In practical alchemy, mercury II oxide (HgO) is often called the "Red Precipitate," with its compound Mercuric Amidochloride (Hg(NH2)Cl),...

Diana's Tree ( Arbor Diana or Dianae ) is one of the most intriguing creations of alchemy. Its delicate branches of crystallized silver...

Iodine (I) is an essential element in biology, industry, science and health. It's known for its intense violet gas and strong odor....

Scheele's Green is a rich, vibrant green. Its color appeal surpasses that of the copper carbonate paints of the late 18th century and...

Chlorine (Cl) is a vital element in nature, used in industry as a disinfectant. Characterized by its highly reactive habits, chlorine is...

Carl Wilhelm Scheele (1742 - 1786) is a self-taught German-Swedish chemist whose work has strong impact on chemical sciences of the day....

Copper (II) sulfate CuSO4 yields a vivid color and widespread applications. Also known as blue vitriol in alchemy and chalcanthite in...

Lye or sodium hydroxide (NaOH) is a vital part of human history. Also called caustic soda, lye is a white odorless solid. A strong...

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

The microbes of concrete corrosion include bacteria, fungi and algae. Their purpose in life is to break down and decompose matter, and...

Metal salts are compounds created from metals and acids. In history and today they enjoy uses in beauty, natural health, chemical...

Mosaic gold is also known to alchemists as aurum musivum or aurum mosaicum due to its mottled formation. Forgotten in the data fields...

Chloroauric acid H[AuCl4] is a yellow solution created in the 18th century. A gold(III) salt, chloroauric acid is an innovative compound,...

Perfumes are grouped according to their strengths. Every fragrance has a purpose, from a fresh splash of rose or mint to mysterious...

DIY perfumes are all about crafting a unique signature scent or giving fragrance as a gift, the benefits of aromatherapy and expression...

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

Hydrochloric acid is a powerful chemical. Used from old alchemical practices to modern times, this colorless, pungent-smelling liquid is...

The Renaissance brings a unique approach to medicine. Based on the Four Humors theory of health the Galenic way, purging the body of...

Antimony oxychloride or Powder of Algaroth is a compound first appearing in 15th century Europe. During the Renaissance Powder of...

Radon (Rn) is part of the noble gas family. Colorless, odorless, and tasteless, radon presents unique characteristics and effects on...