In IUPAC nomenclature, however, hexane is the unbranched isomer (n-hexane); the other four isomers are named as methylated derivatives of pentane and butane. IUPAC also uses the term as the root of many compounds with a linear six-carbon backbone, such as 2-methylhexane (C7H16), which is also called isoheptane.
Dentin is the substance between enamel or cementum and the pulp chamber. It is secreted by the odontoblasts of the dental pulp. The formation of dentin is known as dentinogenesis. The porous, yellow-hued material is made up of 70% inorganic materials, 20% organic materials, and 10% water by weight.
Portland cement clinker-overview. Portland cement clinker is a dark grey nodular material made by heating ground limestone and clay at a temperature of about 1400 Â°C - 1500 Â°C. The nodules are ground up to a fine powder to produce cement, with a small amount of gypsum added to control the setting properties.This page gives a thumbnail sketch.ortland cement clinker contains four principal minerals: 1  Alite: approximately tricalcium silicate (typically about 65% of the total). 2  Belite: approximately dicalcium silicate (typically about 15% of the total). 3  Aluminate: very approximately tricalcium aluminate (typically about 7% of the total).