Strontium hydroxide
Basic information
- CAS
18480-07-4- Standard SMILES
[OH-].[OH-].[Sr+2]- InChIKey
UUCCCPNEFXQJEL-UHFFFAOYSA-L- Molecular formula
- H2O2Sr
- Average molar mass
- 121.63 g/mol
- Monoisotopic mass
- 121.91109156
Overview
Strontium dihydroxide is a strontium hydroxide.
Names & identifiers
- Preferred name
- Strontium hydroxide
- IUPAC
- strontium dihydroxide
- English name
- Strontium hydroxide
- Molecular formula
- H2O2Sr
- Molecular weight
- 121.63
Names & synonyms
Strontium hydroxide18480-07-4Strontium dihydroxideStrontium hydroxide (Sr(OH)2)EPK818UET5Strontium hydroxide (Sr(OH)2), octahydrateCHEBI:35105STRONTIUM HYDROXIDE ANHYDROUSRefChem:932299DTXCID6079384CHEBI:35153242-367-1
Show more names
Sr(OH)2Strontium dihydoxideStronitium hydroxidestrontiumdihydroxideStrontiuM hydroxide 94%StrontiuM hydroxide,97%STRONTIUM (II) HYDROXIDEStrontiuM hydroxide,95.00%
DTXSID40156893Strontium dihydroxide octahydrateT2B33T08R4strontium;dihydroxideSTRONTIUMHYDROXIDEstrontium(II) hydroxideH2O2SrEINECS 242-367-1
Database identifiers
- CAS
18480-07-4- PubChem CID
- 87672
- ChEBI
CHEBI:35105- UNII
- EPK818UET5
- EC Number
- 242-367-1
- Nikkaji
- J44.005A
Properties
Computed structural properties
- Topological polar surface area
- 2 Ų
- Hydrogen bond donors
- 2
- Hydrogen bond acceptors
- 2
- Rotatable bonds
- 0
- Heavy atoms
- 3
- Formal charge
- 0
- Complexity
- 0
Experimental & physicochemical properties
Chemical ClassesMetals -> Metals, Inorganic Compounds
CosmeticsBuffering
Physical DescriptionOctahydrate: Colorless or white deliquescent solid; [Merck Index] White powder; [Sigma-Aldrich MSDS]
Physicochemical properties
- Melting point
- 535 °C · 535°C
- Boiling point
- 710 °C · 710 °C (decomposes)
- Density
- 3.625 · 3.625
- vapor pressure
- 0 Pa · 0Pa at 20℃
- refractive index
- 1.65 · 1.650
- form
- colorless orthorhombic crystals
- color
- colorless orthorhombic crystals, crystalline; hygroscopic
- PH
- 11.27 · 11.27(1 mM solution);12.22(10 mM solution);13.09(100 mM solution)
- Odor
- Odorless
- Water Solubility
- 100 g · 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]
Safety & regulation
Safety information is for reference only and does not replace the supplier’s Safety Data Sheet (SDS), applicable regulations, or professional assessment.
GHS classification
GHS Classification
Danger
H302 (38.8%): Harmful if swallowed [Warning Acute toxicity, oral]
P260, P264, P264+P265, P270, P280, P301+P317, P301+P330+P331, P302+P361+P354, P304+P340, P305+P354+P338, P316, P317, P321, P330, P363, P405, and P501 (click each P-code to see the statement)
Aggregated GHS information provided per 232 reports by companies from 6 notifications to the ECHA C&L Inventory. Each notification may be associated with multiple companies.
Hazard information
Regulatory Information
Chemical: Strontium hydroxide (Sr(OH)2)
Strontium hydroxide (Sr(OH)2) is listed on the EPA's Chemical Data Reporting (CDR) system. Manufacturers and importers of Strontium hydroxide (Sr(OH)2) are required to report information about their production and use of this chemical to the EPA under the Toxic Substances Control Act (TSCA). (40 eCFR Part 711)
REACH registered substance: Strontium hydroxide (EC: 242-367-1)
Strontium hydroxide (Sr(OH)2): Does not have an individual approval but may be used under an appropriate group standard
Other Safety InformationIMAP assessments - Strontium hydroxide (Sr(OH)2): Human health tier I assessment
Hazards SummaryAerosol causes muscle weakness and dyspnea in acute inhalation studies of rats; [RTECS] Causes burns; Inhalation may cause corrosive injuries to upper respiratory tract and lungs; Harmful by ingestion; [Sigma-Aldrich MSDS] See Strontium.
Hazard Classes and CategoriesAcute Tox. 4 (38.8%)
Safety & protection
Chemistry & industry
Uses & manufacturing
UsesUsed for refining sugar from beets and molasses; [Merck Index]
U.S. Production2020: 44,000 lb
Industry UsesNot Known or Reasonably Ascertainable
Use ClassificationCosmetics -> Buffering
General Manufacturing Information
Not Known or Reasonably Ascertainable
Strontium hydroxide (Sr(OH)2): ACTIVE
Applications
UsesStrontium hydroxide is used in extracting sugar from beet sugar molasses and in making lubricant soaps and greases.
DescriptionStrontium 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.
UsesExtraction of sugar from beet sugar molasses, lubricant soaps and greases, stabilizer for plastics, glass, adhesives.
UsesStrontium 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.
UsesStrontium 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.
Related reactions
9 records
Compound notes
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