Beryllium sulfate

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 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 Material safety data sheet (MSDS) ICSC 1351 EU index number 004-002-00-2 GHS pictograms 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 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 Material safety data sheet (MSDS) ICSC 1351 EU index number 004-002-00-2 GHS pictograms 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.

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, although further heating leads to decomposition to beryllium oxide and sulfur trioxide. The anhydrous salt is difficult to rehydrate, and is described as "insoluble" in cold water, although it will dissolve in hot water.

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.

External links

• International Chemical Safety Card 1351
• IPCS Environmental Health Criteria 106: Beryllium
• IPCS Concise International Chemical Assessment Document 32: Beryllium and Beryllium Compounds
• IPCS Health and Safety Guide 044: Beryllium
• Beryllium and Beryllium Compounds. In Beryllium, Cadmium, Mercury, and Exposures in the Glass Manufacturing Industry; IARC Monographs on the Evaluation of Carcinogenic Risks to Humans 58; International Agency for Research on Cancer: Lyon, France, 1993; pp 41–117. ISBN 92-832-1258-4, <http://monographs.iarc.fr/ENG/Monographs/vol58/mono58-6.pdf>