Stains

Field's stain is a histological method for staining of blood smears. It is used for staining thin blood films in order to discover malarial parasites. Field's stain is a version of a Romanowsky stain, used for rapid processing of the specimens.

In chemistry, triiodide (sometimes written tri-iodide) can have several meanings. Triiodide primarily refers to the triiodide ion, i3−, a polyatomic anion composed of three iodine atoms. For some chemical compounds, triiodide indicates a salt of the named cation with the triiodide anion. Examples include sodium triiodide, thallium triiodide, and ammonium triiodide, [nh4][i3]. Each of these compounds has a (mono)iodide counterpart. For other chemical compounds, triiodide indicates that each molecule contains three iodine atoms that are not bonded to each other, not forming the triiodide ion.

Phosphorus triiodide (pi3) is an unstable red solid which reacts violently with water. It is a common misconception[1] that pi3 is too unstable to be stored; it is, in fact, commercially available. It is widely used in organic chemistry for converting alcohols to alkyl iodides.

Nitrogen triiodide, also called nitrogen iodide or, more correctly, triiodine nitride to distinguish it from the triiodide ion, is the chemical compound with the formula NI3. It is an extremely sensitive contact explosive: small quantities explode with a gunpowder-like snap when touched even lightly, releasing a purple cloud of iodine vapor.

Boron triiodide is a chemical compound of boron and iodine with chemical formula bi3. It has a trigonal planar molecular geometry. It is a crystalline solid. Its dielectric constant is 5. 38 and its heat of vaporization is 40. 5 kj/mol.

In chemistry, triiodide (sometimes written tri-iodide) can have several meanings. Triiodide primarily refers to the triiodide ion, I3−, a polyatomic anion composed of three iodine atoms. For some chemical compounds, triiodide indicates a salt of the named cation with the triiodide anion. Examples include sodium triiodide, thallium triiodide, and ammonium triiodide, [NH4][I3].

Antimony triiodide is the chemical compound with the formula sbi3. This ruby-red solid is the only characterized "binary" iodide of antimony, i. E. The sole compound isolated with the formula sbxiy. Like many iodides of the heavier main group elements, its structure depends on the phase. Gaseous sbi3 is a molecular, pyramidal species as anticipated by vsepr theory.

Ammonium triiodide (nh4i3) is the salt of the ammonium cation with the triiodide anion. Sometimes the name ammonium triiodide is mistakenly used to refer to a different compound, nitrogen triiodide (ni3).