Products Description of Carbon Black CAS#1333-86-4
Carbon black is a finely divided carbon material with a wide range of industrial applications. When dispersed in air, it may present a fire or explosion risk in the presence of an ignition source, and it may undergo slow spontaneous combustion when exposed to water. Due to its fine particle size, inhalation exposure should be controlled, with an occupational exposure limit (TLV) of 3.5 mg/m³ in air.
Carbon black is primarily used in the production of tires, rubber products, plastics, carbon paper, printing inks, and solar energy absorption materials. It is also widely applied as a black pigment, reinforcing filler, conductive additive, and functional material across various industries.
In the food industry, carbon black can be used as an edible black pigment and food coloring agent. It is applicable in products such as pastries, rice products, flour-based foods, candies, biscuits, and other food items within regulated usage limits.
Carbon Black Chemical Properties
| Melting point | 3550 °C(lit.) |
| Boiling point | 500-600 °C(lit.) |
| density | ~1.7 g/mL at 25 °C(lit.) |
| vapor pressure | <0.1 mm Hg ( 20 °C) |
| Fp | >230 °F |
| solubility | H2O: soluble0.1mg/mL |
| form | rod |
| color | Clear colorless |
| Specific Gravity | bulk 0.10/g/cm3 |
| Water Solubility | Insoluble |
| Merck | 141808 |
| Exposure limits | ACGIH: TWA 3 mg/m3 |
| OSHA: TWA 3.5 mg/m3 | |
| NIOSH: IDLH 1750 mg/m3; TWA 3.5 mg/m3; TWA 0.1 mg/m3 | |
| Dielectric constant | 2.5（Ambient） |
| Stability: | Stable. Combustible. |
| InChIKey | VNWKTOKETHGBQD-UHFFFAOYSA-N |
| LogP | 1.090 (est) |
| IARC | 2B (Vol. Sup 7, 65, 93) 2010 |
| EPA Substance Registry System | Carbon black (1333-86-4) |
| Hazard Codes | |
| OEB | B |
| OEL | TWA: 3.5 mg/m3 |
| WGK Germany | 3 |
| RTECS | FF5250100 |
| TSCA | Yes |
| Hazardous Substances Data | 1333-86-4(Hazardous Substances Data) |
| Toxicity | LD50 oral in rat: > 15400mg/kg |
| IDLA | 1,750 mg/m3 |
In the rubber industry, carbon black serves as an important reinforcing filler, improving the mechanical properties of rubber products. It is widely used in automotive tires, tire treads, sidewalls, solid tires, conveyor belts, hoses, industrial rubber products, and other applications. Carbon black reinforcement enhances tensile strength, abrasion resistance, elongation, and tear resistance of vulcanized rubber, making it suitable for high-performance tires, engineering tires, and industrial rubber components.
Carbon black is also used as a coloring pigment in paints, coatings, and inks. It is applied in the production of black paper, packaging materials for photographic products, carbon paper, typewriter ribbons, shoe polish, leather coatings, colored cement, and other black-colored materials.
Due to its excellent electrical conductivity, carbon black is used as a conductive agent in lithium-ion batteries, electronic components, anti-static rubber products, electrodes, and electronic brushes. It is also utilized in plastics, metallurgy, rocket propellants, and other specialized fields.
With its multifunctional properties, carbon black remains an essential raw material for rubber reinforcement, pigmentation, conductivity enhancement, and industrial material modification. Proper storage and handling procedures should be followed to ensure safe use.
