How to Choose a Carbon Black Supplier
A factory-qualification checklist for carbon black: published grade specifications, downloadable SDS and TDS, third-party sample reports, and a sample path that does not hide behind placeholder copy.
Brand language is a weak way to qualify a carbon black plant. A buyer who has to file SDS documents, run a trial and then place an export order usually checks whether the supplier publishes real grade numbers, whether those numbers sit in a downloadable TDS, and whether safety and sample-compliance files exist as PDFs rather than as a promise to “send later.”
What a factory qualification usually checks
| Factor | Why it matters | What to ask or download |
|---|---|---|
| Grade specifications | Whether the row can enter your formula window | The published TDS table — iodine or surface area, oil/DBP absorption, ash, pH, resistivity or tinting strength, as the sheet actually prints them |
| SDS | EHS filing, storage and transport | The published EU REACH SDS; say explicitly if your site requires another format |
| TDS and COA path | Incoming inspection and lot control | TDS PDF now; how COA fields will be confirmed per lot |
| Sample compliance reports | Customer and import questionnaires | REACH SVHC, RoHS and halogen reports when they exist — read as sample reports, not as a lot COA |
| Samples | Lab and pilot validation | Grade, form, approximate mass, ship-to country |
| Supply terms | Production planning | MOQ, packaging, timing and Incoterms — asked in the inquiry, not scraped from marketing copy |
| A reachable export contact | Projects move on documents | English contact, a document list, and a reply path |
How the published DLcarb pages answer those checks
Six grades carry TDS-grounded specification tables and application sentences:
- SP150 and SP250-Li — acetylene conductive rows on the conductive line; they do not share the same application map.
- 250G — dedicated high-purity specialty TDS on the high-purity line.
- C50 — dedicated specialty TDS, including a published iron limit, on the specialty line.
- P1550 and C111 — furnace versus channel pigment rows on the pigment line.
Downloads that sit behind those pages, and are also collected in SDS, specs and export documents:
- SDS — EU REACH (PDF)
- Conductive / antistatic TDS · 250G TDS · C50 TDS · Pigment TDS
- REACH SVHC screening (26 June 2026; ≤0.1% w/w on the submitted sample) · RoHS Pass · Halogen ND
How to name a sample and what to put in the email: sample and export inquiry. Contact: michael@dlcarb.com or Contact.
Documents versus a lot COA
The June 2026 SGS files describe a submitted sample named CARBON BLACK. That is useful for a first questionnaire. It is not proof of the next production lot. Ask how COA fields will be agreed before you treat any PDF as incoming-inspection data.
FAQ
Do I need the highest surface-area grade?
Not always. Conductivity, dispersion, purity and process viscosity trade off. Start from the host system and the published application map, then shortlist two or three rows — for conductive work, that usually begins with the conductive selection guide.
Is an EU SDS enough for a US plant?
The document we publish is the EU REACH SDS (Regulation 2020/878). A US OSHA/HCS-format SDS is not published on this site. If your plant’s file requires HCS format, say so in the inquiry.
Where should I start on this site?
Open the matching category page, read one grade, download its TDS and the SDS, then send application plus target specs via Contact. Category entries: conductive, high-purity, specialty, pigment.