| Identification | More | [Name]
Strontium hydroxide | [CAS]
18480-07-4 | [Synonyms]
STRONTIUM HYDROXIDE
STRONTIUM (II) HYDROXIDE
Sr(OH)2
Strontium hydroxide (Sr(OH)2)
strontiumdihydroxide
strontiumhydroxide(sr(oh)2)
strontiumhydroxide,anhydrous
STRONTIUM HYDROXIDE, 99.998%
Stronitium hydroxide
Strontium dihydoxide | [EINECS(EC#)]
242-367-1 | [Molecular Formula]
H2O2Sr | [MDL Number]
MFCD00036273 | [Molecular Weight]
121.63 | [MOL File]
18480-07-4.mol |
| Chemical Properties | Back Directory | [Appearance]
colourless deliquescent crystals | [Melting point ]
535°C | [density ]
3.625 | [vapor pressure ]
0Pa at 20℃ | [form ]
colorless orthorhombic crystals | [color ]
colorless orthorhombic crystals, crystalline; hygroscopic | [PH]
11.27(1 mM solution);12.22(10 mM solution);13.09(100 mM solution) | [Stability:]
Stable. | [Water Solubility ]
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 | [Uses]
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. | [CAS DataBase Reference]
18480-07-4(CAS DataBase Reference) | [NIST Chemistry Reference]
Strontium hydroxide(18480-07-4) | [EPA Substance Registry System]
18480-07-4(EPA Substance) |
| Hazard Information | Back Directory | [Chemical Properties]
colourless deliquescent crystals | [Description]
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. | [Physical properties]
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. | [Definition]
ChEBI: Strontium dihydroxide is a strontium hydroxide. | [Preparation]
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. | [Purification Methods]
Crystallise the hydroxide from hot water (2.2mL/g) by cooling to 0o. | [Flammability and Explosibility]
Notclassified |
| Safety Data | Back Directory | [Hazard Codes ]
C | [Risk Statements ]
R34:Causes burns. | [Safety Statements ]
S26:In case of contact with eyes, rinse immediately with plenty of water and seek medical advice .
S27:Take off immediately all contaminated clothing .
S36/37/39:Wear suitable protective clothing, gloves and eye/face protection .
S45:In case of accident or if you feel unwell, seek medical advice immediately (show label where possible) . | [RIDADR ]
UN 3262 8/PG 2
| [WGK Germany ]
3
| [RTECS ]
WK9100000
| [HazardClass ]
8 | [PackingGroup ]
III | [HS Code ]
28164000 |
| Questions And Answer | Back Directory | [Uses]
Strontium hydroxide is used in extracting sugar from beet sugar molasses and in making lubricant soaps and greases.
| [Toxicity]
Dry compound or aqueous solution is corrosive. Contact with skin or eyes can cause irritation.
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