Carbon Black FW-200
Carbon Black FW-200

Carbon Black FW-200

Colour Black FW 200 is a post-oxidized, high-color gas carbon black (HCG) recognized as an industry gold standard for achieving exceptionally high jetness (deep black tone) and a bluish undertone in premium coatings, plastics, and inks. Produced via the gas black process and subjected to an after-treatment, it features an ultra-fine primary particle size (~13 nm), high surface area (~550 $\text{m}^2/\text{g}$), and low pH (1.0–4.0). It is primarily utilized in high-end automotive OEM finishes, refinish paints, metallic tinting, and luxury plastic formulations.

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Overview & Classification

Colour Black FW 200 is classified under Pigment Black 7 (C.I. 77266). Unlike standard ASTM furnace blacks used in rubber reinforcement, FW 200 belongs to the specialty channel/gas carbon black family designed specifically for pigmentary performance.

The chemical after-treatment (oxidation) introduces oxygen-containing polar functional groups (such as carboxyl, hydroxyl, and quinone groups) onto its particle surface. This surface oxidation dramatically lowers its pH, significantly improves wetting and dispersibility in polar binder systems, and prevents flocculation in liquid coatings.

Key Performance Characteristics

  • Maximum Jetness (Deep Black Tone): Delivers one of the highest relative blackness values ($\text{M}_y \approx 130\text{--}143\%$) available in the market.

  • Bluish Undertone: Offers a desirable bluish undertone that enhances color depth and contrast in metallic basecoats and high-gloss clearcoats.

  • Post-Oxidized Surface Chemistry: Low pH (acidic surface) enhances compatibility with polar resins (e.g., acrylics, alkyds, polyurethanes) and improves pigment stability.

  • High Lightfastness & Weatherability: Rated 8 on the ISO 105 mass tone lightfastness scale, ensuring resistance to UV degradation and color fading.

Typical Technical Specifications

Property / Parameter Typical Value / Range Unit Test Standard / Method
Color Index Pigment Black 7 (77266) — C.I. Name
Primary Particle Size ~13 nm TEM
BET Specific Surface Area ~550 $\text{m}^2/\text{g}$ ISO 9277 / ASTM D6556
Oil Absorption Number (OAN) ~160 (Powder) / 420 (Beads) $\text{ml}/100\text{g}$ ISO 787/5 / ASTM D2414
pH Value $1.0 - 4.0$ — ISO 787/9
Relative Blackness Value ($\text{M}_y$) $129.2 - 142.8$ % PA 1540
Tinting Strength (vs. IRB) $110 - 126$ % ISO 787/16
Heating Loss at 950°C (Volatiles) $18.0 - 22.0$ % DIN 53552
Sieve Residue ($45\ \mu\text{m}$) $\le 200$ ppm ISO 787-18
Light Fastness (Mass Tone) 8 Scale (1–8) ISO 105, B01

Primary Applications

  1. Automotive Coatings: Premium OEM automotive finishes, refinish paints, and high-gloss clearcoats requiring "piano black" jetness.

  2. Industrial & Architectural Coatings: Top-quality industrial paints, coil coatings, wood finishes, and tinting for metallic formulations.

  3. Plastics & Masterbatches: High-end engineering polymers, automotive interior parts, and luxury consumer goods masterbatches.

  4. Specialty Printing Inks: Fine screen inks, gravure inks, and specialty flexographic formulations requiring ultra-high opacity and dark tone.