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| − | == Description ==
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| − | An orange-yellow arsenic sulfide mineral that can occur as a light induced alteration product of realgar. Pararealgar has been found in association with realgar in occasional classical and European paintings.
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| − | == Synonyms and Related Terms ==
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| − | arsenic sulfide
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| − | == Other Properties ==
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| − | Monoclinic, yellow, prismatic crystals. Fracture=brittle and uneven Luster=vitreous to resinous. Pigment particles are irregular with high relief.
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| − | {| class="wikitable"
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| − | |-
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| − | ! scope="row"| Composition
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| − | | AsS
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| − | |-
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| − | ! scope="row"| Mohs Hardness
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| − | | 1.0-1.5
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| − | |-
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| − | ! scope="row"| Density
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| − | | 3.52
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| − | |-
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| − | ! scope="row"| Molecular Weight
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| − | | 106.99
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| − | |-
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| − | ! scope="row"| Refractive Index
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| − | | >2.02
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| − | |}
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| − | == Hazards and Safety ==
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| − | Highly toxic by ingestion and inhalation. Carcinogen and mutagen
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| − | == Additional Information ==
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| − | ° K. Trentelman, L. Stodulski, M. Pavlosky, 'Characterization of pararealgar and other light-induced transformation products from realgar by Raman microspectroscopy' ''Analytical Chemistry'' 68 (1996) 1755-1761.° Webmineral: [http://webmineral.com/data/pararealgar.shtml Pararealgar]
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| − | == Sources Checked for Data in Record ==
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| − | * Nicholas Eastaugh, Valentine Walsh, Tracey Chaplin, Ruth Siddall, ''Pigment Compendium'', Elsevier Butterworth-Heinemann, Oxford, 2004
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| − | [[Category:Materials database]]
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Latest revision as of 09:51, 24 April 2022
