Glycerin, also known as glycerol or glycerine, is a simple polyol compound with the chemical formula C3H8O3. This colorless, odorless,...

Perfumes are prized in ancient civilizations such as Mesopotamia, Egypt, India and China. The word “perfume” comes from Latin per fumum ,...

Antimony (Sb) from the ore stibnite, is one of the elements known by the ancients, a primary source of black powder kajal or kohl. With...

Earth of Chios is a white to gray powdery mineral soil or fine grained clay found on the Greek island of Chios. Earth of Chios or Chian...

Caterina Sforza (1463-1509) is a remarkable figure of the Italian Renaissance, leading a colorful and controversial life. Alchemy is...

Alum is an ingredient in processes such as dyeing fabric, tanning hides and water purification. Alum is ubiquitous in ancient and...