The good and the bad of the fitbit. By , May 19, 2014 at 9:28 am. The fitbit flex is a lightweight bracelet you wear that tracks your steps. My parents gifted me a fitbit flex for Mother's Day. They know me well and my interest in staying healthy and in shape.
Acenaphthylene CAS Number: 208-96-8 What is acenaphthylene? Acenaphthylene is one of a group of chemicals called polycyclic aromatic hydrocarbons, PAHs for short. PAHs are often found together in groups of two or more. They can exist in over 100 different combinations but the most common are treated as a group of 15. PAHs
There has been an exponential growth in the number of substances indexed by CAS, with the number doubling between 2009 and 2015 as shown in this graph: Key point: CAS numbers identify the chemical, but not its concentration or specific mixture. For example, hydrogen chloride (HCl) has the CAS number 7647-01-0. That CAS number will appear on containers of anhydrous hydrogen chloride, a 20% solution of HCl in water, and a 2.0 molar solution of HCl in diethyl ether. The numbers you see on trucks on the highway are not CAS Numbers, but U.S. Department of Transportation (DOT) mandated UN/NA codes which are not necessarily specific to each chemical.