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.
Inca Society. At the top of Inca society was the emperor, the Sapa Inca. (His title means unique Inca). The Incas believed their ruler was descended from the sun god and he was treated with great respect.nca Society. At the top of Inca society was the emperor, the Sapa Inca. (His title means unique Inca). The Incas believed their ruler was descended from the sun god and he was treated with great respect.