Dipropylene glycol methyl ether (DPGME) is one of the most commonly used propylene glycol ethers in industry and is discussed in a recently published NEG/NIOSH document. DPGME is a collective term describing a mixture of structural isomers.
The Incas were a civilization in South America formed by ethnic Quechua people also known as Amerindians. In 1400AD they were a small highland tribe, one hundred years later in the early 16th century the Incas rose to conquer and control the largest empire ever seen in the Americas forming the great Inca Empire.
The Inca Empire, or Inka Empire (Quechua: Tawantinsuyu), was the largest empire in pre-Columbian America. The administrative, political and military center of the empire was located in Cusco in modern-day Peru.The Inca civilization arose from the highlands of Peru sometime in the early 13th century.he official language of the empire was Quechua, although hundreds of local languages and dialects of Quechua were spoken. The Inca referred to their empire as Tawantinsuyu which can be translated as The Four Regions or The Four United Provinces.