Aluminum sulfide, additionally called dialuminium trisulfide, is one ionic compound of aluminum and sulfur stood for by the chemical formula Al2S3 <1, 2>. It exist in different crystalline forms and hydrolyzes to aluminum hydroxide/oxide <3, 4>.
Aluminum Sulfide Identification | |
| CAS Number | 1302-81-4 <1, 2> |
| PubChem CID | 16684788 <6> |
| ChemSpider ID | 140154 <1> |
| EC Number | 215-109-0 <1, 2> |
| InChI Key | ZPXDOGRYMSWBBM-UHFFFAOYSA-N <6> |
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Aluminum Sulfide Formula
How is Aluminum Sulfide Prepared
Its synthesis through straight heating that aluminum and also sulfur deserve to be stood for by the complying with equation <7>:
2Al + 3S → Al2S3
However, the reaction is very exothermic, and also it is not preferable to warm the whole mixture <7>. Also, sulfur is a volatile reactant the melts away before the reaction takes ar <7>. Therefore, lead sulfide is regularly used because that the ready of Al2S3 <7>:
2Al + 3PbS → Al2S3 + 3Pb
Aluminum Sulfide
Reactions with other Compounds
Aluminum Sulfide and Water
When aluminum sulfide is exposed to moisture in the atmosphere, it experience hydrolysis reaction to form aluminum hydroxide and also hydrogen sulfide <5>.
Al2S3 + 6H2O → 2Al(OH)3 + 3H2S
Aluminum Sulfide and also Hydrochloric Acid
Aluminum sulfide top top reacting through hydrochloric acid develops hydrogen sulfide and also aluminum chloride, as shown listed below <8>:
Al2S3 + 6HCl → 2AlCl3 + 3H2S
Aluminum Sulfide Lewis Structure
Properties and Characteristics of Aluminum Sulfide
General Properties | |
| Molar Mass/Molecular Weight | 150.158 g/mol <1> |
Physical Properties | |
| Color and Appearance | Gray flour or granules <2> |
| Melting Point | 1,100 °C, 2,012 °F <2> |
| Boiling Point | 1,500 °C, 2,732 °F <2> |
| Density | 2.32 g cm-3 <2> |
| State of issue at room temperature (solid/liquid/gas) | Solid <2> |
| Solubility | Insoluble in (CH3)2CO (acetone) <9> |
| Solubility in Water | Reacts and also decomposes in H2O <9> |
| Heat volume (C) | 105.1 J/mol K |
| Standard Molar Enthalpy | -724 kJ/mol <9> |
| Standard Molar Entropy | 116.9 J/mol K |
Atomic Properties | |
| Crystal Structure | Trigonal, tetragonal, hexagonal <3, 4> |
Aluminum Sulfide decision Structure
What is It provided for
Producing organic compounds choose ethanethiol and also chemicals forced for tanning and making document <10>Preparing hydrogen sulfide that has actually several commercial uses <11>Is Aluminum Sulfide Toxic
Exposure come aluminum sulfide can cause skin and severe eye wake up <12>. Inhalation of dust, vapor, or fumes have the right to cause challenge in breathing <12>.
References:
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Limiting Reagent (Reactant)
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