Sulfur
Main page |
| Other names/abbreviations: | S |
| Element no: | 16 |
| Element group: | 16 (IUPAC) VI A (American labelling) VI B (European labelling) Chalcogens |
| Element type: | Nonmetals |
| CAS-Number: | 7704-34-9 |
| EINECS-Number: | 231-722-6 |
Quantitative analysis
Method - Inductively Coupled Plasma Method [1]. A portion of the sample is digested in a combination of acids. The digest is aspirated into an 8,000 K argon plasma where resulting light emission is quantified for 30 elements simultaneously.Method limit of detection in water = 0.002 mg/L
Method limit of detection in soil = 1.00 mg/kg
Safety
Symbol: -R-phrases: -
S-phrases: -
Physical properties
Appearance | ||
| Physical state @ 20°C: | Solid [4] | |
| Color: | Light Yellow [4] | |
| Odor: | Weak characteristic odour [4] | |
Bulk properties | ||
| Molecular weight (g/mol): | 32.06 [4] | |
| Melting point (°C): | 115.21 [3] | |
| Boiling point (°C): | 444.60 [3] | |
| Ignition temperature (°C): | 235 [4] | |
| Flash point (°C): | 168 - 207 [4] | |
| Thermal decomposition (°C): | > 250 [4] | |
| Density (g/cm3): | 1.80 - 2.06 (20 °C) [4] | |
Optical properties | ||
| Refractive index: | 1.957 (alpha form) [3] | |
Thermodynamic properties | ||
| ΔfH°gas (kJ/mol): | 277.2 (monoclinic) [3] 128.6 (S2) [3] | |
| ΔfH°solid (kJ/mol): | 0.0 (rhombic) [3] 0.3 (monoclinic) [3] | |
| ΔH°fusion (kJ/mol): | 1.72 [3] | |
| S°gas (J/K·mol): | 167.8 (monoclinic) [3] 228.2 (S2) [3] | |
| S°solid (J/K·mol): | 32.1 (rhombic) [3] | |
| ΔfG°gas (kJ/mol): | 236.7 (monoclinic) [3] 79.7 (S2) [3] | |
| Cp (gas) (J/K·mol): | 23.7 (monoclinic, 25 °C) [3] 32.5 (S2, 25 °C) [3] | |
| Cp (solid) (J/K·mol): | 22.75 (rhombic, 25 °C) [3] | |
| Critical temperature (°C): | 1041 [3] | |
Electronic properties | ||
 |
Electron configuration: | 1s2-2s2-2p6-3s2-3p4 |
References
1: Standard Methods for the Analysis of Water and Wastewater, APHA, 1992, 18th edition2: Greenwood,N.N., Earnshaw,A. Chemistry of the elements
2nd edition (1997) Edited by Greenwood,N.N., Earnshaw,A. pp. 1-1340, Butterworth-Heinemann. Oxford. Great Britain
3: CRC Handbook of Chemistry and Physics
75th edition (1994) Edited by Lide,D.R. , CRC Press Inc. Boca Raton, USA
4: Merck. ChemDAT The Merck Chemical Database Ver. 1.1.5
© Michael Pilgaard
Created: October 6, 2008
Last update: October 9, 2008