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Strontium hydroxide

Uses Toxicity

Strontium hydroxide

CAS No.18480-07-4
Chemical Name:Strontium hydroxide
CBNumber:CB9226504
Molecular Formula:H2O2Sr
Formula Weight:121.63
MOL File:18480-07-4.mol

Strontium hydroxide Property

Melting point 535°C
Boiling point 710 °C (decomposes)
Density 3.625
vapor pressure 0Pa at 20℃
refractive index 1.650
form colorless orthorhombic crystals
color colorless orthorhombic crystals, crystalline; hygroscopic
Odor Odorless
PH 11.27(1 mM solution);12.22(10 mM solution);13.09(100 mM solution)
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
Stability Stable.
CAS DataBase Reference 18480-07-4(CAS DataBase Reference)
EWG's Food Scores 1-3
FDA UNII EPK818UET5
NIST Chemistry Reference Strontium hydroxide(18480-07-4)
EPA Substance Registry System Strontium hydroxide (Sr(OH)2) (18480-07-4)
UNSPSC Code 12352302
NACRES NA.23

Safety

Hazard Codes :C
Risk Statements :34
Safety Statements :26-27-36/37/39-45
RIDADR :UN 3262 8/PG 2
WGK Germany :3
RTECS :WK9100000
HazardClass :8
PackingGroup :III
HS Code :28164000

NFPA 704:

	0
2		0

Hazard and Precautionary Statements (GHS)

Symbol(GHS)
Signal wordDanger
Hazard statements H314
Precautionary statements P260-P280-P303+P361+P353-P304+P340+P310-P305+P351+P338-P363

Strontium hydroxide Price More Price(1)

Brand: Sigma-Aldrich(India)
Product number: 433608
Product name : Strontium hydroxide
Purity: 94%
Packaging: 25G
Price: ₹3041.83
Updated: 2022/06/14
Buy: Buy

Strontium hydroxide Chemical Properties,Usage,Production

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.
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.
Chemical Properties colourless deliquescent crystals
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.
Uses Extraction of sugar from beet sugar molasses, lubricant soaps and greases, stabilizer for plastics, glass, adhesives.
Uses 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.
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.
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.
Flammability and Explosibility Not classified
Purification Methods Crystallise the hydroxide from hot water (2.2mL/g) by cooling to 0o.