DHEA is a natural steroid that has been studied for its use in treating several mental health conditions, including mood disorder and PTSD. DHEA (5-Dehydroepiandrosterone) is a natural steroid produced in the adrenal glands, the gonads and the brain.It is the most abundant circulating steroid in humans. A form of DHEA, 7-keto DHEA (3-acetyl-7-oxodehydroepiandosterone), is claimed to have fewer side effects.HEA. DHEA is a natural steroid that has been studied for its use in treating several mental health conditions, including mood disorder and PTSD. DHEA (5-Dehydroepiandrosterone) is a natural steroid produced in the adrenal glands, the gonads and the brain. It is the most abundant circulating steroid in humans.
Silver Corrosion. Silver (Chemical symbol Ag) is a brilliant gray white metal that is quite soft and malleable. It is quite resistant to corrosion and does not oxidize easily, although it readily forms a surface tarnish of silver sulfide. A modern and comprehensive document on the subject is the second edition of the classic CORROSION BASICS textbook.
Either hexavalent chromium or trivalent chromium may be used to produce chrome. The electroplating chemicals for both processes are toxic and regulated in many countries. Hexavalent chromium is extremely toxic, so trivalent chrome or tri-chrome tends to be more popular for modern applications.In 2007 hexa-chrome was banned for use on automobiles in Europe.ither hexavalent chromium or trivalent chromium may be used to produce chrome. The electroplating chemicals for both processes are toxic and regulated in many countries. Hexavalent chromium is extremely toxic, so trivalent chrome or tri-chrome tends to be more popular for modern applications.