Catalog Number
ACMA00021127
Description
Zinc sulfide appears as a yellowish-white powder in a liquid. Insoluble in water and denser than water. Primary hazard is to the environment. Immediate steps should be taken to limit spread to the environment. Easily penetrates the soil to contaminate groundwater and nearby waterways.;DryPowder; OtherSolid; PelletsLargeCrystals;WHITE-TO-YELLOW CRYSTALS OR POWDER.
IUPAC Name
sulfanylidenezinc
Molecular Weight
97.4g/mol
InChI Key
WGPCGCOKHWGKJJ-UHFFFAOYSA-N
Solubility
Insol in alkalies; sol in dil mineral acids;0.00069 g/100 cc water at 18 °C (Alpha); 0.00065 g/100 cc water at 18 °C (Beta);Solubility in water: none
Application
Zinc sulfide, a yellowish-white powder available in two crystalline forms-wurtzite and sphalerite-serves a variety of purposes across different industries. When kept dry, it remains stable, and while it is insoluble in water, it dissolves in acids. Primarily, it is utilized as a pigment in paints, oilcloths, linoleum, leather, and dental rubber, often in combination with zinc oxide as "mineral white." In its anhydrous form, zinc sulfide is employed in x-ray screens and luminous dials of watches, as well as in television screens. Additionally, zinc sulfide finds significant use in the plastics industry, particularly in the form of Sachtolith, due to its lightening and hiding power. It effectively colors various thermoplasts without causing abrasion to production machinery or affecting the polymer adversely, even at high operating temperatures. Its soft texture is beneficial in glass-fiber-reinforced plastics as it prevents mechanical fiber damage during production. Furthermore, Sachtolith acts as a dry lubricant, enhancing the longevity of stamping tools for industrial rubber manufacturing and improving the lightfastness and aging resistance of elastomers. It is also used as a dry lubricant for roller and plain bearings, and acts as a white pigment for greases and oils.
Color/Form
Exists in two crystalline forms, alpha (wurtzite) and beta (sphalerite);White hexagonal crystals /wurtzite/;Gray-white cubic crystals /sphalerite/;White to grayish-white or yellowish powder colorless cubic crystals
Composition
When containing water, it slowly oxidizes in air to sulfate;When heated kto decomposition it emits toxic vapors of zinc and /sulfur oxides/.
Compound Is Canonicalized
Yes
Covalently-Bonded Unit Count
1
Defined Atom Stereocenter Count
0
Defined Bond Stereocenter Count
0
Deprecated CAS
37187-67-0, 209065-88-3, 64334-34-5, 714217-01-3
Hydrogen Bond Acceptor Count
1
Hydrogen Bond Donor Count
0
MeSH Entry Terms
sphalerite;zinc sulfide
Monoisotopic Mass
95.901213g/mol
Other Experimental
Changes to alpha form at 1020 °C; sublimes at 1180 °C /beta/;DEPENDING ON IRON (FE) CONTENT, NATURAL SPECIMENS RANGE IN COLOR FROM LIGHT TAN TO BLACK /ZINC SULFIDE MINERAL/
Refractive Index
Index of refraction: 2.356, 2.378 (alpha); 2.368 (beta)
Stability
When containing water, it slowly oxidizes in air to sulfate;Stable if kept dry
Topological Polar Surface Area
32.1Ų
Undefined Atom Stereocenter Count
0
Undefined Bond Stereocenter Count
0
