... in good quality.There are two variations of Indium trisulfide: α and β.Density 4.613~4.9g/cm3Melting point:1050 ... dissolve in water or acid;d.volatile.Application Due to Indium trisulfide has above characteristics, In2S3,a kind of excellent catalyst ... other metallic sulfides to form compounds, such as silver indium disulphide, copper indium disulphide, which are important semiconductor materials.