beta · includes demo listings
Why we exist
Surplus CMX anonymous · verified · DACH Reuse

A catalyst enables reactions that would otherwise not happen — without being consumed itself. That is exactly what ChemExchange does for the surplus market: we lower the barrier between your warehouse and the buyer looking for precisely this material.

For chemists: with the right catalyst, an inhibited reaction becomes spontaneous. ΔG < 0

R 1 Surplus + demand → deal · well below list price The main reaction: listing is free, the seller stays anonymous until release.
R 2 Shelf life tips ⇌ expired trading · B2B · disclaimer · −30–50 % The equilibrium: expired goods are not worthless — they need transparency and the right buyers.
R 3 Not usable ↓ CMX Disposal · certified partners CH/DE The precipitation: what really cannot be used drops cleanly out of the market — disposal documented.
Compliance

We speak your symbols — before you have to ask.

REACH & CLP built inCAS validation, GHS labelling from PubChem, SDS/TDS as mandatory documents per listing.
ADR-readyUN number and dangerous-goods class captured in structured form — the basis for transport documents.
Verified B2B companiesCommercial-register check before activation. Anonymity for the market, clarity in the background.
Swiss data residencyHosted in Switzerland, DPA and GDPR compliant. Your inventory data is a trade secret — we treat it that way.
Concierge

Send us your list. We do the rest.

No master-data grooming, no onboarding ceremony. Excel, PDF or a photo from the warehouse is enough — we structure, verify and anonymise.

01Send the listExcel, a stack of SDS, an ERP export or a phone photo of the drum — anything is a start.
02We build the listingsCAS matching, GHS symbols, shelf life, documents — verified and published anonymously.
03Online in 24 hInquiries reach you curated. You release them — or you don't.
Book a concierge call 15 min Upload your list
Used to trade on CheMondis? The marketplace went offline in May 2026. We don't replace it — but for surplus, remnants and near-expiry stock we are the new address. Read the CheMondis migration guide →