… is an arsenic disulphide, bright red in colour, used in pyrotechnics. (ii) Orpiment, which is an arsenic … bright yellow, used in paint‑making. Mispickel (arsenical pyrites or iron thioarsenide) is also included in this …
… R and R 1 stand for alkyl or aryl radicals (methyl, ethyl, propyl, phenyl, etc.). Ketones may have two tautomeric … of the dry distillation of wood (methyl alcohol and crude pyroligneous acid), but is mainly obtained by synthesis. …
… is used for the manufacture of match compounds, in pyrotechnics, or as a catalyst (e.g., in the chlorination of … of arsenic) is a solid extracted from natural arsenical pyrites. It exists in two main forms : (a) Common, …
… bactericidal or germicidal properties. (2) Poly(vinyl pyrrolidone)-iodine, being a reaction product of iodine and poly(vinyl pyrrolidone). (3) Bone graft substitutes, such as those …
… imprint is then measured with a microscope. (2) The diamond pyramid indentation test . This test may be made by the … . A small hammer (usually tipped with a diamond pyramid) is released from a pre‑determined height on to the …
