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Calcium Carbonate · Filler Economics

How much titanium dioxide can calcium carbonate replace?

On a white product, calcium carbonate does not replace titanium dioxide — it extends it. TiO₂ carries the opacity; a high-whiteness, fine filler lets you displace a portion of it while holding whiteness and hiding in spec. The higher the filler's whiteness, the more you can displace — and the pigment you stop buying is worth far more than the filler you add.

The calculator below runs that on your own numbers. It never asserts a displacement figure — it shows what each point is worth, and your lab confirms how far your line goes with a free sample.

Leave blank to see the full range. This is a number your lab verifies on your line.

What each point of displacement is worth

Each 1 point of TiO₂ you displace ≈ $1.14/MT — about $3,420/yr

The value scales with how much you can displace. That amount is what a free sample proves on your line.

If you can displace… (your volume & prices)

TiO₂ displacedSaved / MTSaved / yr
5%$6$17,100
10%$11$34,200
15%$17$51,300
20%$23$68,400
25%$29$85,500
30%$34$102,600

Typical for general white line: 10–30% displacement — ordinary 90–96% filler sits at the low end; a ≥98 whiteness grade raises the ceiling toward the high end. Verify yours on your line.

How to read this honestly

Calcium carbonate extends titanium dioxide — it does not replace it one-for-one. TiO₂ provides the opacity; filler provides almost none. A high-whiteness (≥98) fine grade lets you pull more TiO₂ before whiteness or hiding falls out of spec than an ordinary 90–96% grade does. How far you can go is set by your formulation and confirmed on your own line — which is exactly what a free qualifying sample is for.

Prove it on your own line

A free sample (under a tonne) with a per-lot certificate of analysis, dispatched within 48 hours. Your numbers above come with it, so we can discuss your actual economics — not a generic claim.

Indicative figures, not a quote. Your numbers are used only to show your own economics — no obligation. See our privacy policy.

The two levers

The value isn't the filler price — it's what the filler saves

Titanium-dioxide extension is the larger lever on any white line. Because TiO₂ is the most expensive input in the formula, displacing even a modest share of it saves far more than the cost of the filler that takes its place. A ≥98 whiteness grade is what raises how much you can displace before the finished product drifts out of spec.

Resin displacement is the second, smaller lever: every tonne of filler replaces costlier resin, and the saving grows as resin prices rise. It is real, but you likely already capture most of it with your current filler — the switch-specific gain there is only the filler price difference.

Kantor Materials produces its high-whiteness calcium carbonate (KC-Series, whiteness ≥98, brightness ≥95) at the Yên Bái limestone belt in Vietnam and supplies it producer-direct. The calculator uses your numbers and public pigment prices only — no Kantor cost or price is used or shown. Not sure which KC grade your line needs? The grade selector answers that from your application in two clicks.

Frequently asked

Does calcium carbonate replace titanium dioxide?

No — it extends it. Titanium dioxide provides opacity and hiding power because of its high refractive index (~2.7); calcium carbonate (~1.6) provides very little on its own. A high-whiteness, fine calcium carbonate lets a formulator displace a portion of the TiO₂ while holding whiteness and opacity in spec, but it does not replace it one-for-one.

How much titanium dioxide can a calcium carbonate filler save?

It depends on the application, the current TiO₂ loading, and the filler's own whiteness and fineness — so the honest answer is a range you verify on your own line, not a fixed number. The calculator shows what each point of displacement is worth on your volume and prices; a qualifying sample confirms how far your line can actually go.

Why does filler whiteness matter for titanium dioxide extension?

Higher filler whiteness raises the ceiling on how much TiO₂ you can remove before the finished product's whiteness or hiding falls out of spec. An ordinary 90–96% grade limits displacement; a ≥98 whiteness grade lets you displace more — which is where the savings come from, because the pigment you stop buying is worth far more than the filler you add.

How do I confirm the savings on my own line?

Request a free sample (under a tonne) with a per-lot certificate of analysis and qualify it on your own equipment against the grade you run today. Kantor Materials dispatches samples within 48 hours. The calculator gives you the reason to test; the sample gives you the proof.