|
HS Code |
170753 |
| Chemical Formula | C |
| Appearance | Fine black powder |
| Molar Mass | 12.01 g/mol |
| Density | 1.8 g/cm³ |
| Melting Point | Sublimates |
| Solubility In Water | Insoluble |
| Boiling Point | Sublimates |
| Thermal Conductivity | Low |
| Electrical Conductivity | High (depends on structure) |
| Cas Number | 1333-86-4 |
As an accredited Carbon Black factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | Carbon Black is packaged in a 25 kg multi-ply paper bag with a plastic lining, labeled with product details and safety warnings. |
| Container Loading (20′ FCL) | Container Loading (20′ FCL) for Carbon Black: Typically loaded in 10 metric ton jumbo bags, 20 bags per container, ensuring secure, moisture-free transport. |
| Shipping | Carbon Black is shipped in bulk bags, drums, or silo trucks. It should be kept dry, away from strong oxidizers, and protected from moisture. During transport, ensure containers are well-sealed and appropriately labeled according to IMDG, ADR, or applicable regulations. Handle with care to prevent dust formation and environmental contamination. |
| Storage | Carbon Black should be stored in a cool, dry, well-ventilated area away from sources of ignition and strong oxidizers. Containers must be tightly closed to prevent dust accumulation and moisture ingress. Storage areas should minimize dust generation and be equipped with appropriate fire suppression systems. Keep Carbon Black in labeled, corrosion-resistant containers and handle in accordance with proper safety guidelines. |
| Shelf Life | Carbon Black typically has an indefinite shelf life if stored in dry, cool, and tightly sealed conditions, protected from contamination and moisture. |
Competitive Carbon Black prices that fit your budget—flexible terms and customized quotes for every order.
For samples, pricing, or more information, please call us at +8615365186327 or mail to sales3@liwei-chem.com.
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Tel: +8615365186327
Email: sales3@liwei-chem.com
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On the factory floor, each batch of carbon black tells a story that’s often easy to overlook. We have spent decades refining our processes, listening to rubber technicians, masterbatch formulators, plastics processors, engineers designing weatherable coatings, and even ink specialists with a keen eye for jetness and gloss. While each industry asks for different properties, our guiding principle matches a simple observation: carbon black isn’t a filler—it’s an ingredient that demands careful crafting, reliable consistency, and honest knowledge about how it interacts with other raw materials.
In daily work, we see carbon black as the fine powder that gives so much utility to so many industries. It’s produced by the partial combustion of heavy petroleum products or natural gas, with the structure and surface area tailored through controls in feedstock, furnace temperature, and reactor conditions. The differences between types matter far more than the untrained eye expects. Grades with higher surface areas, measured as BET or CTAB value, provide deeper pigmentation and reinforcement strength, while lower-structure varieties reduce viscosity for smooth, flexible compounds.
On our lines you’ll typically encounter furnace black, channel black, acetylene black, and thermal black, although most of the modern volume goes to furnace blacks because they offer the widest cost-to-performance balance. We maintain a series of specific grades under our model portfolio. For example, our N330 remains a workhorse. Clients in tire tread compounding have come to trust it for dependable reinforcement and abrasion resistance. N550, with lower structure and moderate tint strength, finds favor in seals, hoses, damping components, and many plastics requiring easier processing. Our special black series, covering a spectrum of surface chemistries and finer particle sizes, handles critical colorant and conductivity needs in polymers, printing, and electronics.
Some buyers see carbon black as just carbon percentage, moisture, or bulk density, but our teams track a list much longer than any simple datasheet shows. We log Iodine adsorption numbers, oil absorption (DBP), tinting strength, and sieve residue. The rationale is simple: in rubber compounding, a minor shift in aggregate clustering or surface reactivity changes dispersion, compound viscosity, and ultimately, finished product performance. Our QA specialists run OAN, OAP, and STSA protocols daily, not just for regulatory audit, but to truly understand what comes off the line.
