Arhyel U. Ndahi: RAW MATERIALS NEEDED FOR SCHOOL CHALK PRODUCTION

1. The Plaster of Paris (POP): The POP is the major raw material for school chalk

production. Plaster of Paris (POP) is a white powder; scientifically called “Calcium

Carbonate” that when mixed with water, forms a quick-hardening paste. It is used in

the arts for sculpting and making casts, and in medicine for molding casts around

broken limbs.

2. Lubricants: Another important raw material for school chalk production is

Lubricants. It could be any cooking oil or coconut oil, mixed with Kerosene. It is used

for lubricating the Chalk Mold to prevent the POP from sticking to it.

3. Clean Water: Water is also a vital element in school chalk production; this is

because it is used for mixing all the ingredients.

4. Ultramarine Blue (Optional): Ultramarine Blue is used to give the chalk a dark

blue or sky blue color depending on its concentration. If you intend to produce only

white chalk, then you wouldn’t need to add ultramarine blue.

Arhyel U. Ndahi