213292

Sulfur

99.998% trace metals basis

• Synonym(s): sulfur powder
• Empirical Formula (Hill Notation): S
• CAS Number: 7704-34-9
• Molecular Weight: 32.07
• EC Number: 231-722-6
• MDL number: MFCD00085316
• UNSPSC Code: 12141912
• PubChem Substance ID: 24852677
• NACRES: NA.23

Properties

• vapor density: 8.9 (vs air)
• vapor pressure: 1 mmHg ( 183.8 °C); 10 mmHg ( 246 °C)
• Assay: 99.998% trace metals basis
• form: powder or flakes
• autoignition temp.: 450 °F
• resistivity: 2E23 μΩ-cm, 20°C
• bp: 444.7 °C (lit.)
• mp: 112.8 °C (rhombic) (lit.); 117-120 °C (lit.); 119.0 °C (monoclinic) (lit.)
• density: 2.07 g/mL at 25 °C
• SMILES string: [S]
• InChI: 1S/S
• InChI key: NINIDFKCEFEMDL-UHFFFAOYSA-N

Description

General description

Elemental sulfur exists in thirty different solid allotropes of which orthorhombic sulfur is the only thermodynamically stable form under normal temperature and pressure. It dissolves in a number of organic solvents and forms a large number of oxyacids. Sulfur is generally highly reactive; the S8 ring of elemental sulfur is easily broken by a number of nucleophilic reactants. The hydroxyl ions react with S at about 100^oC.

Application

It finds applications in Li-S polymer batteries and as semiconductor-sensitizer layer CdS/CdSe/ZnS for solar cells.

Safety Information

• Pictograms: GHS07
• Signal Word: Warning
• Hazard Statements: H315
• Precautionary Statements: P264 - P280 - P302 + P352 - P332 + P313 - P362 + P364
• Hazard Classifications: Skin Irrit. 2
• Storage Class Code: 4.1B - Flammable solid hazardous materials
• WGK: WGK 1
• Flash Point(F): Not applicable
• Flash Point(C): Not applicable
• Personal Protective Equipment: dust mask type N95 (US), Eyeshields, Gloves