Let’s take a practical example. A cable insulation producer searching for conductivity isn’t satisfied by ordinary black. For their needs, we manufacture specific conductive grades with high structure, precise particle control, and low sulfur. In contrast, color masterbatchers working for automotive applications ask for the deepest possible black tone. For them, our special carbon blacks present a small particle diameter—often below 20 nanometers, with narrow distributions—and our reactors target minimal ash and residue. Rather than just selling by a spec sheet number, we adapt our pelletization, moisture extraction, and post-treatment steps to support their end-use reality.
We’ve watched customers attempt to substitute off-grade or bulk carbon black to cut costs. Problems often follow. In a tire, substandard black can increase rolling resistance, decrease wet traction, or accelerate cracks, regardless of the specs on paper. In inks or coatings, a mismatch in particle size leads to unpredictable jetness or gloss, and a shift in surface chemistry might foul up dispersion in resin. Carbon black manufacturers don’t just mix and ship; in reality, we walk the production lines with clients, tweak blends, and solve surface migration or agglomeration headaches together.
When a plastic compounder wants to shift from an N220 to an N330, we provide not just a COA, but technical feedback. We show how this change impacts melt flow in the extruder, pigment loadings, and UV stability. In the rubber shop, if a seal compound slips out of spec, we often go back to the black used—a small uptick in volatile content or oversized granules may have disrupted the entire batch. Our commitment means frequent site visits, robust sampling, and open labs where customers can test without risk.
Talking with technicians and plant engineers over the years, we’ve learned that not all carbon blacks behave the same, even within a tightly defined model range. Our furnace black models, like N234, N326, or N660, reveal their real value only when seen in action. The balance between surface area, structure, and cleanliness determines dispersibility and reinforcement. For instance, the N234 model, with high surface area, serves especially well in premium high-performance tires, where grip and abrasion resistance matter more than price point. N660, by contrast, trades some reinforcing strength for easier mixing and greater processing flexibility, ideal for large molded products and industrial hoses.
It’s a mistake to assume carbon black model numbers can be swapped without fuss. Our labs have supported clients who tried, only to face extruder clogging, unexpected color changes, or poor weatherability. That’s why we trace every model’s performance not just by the test results in our own hands, but by feedback from production lines around the world.
Most resellers and general suppliers rely on catalogue values. As the manufacturer, we answer for what really happens in the customer’s kneader, extruder, calender, or dispersion vessel. Tiny changes in feedstock, pelleting temperature, or reactor residence time can create significant downstream shifts—sometimes unnoticeable in early QC, but all too real during scale-up or under field exposure. The difference between an N330 and a supposed “equivalent” from a secondary supplier becomes clear when extrusion temperatures fluctuate, when humidity spikes, or during a switch in polymer grade. We’ve seen this enough to track not only standard properties, but also subtle cues in flow characteristics, softening points, and long-term stability.
Some carbon black models in our range carry post-treatment options—such as acid washing, oxidation, or surface grafting—that turn a basic reinforcing black into a specialized additive for electrical conductivity, anti-static performance, or low-PAH (polycyclic aromatic hydrocarbon) applications in food and pharma packaging. We map these customizations with careful process monitoring, electing for tighter particle size controls or different after-treatments based on the feedback from converting plants and quality assurance departments.
Modern carbon black faces tougher demands each year as global markets impose stricter regulations and new applications emerge. A car manufacturer now asks for pigment blacks with low PAH content, while electronics suppliers want conductive blacks with particle size distribution narrowed to within high single digits. We run on-site audits at client factories, send technical managers to troubleshoot compounding failures, and invite partners to our application labs. Sometimes, formulas need real troubleshooting—not just raw ingredient swaps—so we commit to pilot runs and compatibility testing.
Our teams aren’t shy about sharing direct failures—if a carbon black grade tracks too high in nitrogen, for example, it can cause unexpected odor or color shifts in sensitive polymer compounds. If moisture content rises during humidity spikes, we adjust drying temperatures and packaging processes, not just to meet a standard, but to address real shipment conditions in countries with different climates.
