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  2. Orpiment - Wikipedia

    en.wikipedia.org/wiki/Orpiment

    Orpiment, also known as ″yellow arsenic blende″ is a deep-colored, orange-yellow arsenic sulfide mineral with formula As 2 S 3.It is found in volcanic fumaroles, low-temperature hydrothermal veins, and hot springs and may be formed through sublimation.

  3. Arsenic - Wikipedia

    en.wikipedia.org/wiki/Arsenic

    Grey arsenic is also the most stable form. Yellow arsenic is soft and waxy, and somewhat similar to tetraphosphorus (P 4). [25] Both have four atoms arranged in a tetrahedral structure in which each atom is bound to each of the other three atoms by a single bond. This unstable allotrope, being molecular, is the most volatile, least dense, and ...

  4. Arsenic trisulfide - Wikipedia

    en.wikipedia.org/wiki/Arsenic_trisulfide

    Arsenic trisulfide is the inorganic compound with the formula As 2 S 3. It is a dark yellow solid that is insoluble in water. It is a dark yellow solid that is insoluble in water. It also occurs as the mineral orpiment (Latin: auripigmentum), which has been used as a pigment called King's yellow.

  5. Allotropes of arsenic - Wikipedia

    en.wikipedia.org/wiki/Allotropes_of_arsenic

    Bottom left: Black arsenic, orthorhombic structure. Right: Yellow arsenic, tetrahedral configuration. [1] Arsenic in the solid state can be found as gray, black, or yellow allotropes. These various forms feature diverse structural motifs, with yellow arsenic enabling the widest range of reactivity.

  6. List of inorganic pigments - Wikipedia

    en.wikipedia.org/wiki/List_of_inorganic_pigments

    Arsenic pigments. Orpiment: natural monoclinic arsenic sulfide (As 2 S 3). Bismuth pigments. Primrose yellow (PY184): bismuth vanadate (BiVO 4). Cadmium pigments. Cadmium yellow (PY37): cadmium sulfide (CdS), which also occurs as the mineral greenockite. Chromium pigments. Chrome yellow or crocoite (PY34): lead chromate (PbCrO 4). Strontium ...

  7. Arsenic blende - Wikipedia

    en.wikipedia.org/wiki/Arsenic_blende

    Arsenic blende, [1]: 239 realgar, also red arsenic blende [7]: 48 or sandarac — arsenic sulfide, ore mineral with the composition AsS. It also has a bright color ranging from fiery red to orange-yellow. In addition, another widely known ore mineral, which in its chemical composition belongs to a different group, has a similar trivial name:

  8. Arsenic compounds - Wikipedia

    en.wikipedia.org/wiki/Arsenic_compounds

    Arsenic trioxide powder.. Compounds of arsenic resemble in some respects those of phosphorus which occupies the same group (column) of the periodic table.The most common oxidation states for arsenic are: −3 in the arsenides, which are alloy-like intermetallic compounds, +3 in the arsenites, and +5 in the arsenates and most organoarsenic compounds.

  9. Realgar - Wikipedia

    en.wikipedia.org/wiki/Realgar

    Realgar (/ r i ˈ æ l ɡ ɑːr,-ɡ ər / ree-AL-gar, -⁠gər), also known as arsenic blende, ruby sulphur or ruby of arsenic, is an arsenic sulfide mineral with the chemical formula α-As 4 S 4. It is a soft, sectile mineral occurring in monoclinic crystals, or in granular, compact, or powdery form, often in association with the related ...