Bismuth oxychloride

Bismuth oxychloride
Names
	Other names bismuthyl chloride; bismuth oxochloride; bismuth oxide chloride; bismuth(III) oxide chloride; bismoclite
Identifiers
CAS Number	7787-59-9 ;
3D model (JSmol)	Interactive image;
ChemSpider	10606415 ;
ECHA InfoCard	100.029.202
EC Number	232-122-7;
PubChem CID	6328152;
UNII	4ZR792I587 ;
CompTox Dashboard (EPA)	DTXSID2020181 ;
	InChI InChI=1S/Bi.ClH.O/h;1H;/q+1;;/p-1 Key: GLQBXSIPUULYOG-UHFFFAOYSA-M ; InChI=1/Bi.ClH.O/h;1H;/q+1;;/p-1/rBiClO/c2-1-3 Key: GLQBXSIPUULYOG-JKOFJLRAAJ;
	SMILES Cl[Bi]=O;
Properties
Chemical formula	BiOCl
Molar mass	260.43 g·mol−1
Appearance	Lustrous white crystals with a pearly iridescent light reflectivity
Density	7.36 g/cm3 (measured); 7.78 g/cm3 (calculated);
Solubility in water	negligible
Solubility	soluble in acids
Structure
Crystal structure	Tetragonal, tP6
Space group	P4/nmm, No. 129
Lattice constant	a = 0.3887 nm, c = 0.7354 nm
Hazards
	GHS labelling:
Pictograms
Signal word	Warning
Hazard statements	H315, H319, H335
Precautionary statements	P261, P264, P271, P280, P302+P352, P304+P340, P305+P351+P338, P312, P321, P332+P313, P337+P313, P362, P403+P233, P405, P501
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). verify (what is ?) Infobox references

Bismuth oxychloride is an inorganic compound of bismuth with the formula BiOCl. It is a lustrous white solid used since antiquity, notably in ancient Egypt. Light wave interference from its plate-like structure gives a pearly iridescent light reflectivity similar to nacre. Previously, until the last decade of the twentieth century, bismuth oxochloride was known as bismuthyl chloride. It is also known as pigment pearl white.

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