Strontiumhydroxid

Bezeichnung:Strontiumhydroxid

CAS-Nr18480-07-4

Englisch Name:Strontium hydroxide

CBNumberCB9226504

SummenformelH2O2Sr

Molgewicht121.63

MOL-Datei18480-07-4.mol

Synonyma

Strontiumhydroxid

Strontiumhydroxid physikalisch-chemischer Eigenschaften

Schmelzpunkt	535°C
Dichte	3.625
Dampfdruck	0Pa at 20℃
Aggregatzustand	colorless orthorhombic crystals
Farbe	colorless orthorhombic crystals, crystalline; hygroscopic
PH	11.27(1 mM solution);12.22(10 mM solution);13.09(100 mM solution)
Wasserlöslichkeit	g/100g solution in H2O: 0.90 (0°C), 2.16 ± 0.41 (25°C), 47.71 (100°C); solid phase, Sr(OH)2 · 8H2O [KRU93]
Merck	13,8924
Stabilität	Stable.
CAS Datenbank	18480-07-4(CAS DataBase Reference)
NIST chemische Informationen	Strontium hydroxide(18480-07-4)
EPA chemische Informationen	Strontium hydroxide (Sr(OH)2) (18480-07-4)

Sicherheit

Kennzeichnung gefährlicher	C
R-Sätze:	34
S-Sätze:	26-27-36/37/39-45
RIDADR	UN 3262 8/PG 2
WGK Germany	3
RTECS-Nr.	WK9100000
HazardClass	8
PackingGroup	III
HS Code	28164000

Gefahreninformationscode (GHS)

Strontium hydroxide Chemische Eigenschaften,Einsatz,Produktion Methoden

R-Sätze Betriebsanweisung:
R34:Verursacht Verätzungen.
S-Sätze Betriebsanweisung:
S26:Bei Berührung mit den Augen sofort gründlich mit Wasser abspülen und Arzt konsultieren.
S27:Beschmutzte, getränkte Kleidung sofort ausziehen.
S36/37/39:Bei der Arbeit geeignete Schutzkleidung,Schutzhandschuhe und Schutzbrille/Gesichtsschutz tragen.
S45:Bei Unfall oder Unwohlsein sofort Arzt zuziehen (wenn möglich, dieses Etikett vorzeigen).
Beschreibung
Strontium Hydroxide occurs as an anhydrate whose prismatic, colorless crystals are deliquescent. A monohydrate and octahydrate are also known.Strontium hydroxide is slightly soluble in water but, surprisingly, the octahydrate is much more soluble. It is the latter that is supplied commercially for most applications.When the octahydrate is heated, seven waters of hydration are lost to form the monohydrate and finally the oxide.
Chemische Eigenschaften
colourless deliquescent crystals
Physikalische Eigenschaften
White deliquescent crystal; density 3.625 g/cm³; melts at 375°C in hydrogen atmosphere; converts to oxide at 710°C; slightly soluble in water at 0°C, 0.41 g/100 mL, soluble in boiling water at 100°C, 21.83 g/100 mL; soluble in acids and ammonium chloride solution.
The octahydrate consists of colorless, tetragonal, deliquescent crystals; density 1.90 g/cm³; loses all its water molecules at 100°C; sparingly soluble in water at low temperatures, 0.90 g/100 mL at 0°C; soluble in boiling water, 47.7 g/100 mL at 100°C; aqueous solution highly alkaline; soluble in acids and in ammonium chloride solution; insoluble in acetone.
Verwenden
Extraction of sugar from beet sugar molasses, lubricant soaps and greases, stabilizer for plastics, glass, adhesives.
Verwenden
Strontium hydroxide is used chiefly in the refining of beet sugar and as a stabilizer in plastic. It may be used as a source of strontium ions when the Cl^- ion is undesirable. Strontium hydroxide absorbs carbon dioxide from the air to form strontium carbonate. This salt is available commercially in sizable quantities.
Verwenden
Strontium hydroxide [Sr(OH)2] is used to extract sugar from sugar beet molasses. It is also used in the manufacture of soaps, adhesives, plastics, glass, and lubricants that can be used in very high or low temperature environments.
Definition
ChEBI: Strontium dihydroxide is a strontium hydroxide.
synthetische
Preparation Strontium hydroxide is prepared by treating strontium oxide with water: SrO + H₂O → Sr(OH)₂
Alternatively, Sr(OH)2 is made by heating strontium carbonate or strontium sulfide with steam at temperatures around 500 to 600°C: SrCO₃ + H₂O → Sr(OH)₂ + CO₂ SrS + 2H₂O → Sr(OH)₂ + H₂S.
Flammability and Explosibility
Not classified
läuterung methode
Crystallise the hydroxide from hot water (2.2mL/g) by cooling to 0o.

Strontium hydroxide Upstream-Materialien And Downstream Produkte

Strontiumhydroxid Anbieter Lieferant Produzent Hersteller Vertrieb Händler.

18480-07-4, Strontium hydroxide Verwandte Suche:

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