Sodium Hydrogen Carbonate 25KG – Marking Chalk.

Chemical Name: Sodium Hydrogen Carbonate

Common Name: Baking Soda / Bicarbonate of Soda

Formula: NaHCO₃

Pack Size: 25KG

Typically used for marking

Sodium bicarbonate is often used as a filler or base in chalk formulations.

In sports (like athletics, football, tennis), “marking chalk” is made of powder, safe, non-toxic materials like sodium bicarbonate or calcium carbonate to mark lines on fields or courts.

It is chosen because it is white, safe for skin contact, non-toxic, and easily washable with water or rain.

Ideal because:

Safe for human handling.

Produces bright white lines on sports grounds.

Environmentally friendly.

Comes in bulk packs which is suitable for schools, clubs or stadiums.