High quality Chalk filler

Product information

Chalk whiting is a versatile filler, useful for textured wall finishes as it provides high brightness and excellent whiteness. Among these, it is also profitable for rigid and flexible PVC, epoxy compounds, adhesives, rubber, printing inks, and paper products.

Chalk is a versatile mineral filler with attributes that make it valuable for use in various applications such as:

• Paints and coatings
• Rubber and plastics
• Sealants and adhesives

The fine soft nature of chalk coupled with a smooth, round particle shape and carefully controlled particle size distribution make it an ideal filler for various applications. Our unique deposit is free from the abrasive flints normally associated with chalk whiting.

General properties cover:

• Impressive colour opacity,
• High brightness,
• Low oil absorption,
• Good temperature stability,
• Easy to mix.

Our chalk standard grades

Chalk packaging

Our product range is available in paper sacks, big bags or bulk.

Applications

Chalk filler is a fine, high-purity calcium carbonate used to enhance performance in various industrial applications. Some key applications include:

Paints & coatings

• Improves opacity, brightness, and smoothness in decorative and industrial paints.
• Enhances durability and provides cost-effective bulk in coatings and emulsions.

Rubber & plastics

• Used as a functional filler to enhance flexibility, strength, and weight reduction.
• Improves processing efficiency and mechanical properties in polymer and rubber products.

Sealants & adhesives

• Provides reinforcement and consistency in sealants and adhesives for better bonding.
• Enhances viscosity and stability in construction and industrial applications.

Mineral information

Chalk, a calcium carbonate, is comprised of very fine calcite crystals each less then 1 micron in diameter. These crystals are derived from the disintegration of complex ring like structures. The structures are calcareous skeletal remains of minute marine organisms known as coccoliths. The fine soft nature of our products coupled with a smooth round particle shape and carefully controlled particle size distribution make it an ideal filler.

Physical properties of Chalk:

Chemical properties of Chalk:

Below you can see the composition of each of the following chemicals: Calcium Oxide (CaO), Silica Dioxide (SiO₂), Aluminium Oxide (Al₂O₃), Potassium Oxide (K2O), Iron (III) Oxide (Fe₂O₃), and Magnesium Oxide (MgO) in Chalk.

Chalk mineral origin

LKAB Minerals manufacture our range of Chalk products in the UK from a local high-quality soft white deposit. This unique deposit is free from the abrasive flints normally associated with chalk whiting.

Toxicology

The mineral is non-toxic and non-hazardous.

To find out any further information, please fill in the contact form in the bottom right and a representative will be in contact.