Industrial Rubber
Carbon black for rubber products beyond tires: conveyor belts, hoses, seals, diaphragms…
N772 Carbon Black Soft grade Origin: Iran
N772 Carbon Black
N772 carbon black is a semi-reinforcing grade. It gives compounds high elasticity, processes easily and disperses well. For extruded parts and molded rubber components.
- HS Code
- 2803.00
- Minimum order
- 1 pallet
- Delivery terms
- EXW · FOB · CFR · CIF · DDP
With an iodine adsorption of 30 g/kg and a pour density of 520 kg/m³, N772 carbon black is the lowest-surface-area, highest-density grade in the range. It belongs to the semi-reinforcing class: it makes a clear mechanical contribution to rubber but does not stiffen it as much as the hard grades.
The elasticity advantage
Low surface area lets the polymer chains move more freely. The result is high elasticity and low compression set. In seals, bellows and parts under constant compression, this behavior translates directly into product life.
Applications
Extruded parts, belts and hoses, molded rubber components, plastics applications.
Technical Specifications
| # | Property | Value | Unit |
|---|---|---|---|
| 01 | Iodine adsorption number ASTM D1510 | 30 ± 5 | g/kg |
| 02 | Oil absorption number (OAN) ASTM D2414 | 65 ± 5 | ml/100 g |
| 03 | Compressed oil absorption number (COAN) ASTM D3493 | 59 ± 5 | ml/100 g |
| 04 | Pour density ASTM D1513 | 520 ± 20 | kg/m³ |
| 05 | Heating loss (max) ASTM D1509 | 1 | % |
| 06 | Toluene discoloration (min) ASTM D1618 | 60 | % |
| 07 | pH ASTM D1512 | 7.5 – 9 | |
| 08 | Fines content — Q-Bag (max) ASTM D1508 | 7 | % |
| 09 | Fines content — bag (max) ASTM D1508 | 10 | % |
| 10 | Individual pellet hardness — single max (20 pellets) ASTM D5230 | 50 | cN |
| 11 | Individual pellet hardness — average (20 pellets) ASTM D5230 | 10 – 40 | cN |
| 12 | Sieve residue — No. 35 US Std (max) ASTM D1514 | 10 | ppm |
| 13 | Sieve residue — No. 325 US Std (max) ASTM D1514 | 1,000 | ppm |
| 14 | Ash content (max) ASTM D1506 | 0.75 | % |
| 15 | Sulfur content (max) ASTM D1619 | 2 | % |
| 16 | Nitrogen surface area (NSA) ASTM D6556 | 32 ± 5 | m²/g |
| 17 | External surface area (STSA) ASTM D6556 | 30 ± 5 | m²/g |
| 18 | Particle size | 61 – 100 | nm |
Values are manufacturer specifications; ± indicates the production tolerance. Every shipment is sent with a certificate of analysis (CoA) for that batch from an ISO/IEC 17025 accredited laboratory.
Packaging and Loading
| Packaging Type | Net Weight | Per Pallet | Container / Truck |
|---|---|---|---|
| Jumbo bag (PP-PE, double valve) | 1,000 kg | 1,000 kg | 20' FCL 10 pallets / 10,000 kg · 40' FCL 20 pallets / 20,000 kg · Truck 22 pallets / 22,000 kg |
| Two-ply kraft paper-PE bag | 25 kg | 1,375 kg | 20' FCL 11,000 kg · 40' FCL 22,000 kg · Truck 22,000 kg |
Certificates
Technical Data Sheet (TDS)Available on request
Safety Data Sheet (SDS)Available on request
- ISO 9001
- ISO 14001
- ISO 45001
- ISO/IEC 17025
Key Features
- Semi-reinforcing grade — A balance between reinforcement and flexibility.
- High elasticity — Improves the recovery behavior of the compound.
- Easy processing and good dispersion — Shortens mixing time.
- Balanced mechanical properties — A profile suited to general-purpose use.
Industries Served
Plastics & Masterbatch
In black masterbatch production, carbon black is both a pigment and a UV protector, so choosing…
Footwear
Carbon black for shoe soles has to deliver abrasion resistance, slip resistance and color…
Agriculture & Packaging
Mulch film, silage covers, greenhouse covers, drip irrigation pipes and heavy-duty sacks. The…
Similar Grades
Trial program
How does it work?
1-pallet trial offer
Test the product and return it if you are not satisfied. No obligation.
Frequently Asked Questions About This Product
What does semi-reinforcing mean for N772?
It makes a clear mechanical contribution to rubber but does not stiffen it as much as the hard grades. With an iodine adsorption of 30 g/kg, it is the lowest-surface-area grade in the range; the polymer chains move more freely, which results in high elasticity.
What products is N772 used in?
Extruded parts, belts and hoses, molded rubber components and plastics applications. In seals and parts under constant compression, low compression set is an advantage.
What packaging is N772 available in?
We offer two options: a 1,000 kg double-valve PP-PE jumbo bag and a 25 kg two-ply kraft paper-PE bag. A pallet of bags holds 1,375 kg of product; a 20' container takes 11,000 kg and a truck 22,000 kg. With jumbo bags, these figures are 10,000 kg and 22,000 kg respectively.
Does N772 come with a certificate of analysis and a safety data sheet?
Yes. Every shipment is sent with a certificate of analysis (CoA) for that batch, issued by an ISO/IEC 17025 accredited laboratory. We send the safety data sheet (SDS) on request; if you would like to see a sample report before ordering, you can ask for one through the quote form.