sulfur (S)-Pieces

sulfur (S)-Pieces introduce:

Characteristic

 

Sulfur is a non-metallic element, chemical symbol S, atomic number 16.Usually sulfur is a yellow crystal, also known as sulfur.There are many kinds of allotropes of sulfur, such as rhombic sulfur, monoclinic sulfur and elastic sulfur.Sulfur element in nature is usually in the form of sulfide, sulfate or elemental substance.




Phase at STP:solid

Appearance: light yellow solid, soft, light, smelly powder.

Melting point:388.36 K (115.21 °C, 239.38 °F)

Boiling point:717.8 K (444.6 °C, 832.3 °F)

Density (near r.t.):alpha: 2.07 g/cm3

                    beta: 1.96 g/cm3

                    gamma: 1.92 g/cm3

when liquid (at m.p.):1.819 g/cm3

Critical point:1314 K, 20.7 MPa

Heat of fusion mono: 1.727 kJ/mol

Heat of vaporization mono: 45 kJ/mol

Molar heat capacity:22.75 J/(mol·K)

 


Application

 

Sulfuric acid:Elemental sulfur is used mainly as a precursor to other chemicals.

Other important sulfur chemistry:One of the uses of elemental sulfur is in vulcanization of rubber, where polysulfide chains crosslink organic polymers.When silver-based photography was widespread, sodium and ammonium thiosulfate were widely used as "fixing agents". Sulfur is a component of gunpowder ("black powder").

Fertilizer:Sulfur is increasingly used as a component of fertilizers. 

Fine chemicals:Organosulfur compounds are used in pharmaceuticals, dyestuffs, and agrochemicals. 

Fungicide and pesticide:Elemental sulfur is one of the oldest fungicides and pesticides. 

Bactericide in winemaking and food preservation

Pharmaceuticals:Sulfur (specifically octasulfur, S8) is used in pharmaceutical skin preparations for the treatment of acne and other conditions.

Furniture:Sulfur can be used to create decorative inlays in wooden furniture.