Many customers not directly involved in process chemistry see little more than packaging and a COA. To us, traceability and consistency define the real cost and value of carbon black. Behind the scenes, our data logs cover not just batch properties but trends over months, alerting us to any drift in key properties. If a reactor feedstock shifts in aromatic content or impurity level, we adjust furnace parameters to prevent subtle shifts in color or reinforcement. Beyond raw data, our technical support follows feedback from customers experiencing processing hitches—sometimes years after a formulation was initially validated.
Traceability goes hand in hand with certifications—whether it’s ISO 9001, automotive-specific IATF, or regionally mandated REACH and RoHS compliance. As a chemical manufacturer, we carry the burden and responsibility for each ton we supply, often fielding technical support calls and site visits across the entire lifecycle of an end product. The goal isn’t just to pass audits, but to make life easier for the compounder dealing with batch-to-batch consistency and the procurement staff comparing true total cost of use.
From years in the industry, we’ve seen the pitfalls in substituting generic carbon black for tailored models. Problems ripple out in unexpected ways: tire companies lose wear resistance; plastic processors encounter unanticipated pigment migration; cable producers find a drop in electrical performance. Our response includes troubleshooting sessions on site, in which we help partners map the root causes—often with joint lab work and pilot plant runs. We help review formulation windows, explore slight adjustments in dispersant or processing aid packages, and sometimes devise a custom model that answers a client's unique combination of desired mechanical, coloristic, and regulatory properties.
For those developing high-performance plastics or elastomers, we offer direct lab-to-lab collaboration. Material qualification doesn’t stay at the paperwork stage; our technical managers support real compounding trials, application testing under UV, mechanical loading, or heat aging, and continually refine recommendations based on pilot-scale results. These cooperative efforts let us prevent many issues before they reach commercial scale and save time lost to failed product launches due to mismatched pigment or filler grades.
As regulations and consumer pressure increase, new requirements for carbon black develop. Food contact, toy safety, and clean-room polymer applications call for carbon black with ultra-low PAH, nitrosamine, or metal content, sometimes down to the ppb level. We have built dedicated lines and QA methods to support these applications, understanding that food-grade and medical-grade markets tolerate no compromise.
In recent years, sustainability and environmental impact matter more each day. This isn’t just about controlling emissions or meeting environmental audit requirements. We look at the full cycle: increasing feedstock efficiency, lowering energy use per ton, and constantly improving pelletizing and packaging methods to cut dust and waste. Carbon black manufacturers like us know that simply shifting to “green” labels isn’t enough; the changes must carry through in actual process improvements, traceable outputs, and auditable supply chains. When customers request CO2 footprint data or lifecycle analyses, we provide real production numbers, not just marketing figures.
Every year brings new technical questions from our partners, ranging from resistance to UV aging in solar panel materials, to electrostatic discharge control in sensitive packaging, to ultra-dense black effects in automotive piano black interiors. We see our role not just as commodity suppliers, but as team members in a constant series of improvement cycles. We share what works, advise on alternatives when supply disruptions loom, and never hide process limitations. Experience has taught us humility and the need for genuine partnership: every carbon black order is more than just tons shipped—it's a pledge of performance, support, and transparency.
To anyone working with carbon black, our advice remains the same: engage the manufacturer early, share your exact application needs, and invite technical collaboration from both sides of the process. The best results flow from real dialogue, not just specification sheets. As manufacturers, our pride comes from knowing what happens inside reactors and finishing lines isn’t just theory—it’s the sum of tens of thousands of hours on the ground, learning from every success and mistake.
Whether you’re launching a new EV tire, updating a printing ink formula, or investing in anti-static plastics, thoughtful selection of carbon black pays dividends down the line. Models aren’t simply numbers—they are the product of careful materials science, operational stability, and continual improvement with feedback from the real world. We welcome direct questions, test requests, and tough process challenges.
As a carbon black manufacturer, our commitment is to deliver useful, consistent, and safely produced additive—woven into the structure of thousands of end products. The benefit is clear: each grade in our portfolio comes with both legacy and evolution, offering a foundation for success across markets that demand more each year.