Dihydroxyacetone /ËdaÉªhaÉªËdrÉksiËaesÉ¨toÊn/ , ËdaÉªhaÉªËdrÉksiËÃ¦sÉ¨toÊn OR, dha also known as, glycerone is a simple (carbohydrate a) triose with Formula C 3H 6o. 3HA is a hygroscopic white crystalline powder. It has a sweet cooling taste and a characteristic odor. It is the simplest of all ketoses and has no chiral center or optical activity. The normal form is a dimer which is slowly soluble in one part water and 15 parts ethanol.
The Earth's inner core is the Earth's innermost part. It is primarily a solid ball with a radius of about 1,220 kilometres (760 miles), which is about 70% of the Moon's radius. It is composed of an ironânickel alloy and some light elements. The temperature at the inner core boundary is approximately 5700 K (5400 Â°C).
The core is made mostly of the metals iron and nickel. It consists of two parts --- a liquid outer core and a solid inner core. Together, the inner and outer core are 3,486 kilometers thick.