It’s lightweight, smooth, durable, and static-free. In the 1968 Winter Olympics, French skiers first used spandex in their competition suits. It is widely used in sports apparel like tight-fitting garments, professional swimsuits, cycling gear, and gymnastics attire. #chemed #DYK

As temperatures rise, it’s time for water fun. Swimwear is essential, and spandex, known as “Lycra,” is a key fabric component. Invented by DuPont in 1958, it is an elastic fiber made from polyether-polyurea copolymers. It can stretch up to 600% and return to its original shape.

Researchers have also found this pigment in the Terracotta Army. In traditional medicine, minium was used to treat symptoms such as ‘coughing, stomach reflux, epilepsy, and insanity, and to remove heat and reduceqi’, but it has been restricted due to the risk of Minium poisoning.

As early as the Roman Empire, minium was used as a red pigment, and people at the time would produce minium by calcining lead white [Pb(OH)₂ · 2 PbCO₃] at high temperatures. There are also related records of artificial minium in the literature of the Warring States period. #DYK

more info about picric acid:
#iteachchem
#chemed
#STEMeducation
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more info about picric acid:
#iteachchem
#chemed
#STEMeducation
#KingDraw

In 1771, Peter Woulfe created picric acid, a yellow, bitter compound used in dyes. It’s highly explosive and was used in early military explosives.However, its tendency to react with metal and its sensitivity to shock and heat made it dangerous, causing accidental explosions #DYK

Eugène Delacroix's La Liberté guidant le peuple are thought to have used Mummy Brown. Later, it was gradually replaced by other pigments due to the shortage of 'raw materials', coupled with the pigment that was easy to crack, and the lack of gloss. #iteachchem #chemed

Mummy Brown is a brown pigment that appeared in Europe around the 16th century. It is made from Egyptian mummy powder mixed with turpentine and myrrh. It became popular among European painters in the mid-18th and 19th centuries as a 'deep, warm and vibrant' brown pigment. #DYK

🌟 Dear KingDraw users and fans,
Our team will take a well-deserved break to celebrate International Labor Day from May 1st to May 5th. During this time, we won't be posting on social media. If you need assistance, please email us. We'll get back to you ASAP once we're back!🎉

more info about atractyloside (ATR).
#iteachchem #chemed #STEMeducation #KingDraw

Chamaeleon gummifer is a perennial herb-producing a stemless, pinkish flower. It is native to the Mediterranean basin, where it can be found in various habitats. The plant has a history of use in folk medicine, but it is very toxic due to the presence of atractyloside (ATR). #DYK

more info about oleanolic acid:
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Grapes🍇, an ancient fruit, develop a natural waxy film during growth, not pesticide residue. This layer, rich in oleanolic acid, seals in moisture and protects against pathogens. Similar coatings occur on blueberries and plums. #DYK #iteachchem

more info about Skatole:
#iteachchem #chemed #STEMeducation

What scientific fact made you question reality? In chemistry, we discovered 'Skatole' - extracted from poop! It stinks strong but smells like jasmine when diluted. From fragrance to flavoring, it's a fascinating journey! #DYK #chemed

more info about carmine:
#iteachchem #chemed #STEMeducation #KingDraw