Beryllium sulfate

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Beryllium sulfate (anhydrous)
Identifiers
InChI InChI=1/Be.H2O4S/c;1-5(2,3)4/h;(H2,1,2,3,4)/q+2;/p-2
InChIKey KQHXBDOEECKORE-NUQVWONBAA
Standard InChI InChI=1S/Be.H2O4S/c;1-5(2,3)4/h;(H2,1,2,3,4)/q+2;/p-2
Standard InChIKey KQHXBDOEECKORE-UHFFFAOYSA-L
CAS number [13510-49-1]
EC number 236-842-2
RTECS DS4800000
ChemSpider 24291
PubChem 26077
Properties[1]
Chemical formula BeSO4
Molar mass 105.075 g/mol
Appearance white solid
Density 2.50 g/cm3
Melting point

550–600 °C decomp.

Solubility in water see text
Solubility insoluble in alcohol
Hazards[2][3]
Material safety data sheet (MSDS) ICSC 1351
EU index number 004-002-00-2
GHS pictograms Acte Tox. 2, Acute Tox. 3Carc. 1B, STOT RE 1, STOT SE 3, Skin Sens. 1, Eye Irrit. 2, Skin Irrit. 2Aquatic Chronic 2
GHS signal word DANGER
GHS hazard statements H350, H330, H301, H372, H319, H335, H315, H317, H411
Flash point non-flammable
PEL (U.S.) 0.002 mg m−3 TWA (as Be)
0.005 mg m−3 30 min. (as Be)
0.025 mg m−3 peak (as Be)
Related compounds
Other cations Magnesium sulfate
Calcium sulfate
Strontium sulfate
Barium sulfate
Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa)
Beryllium sulfate tetrahydrate
Identifiers
InChI InChI=1/Be.H2O4S.4H2O/c;1-5(2,3)4;;;;/h;(H2,1,2,3,4);4*1H2/q+2;;;​;;/p-2
InChIKey DIMYTQPLZWDZFE-NUQVWONBAJ
Standard InChI InChI=1S/Be.H2O4S.4H2O/c;1-5(2,3)4;;;;/h;(H2,1,2,3,4);4*1H2/q+2;;​;;;/p-2
Standard InChIKey DIMYTQPLZWDZFE-UHFFFAOYSA-L
CAS number [7787-56-6]
EC number 236-842-2
RTECS DS4800000
ChemSpider 56423
PubChem 26077
Properties[1]
Chemical formula BeSO4·4H2O
Molar mass 177.14 g/mol
Appearance white solid
Density 1.71 g/cm3
Melting point

110 °C (−2H2O)
400 °C (dihydrate, dehydr.)

Solubility in water 42.5 g/100 mL (25 °C)
Solubility insoluble in alcohol
Refractive index (nD) 1.4374
Hazards[2][3]
Material safety data sheet (MSDS) ICSC 1351
EU index number 004-002-00-2
GHS pictograms Acte Tox. 2, Acute Tox. 3Carc. 1B, STOT RE 1, STOT SE 3, Skin Sens. 1, Eye Irrit. 2, Skin Irrit. 2Aquatic Chronic 2
GHS signal word DANGER
GHS hazard statements H350, H330, H301, H372, H319, H335, H315, H317, H411
Flash point non-flammable
PEL (U.S.) 0.002 mg m−3 TWA (as Be)
0.005 mg m−3 30 min. (as Be)
0.025 mg m−3 peak (as Be)
Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa)

Beryllium sulfate (BeSO4) is a white crystalline solid. It was first isolated in 1815 by Jöns Jakob Berzelius.[4]

Beryllium sulfate may be prepared by treating an aqueous solution of any beryllium salt with sulfuric acid, followed by evaporation of the solution and crystallization. The hydrated product may be converted to anhydrous salt by heating at 400 °C,[1] although further heating leads to decomposition to beryllium oxide and sulfur trioxide.[4] The anhydrous salt is difficult to rehydrate, and is described as "insoluble" in cold water, although it will dissolve in hot water.[1]

A mixture of beryllium sulfate and radium sulfate was the neutron source that led to the discovery of both the neutron and of nuclear fission.[5]

References

  1. 1.0 1.1 1.2 1.3 CRC Handbook of Chemistry and Physics, 62nd ed.; Weast, Robert C., Ed.; CRC Press: Boca Raton, FL, 1981; p B-82. ISBN 0-8493-0462-8.
  2. 2.0 2.1 Index no. 004-002-00-2 of Annex VI, Part 3, to Regulation (EC) No 1272/2008 of the European Parliament and of the Council of 16 December 2008 on classification, labelling and packaging of substances and mixtures, amending and repealing Directives 67/548/EEC and 1999/45/EC, and amending Regulation (EC) No 1907/2006. OJEU L353, 31.12.2008, pp 1–1355 at p 341.
  3. 3.0 3.1 Beryllium and beryllium compounds. In Pocket Guide to Chemical Hazards; U.S. Department of Health and Human Services (NIOSH) Publication No. 2005-149; Government Printing Office: Washington, DC, 2005. ISBN 9780160727511, <http://www.cdc.gov/niosh/npg/npgd0054.html>.
  4. 4.0 4.1 Lathrop Parsons, Charles The Chemistry and Literature of Beryllium; London, 1909; pp 29–33, <http://books.google.es/books?id=iI8vpmK7jgoC>.
  5. Greenwood, Norman N.; Earnshaw, A. Chemistry of the Elements; Pergamon: Oxford, 1984; p 120. ISBN 0-08-022057-6.

External links

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