Search results
Results from the WOW.Com Content Network
Bepanthen eye and nose ointment (Germany) A vial of nasal spray containing panthenol, manufactured in Italy In pharmaceuticals, cosmetics, and personal-care products, panthenol is a moisturizer and humectant, used in ointments, lotions, shampoos, nasal sprays, eye drops, lozenges, and cleaning solutions for contact lenses.
For example, ethyl methyl ether (CH 3 OC 2 H 5), diphenylether (C 6 H 5 OC 6 H 5). As for other organic compounds, very common ethers acquired names before rules for nomenclature were formalized. Diethyl ether is simply called ether, but was once called sweet oil of vitriol. Methyl phenyl ether is anisole, because it was originally found in ...
A chemical element, often simply called an element, is a type of atom which has a specific number of protons in its atomic nucleus (i.e., a specific atomic number, or Z). [ 1 ] The definitive visualisation of all 118 elements is the periodic table of the elements , whose history along the principles of the periodic law was one of the founding ...
This Wikipedia page provides a comprehensive list of boiling and freezing points for various solvents.
Diethyl ether, or simply ether, is an organic compound with the chemical formula (CH 3 CH 2) 2 O, sometimes abbreviated as Et 2 O. [ a ] It is a colourless, highly volatile , sweet-smelling ("ethereal odour"), extremely flammable liquid .
Here [Ne] refers to the core electrons which are the same as for the element neon (Ne), the last noble gas before phosphorus in the periodic table. The valence electrons (here 3s 2 3p 3) are written explicitly for all atoms. Electron configurations of elements beyond hassium (element 108) have never been measured; predictions are used below.
In chemistry, alkyl is a group, a substituent, that is attached to other molecular fragments. For example, alkyl lithium reagents have the empirical formula Li(alkyl), where alkyl = methyl, ethyl, etc. A dialkyl ether is an ether with two alkyl groups, e.g., diethyl ether O(CH 2 CH 3) 2.
Perfluoroethyl 2,2,2-trifluoroethyl ether 27.89 °C; Perfluoroethyl ethyl ether 28 °C; Perfluorocyclopentadiene C 5 F 6 28 °C [152] 2-Butyne 29 °C; Digermane 29 °C; Perfluoroisopropyl methyl ether 29 °C; Trifluoromethanesulfonyl chloride 29–32 °C [153] Perfluoropentane 29.2 °C; Rhenium(VI) fluoride 33.8 °C; Chlorodimethylsilane 34.7 °C