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Sulfur
Physical - chemical
properties
 Chemical symbol S, (Sulphur)
 Atomic number : 16
 Ar: 32,065
 Density 1,960 g/cm3
 Melting point: 115, °C - 388,4 K
 Boiling point: 444,67 °C - 717,87 K
Structure
History
Sulfur was known in ancient times, and is
referred to in the Bible.
Early alchemists gave sulfur its own
alchemical symbol which was a triangle
at the top of a cross.
In 1867 sulfur was discovered in
underground deposits in Louisiana and
Texas.
Biological role
Sulfur is found in:
 amino acids -cysteine
 methionine
 polypeptides
 proteins
enzymes
 cells
 DNA
 bacteria
Applications
Sulfur is used in:
 batteries
 detergents
 vulcanization of rubber
 fungicides
 manufacture of
phosphate fertilizers
 bleaching paper
 preservative in wine and
dried fruit
 gunpowder
 fireworks
 photographic fixing
agents
 laxative
 exfoliant
Environmental Impact
Industry
Sulfur dioxide SO2
Acid rain
Damage to the natural environment and
chemical weathering
Occurrence
 in earth’s crust (0,03 - 0,09 %)
 in oceans and seas (csulfur = 900 mg/l)
 in the universe (1 atom of sulfur come to 60 000 atoms
of hydrogen)
 in volcanic regions and hot springs
 In ores: pyrite (iron sulfide), cinnabar (mercury sulfide),
galena (lead sulfide), sphalerite (zinc sulfide) and
stibnite (antimony sulfide), gypsum (calcium sulfate),
barite (barium sulfate)
spring – pramen, vřídlo
Sulfur in other languages
english: sulfur
latin: sulphur
czech: síra
croatian: sumpor
french: soufre
german: dchwefel
italian: solfo
norwegian: svovel
portuguese: enxôfre
spanish: azufre
swedish: svavel
References:
http://en.wikiedia.org./wiki/Sulfur
http://www.doktorka.cz/run/reydsys/vitaminy/rart.asp?id=1698
http://www.webelements.com/webelements/ele
ments/text/S/key.html
http://chemlab.pc.maricopa.edu/periodic/S.html
http://environmentalchemistry.com/yogi/periodi
c/S.html
http://www.scescape.net/~woods/elements/sulf
ur.html
Thank you for your
attention!
Presentation was prepared by:
Eva Jochimová
Helena Šmídová
3.11.2005 Brno University of Technology