p-Bromoacetophenones

Chinese name: The bromoacetophenone; 1 - (4 - bromophenyl) ethanone; 4 - bromo -1 - acetyl benzene; bromophenyl methyl ketone p; 4 - bromoacetophenone; 4 - acetyl-bromophenyl English name: p-Bromoacetophenones Molecular structure: aromatic C and carbonyl C, O atoms are sp2 hybrid orbitals form σ bond. Methyl C atoms form sp3 hybrid orbitals σ bond. Molecular weight or atomic weight: 199.05 Density: 1.647 (25 °C) Melting point (°C): 50 51 °C Boiling point (°C): 255.5 (98.125E3Pa); 130 (2.000E3Pa); 117.7 (0.933E3Pa) Toxicity LD50 (mg / kg): there is a strong irritant, but also stimulate the skin and mucous membranes. Characters: From the ethanol precipitation were leaf-shaped colorless crystal. Easily volatile with steam. Dissolution conditions: slightly soluble in water, soluble in alcohol, ether, benzene, carbon disulfide, acetic acid and Dan Youying. Usage: perfume materials; medicine and organic synthesis intermediates, also used as dye materials.