For procurement managers, R&D scientists, and formulators in the chemical and materials industries, a deep understanding of product specifications is paramount. When it comes to carbon black, especially the widely utilized N100 to N700 series, deciphering the technical data is key to selecting the right grade for optimal performance. As a leading carbon black manufacturer and supplier based in China, we aim to demystify these specifications and guide you in making informed purchasing decisions.

The ASTM (American Society for Testing and Materials) classification system for carbon black, particularly the N-series, provides a standardized way to categorize different grades based on their physical and chemical properties. These properties directly influence how the carbon black performs as a reinforcing agent, pigment, or additive. Understanding these metrics ensures you can buy carbon black that precisely meets your application requirements.

One of the most critical specifications is Iodine Adsorption (g/kg). This measures the surface area of the carbon black particles. A higher iodine adsorption value generally indicates a smaller particle size and a larger surface area. For applications requiring high reinforcement, such as tire treads, carbon blacks with higher iodine adsorption values (like those in the N100 and N200 series) are preferred. Conversely, for semi-reinforcing applications or where tinting strength is paramount, different grades might be more suitable. When sourcing, inquire about the iodine adsorption values to gauge the reinforcement potential.

Another vital parameter is DBP (Dibutyl Phthalate) Absorption (10-5m3/kg). DBP absorption is a measure of the carbon black's structure, which refers to the degree of aggregation and branching of primary particles. Higher DBP absorption typically indicates a more complex, branched structure. This structural aspect significantly impacts properties like modulus, hardness, and electrical conductivity. For applications demanding high modulus or conductivity, carbon blacks with higher DBP absorption are often chosen. As a supplier, we provide these detailed specifications to aid your selection process.

Other important specifications include CTAB surface area (103m2/kg) and STSA (Single Ball Tire Adsorption) surface area (103m2/kg), which further quantify the external surface area and are crucial for understanding dispersion and interaction with polymers. Tinting strength (%) is a key indicator for pigmentary applications, determining how effectively the carbon black colors a given medium.

At our manufacturing facility, we meticulously control these parameters during production to ensure that each grade of carbon black meets its intended performance profile. Whether you are seeking to purchase carbon black for demanding tire applications, durable plastics, vibrant inks, or protective coatings, understanding these specifications will empower you. We offer a broad portfolio of N100-N700 series carbon blacks, and our team is ready to provide comprehensive technical data and competitive carbon black prices.

For businesses looking for a reliable carbon black manufacturer and supplier in China, we offer not just high-quality products but also the expertise to help you select the optimal grade. Do not hesitate to request a quote or samples to evaluate our carbon black for your specific industrial needs.