C50 High-Purity Specialty Carbon Black
High-purity specialty carbon black made by cracking high-purity gas. Iodine 90±10 g/kg; DBP 180–260 ml/100g; Fe 20 ppm Max. For nitrides, carbides, ceramics, rubber and silicone.
DLCARBON C50 is a high-purity specialty carbon black with high cleanliness, high structure and low specific surface area. Its TDS states that it is produced by cracking high-purity gas raw materials and that metal impurities and trace elements are extremely low. CAS No. 1333-86-4 · H.S. Code 2803000000 · general chemical grade.
C50 specifications from its dedicated TDS
Taken from the C50 technical data sheet (printed 3 August 2025):
| Technical specifications (TDS) | |||
|---|---|---|---|
| DLcarb Industry Co., Ltd | |||
| Product | Specialty carbon black | Grade | C50 |
| No. | Item | Unit | Specification |
| 1 | Iodine absorption | g/kg | 90±10 |
| 2 | DBP absorption | ml/100g | 180~260 |
| 3 | NSA (specific surface area) | m²/g | 65~80 |
| 4 | Heating loss | % | 0.30 Max |
| 5 | Ash content (825°C) | % | 0.20 Max |
| 6 | pH | - | 7~9 |
| 7 | Metal content (Fe) | ppm | 20 Max |
Test methods printed on the TDS: GB/T 3780.1-2015, GB/T 3780.2-2017, GB/T 10722-2014, GB/T 3780.8-2019, GB/T 3780.10-2017, GB/T 3780.7-2016 and GB/T 30902 (iron).
Note: figures above are TDS specification ranges for reference. Delivery specifications follow the technical agreement we confirm with you. Please validate the grade in your own formulation and process. Safety information sits in the SDS (EU REACH), not in the TDS table.
What the C50 TDS says about use
The sheet says C50 is suitable for nitrides (such as aluminum nitride and silicon nitride), carbides, special ceramics, and conductive or antistatic rubber and silicone products with extremely high purity requirements. Unlike the 250G TDS, this page’s source sheet does not list plastics, so we do not claim plastics here. More context: specialty carbon black and when high purity is the right filter.
Iron content and the gas-cracking note
Two details are unique to the C50 sheet among this pair: a published iron limit of 20 ppm Max, and the statement that the grade is made by cracking high-purity gas raw materials. 250G instead publishes a 325-mesh sieve residue (50 ppm Max) and a narrower DBP window (180±10 ml/100g vs 180~260 ml/100g). Choose between them from those printed differences and from the application sentences on each TDS, then confirm with a sample — not from marketing language.
SDS, TDS and sample reports
Alongside the TDS we publish an EU REACH SDS for carbon black (CAS 1333-86-4) and three SGS reports dated 26 June 2026 on a submitted carbon black sample: REACH Candidate List SVHC screening (253 substances, results ≤0.1% w/w, plus one potential SVHC also ≤0.1% w/w); EU RoHS Directive (EU) 2015/863 amending Annex II to 2011/65/EU (Pass); and halogen testing to IEC 62321-3-2:2020 (fluorine, chlorine, bromine and iodine reported ND on that sample; MDL 20 mg/kg for F and 50 mg/kg for Cl, Br and I). Those reports describe the submitted sample — they are not a substitute for the grade TDS or a lot COA. DLCARB C50 is named on the SDS service summary.
Downloads: C50 Technical Data Sheet (PDF) · SDS — EU REACH (PDF) · REACH SVHC screening (PDF) · RoHS report (PDF) · Halogen report (PDF)
The TDS storage note is the same across these sheets: keep the material in a cool, dry, well-ventilated warehouse; protect it from moisture; guard against dust inhalation and skin contact; store it apart from strong oxidants and do not mix-store. For classification and safe handling, follow the SDS rather than the short TDS footnote. We have not listed MOQ or Incoterms on this page.
Request a sample or quote · Sample & export · SDS, specs & export documents · How to choose a supplier
Key features
- Produced by cracking high-purity gas raw materials (TDS)
- Iodine 90±10 g/kg; DBP 180~260 ml/100g; NSA 65~80 m²/g
- Iron content 20 ppm Max; no sieve-residue row on this sheet
- Dedicated C50 TDS, EU SDS (model listed) and June 2026 SGS sample reports