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| | realgar Basic information |
| Product Name: | realgar | | Synonyms: | realgar | | CAS: | | | MF: | As2S2 | | MW: | 0 | | EINECS: | | | Product Categories: | | | Mol File: | Mol File | ![realgar Structure]() |
| | realgar Chemical Properties |
| | realgar Usage And Synthesis |
| Chemical Properties | Monoclinic crystal system, single crystals are fine columnar and needle-like. Orange-red color, the stripes are light orange-red. Adamantine luster, fracture is resin luster. Insoluble in water and hydrochloric acid, soluble in nitric acid. | | Physical properties | Habit: prismatic, massive, granular, druse, earthy.
Color: aurora red, orange yellow, or
dark red.
Diaphaneity: translucent to opaque.
Luster: resinous, glassy, adamantine.
Streak: orange red.
Cleavage: [010], [001], and [100].
Twinning: (100).
Fracture: brittle,
sectile.
Chemical: dissolved by HNO3, evolved a garlic odor when calcinated and
gives sublimated As2O3 deposit on cold wall.
Electrical resistivity 1 to 150 mΩ.m.
Occurrence: hydrothermal with orpiment. Marcasite, and stibine. Sedimentary rocks. | | Definition | The mineral form of
arsenic(II) sulfide, As4S4. It is bright red in
color and used as a pigment, in tanning,
and in pyrotechnics. | | Definition | realgar: A red mineral form of arsenic(II) sulphide, As2S2. |
| | realgar Preparation Products And Raw materials |
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