Iron(II) sulfide or ferrous sulfide (Br.E. sulphide) is a chemical compound with the formula FeS. In the oil/gas industry, iron sulfides are often present in a sour system due to reaction between corrosion products and hydrogen sulfide.
A material that conducts (see conduction) electricity poorly or not at all. If a voltage is applied to a dielectric, the atoms in the material arrange themselves in such a way as to oppose the flow of electric current. Glass, wood, and plastic are common dielectrics. (See insulator.)
diâ¢eâ¢lecâ¢tric. 1. a nonconductor of electricity; insulator. 2. a substance in which an electric field can be maintained with a minimum loss of power. 3. of or pertaining to a dielectric substance. [1830â40; di- 3 + electric ]. di`eâ¢lecâ²triâ¢calâ¢ly, adv.