For B2B buyers in the chemical and manufacturing industries, understanding the critical specifications of raw materials is fundamental to ensuring product quality and performance. Carbon Black, a vital industrial pigment and reinforcing agent, is no exception. As a leading Carbon Black manufacturer and supplier in China, we are committed to transparency and providing our clients with the detailed information they need to make informed purchasing decisions. This guide will walk you through the key specifications you should look for when you buy Carbon Black.

Key Carbon Black Specifications Explained

When evaluating Carbon Black grades like N220, N330, or N660, several parameters are crucial:

  • CAS Number: The Chemical Abstracts Service (CAS) number is a unique identifier for chemical substances. For Carbon Black, the primary CAS number is 1333-86-4. This ensures you are sourcing the correct material.
  • Purity: Purity levels are critical, especially for applications requiring minimal contaminants. Industrial grades typically boast high purity, often exceeding 99%. As your dedicated supplier, we guarantee the purity levels of our products meet industry standards.
  • Average Particle Size (APS): Measured in nanometers (nm), particle size significantly impacts properties like reinforcement and tinting strength. Grades like N220 have smaller particles (around 20-33 nm) for higher reinforcement, while larger particles in grades like N660 offer easier processing.
  • BET Surface Area: Measured in m²/g, this value indicates the total surface area available for interaction. Higher surface areas, typical in smaller particle size grades like N220, correlate with greater reinforcing and conductivity effects.
  • DBP Oil Absorption: Di-butyl phthalate (DBP) absorption, measured in cc/100g, is an indicator of the carbon black's structure and its ability to interact with polymers. Higher DBP absorption generally suggests a more complex structure and better reinforcement.
  • Tinting Strength: This refers to the pigmenting ability of the carbon black, indicating how effectively it imparts color. Higher tinting strength means less material is needed to achieve a deep black.
  • pH Value: The pH of carbon black dispersions can affect its compatibility and performance in certain formulations, particularly in paints and inks.
  • Volatile Content and Ash Content: These indicate the presence of impurities and are important for applications where purity is critical.

Sourcing High-Quality Carbon Black from China

Understanding these specifications helps you select the right Carbon Black for your needs, whether it's for enhancing rubber tires, coloring plastics, formulating inks, or improving battery performance. As a reliable Carbon Black manufacturer and supplier in China, we provide detailed technical data sheets for all our products, ensuring transparency and quality assurance.

We aim to make your procurement process as smooth as possible. By offering competitive prices and a stable supply of industrial-grade Carbon Black, we help your business thrive. If you need to purchase Carbon Black N330, N220, or N660, or require expert advice on grade selection, contact us today. We are your trusted partner for all your Carbon Black pigment and additive needs.