Name: Carbon Black FW200 Type High Jetness (Offset/Flexo Grade)
Brand: Coatingsink
SKU: carbon-black-fw200-high-jetness
Availability: InStock

Question 1

Why does high-surface-area carbon black like FW200 require special dispersion conditions?

Accepted Answer

FW200-type carbon black has a BET surface area of ~490 m²/g, which creates very high demand for dispersant and wetting agent. Insufficient dispersant loading causes extreme viscosity increase and instability. Use high-shear dispersing equipment (bead mill or triple roll) with the correct dispersant-to-pigment ratio (typically 30–60 % DA on CB weight), and pre-wet with low-viscosity resin before milling.

Question 2

What is the expected optical density of a 1 µm ink film using FW200-type carbon black?

Accepted Answer

A well-dispersed 1 µm film at 5 % pigment concentration typically yields an optical density of 1.5–1.8 (Status T), which is significantly higher than standard furnace blacks (e.g., Printex 90 type) at the same film weight. This allows black ink formulators to achieve target density with a thinner ink film or lower pigment loading.

BET Surface Area	460–520 m²/g
DBP Absorption	340–380 mL/100 g
Ash Content	≤0.1 %
pH (aqueous suspension)	3.0–4.0
Blackness (jetness, My)	≥140

Carbon Black FW200 Type High Jetness (Offset/Flexo Grade)

Specifications

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