Limestone
The fundamentals
Produces shades:
Latin name: Lapis calcarius
Pigment: Calcium carbonate
E-number: E170
Three facts about limestone
Limestone is a sedimentary rock made by an accumulation marine animal shells.
It takes less than one million years for limestone to form.
Crushed marble is also a source of calcium carbonate
What you should know about calcium carbonate from limestone
Oterra's stable, industry-leading formulations allow you to benefit from all of the advantages of calcium carbonate as a natural food color while minimizing any intrinsic challenges associated with this material.
Calcium carbonate is a mineral. It is very stable and can be dispersed or suspended in water or a food matrix.
Calcium carbonate is a good replacement for titanium dioxide
Strengths
Good heat stability
Challenges
Not suitable for low pH applications
