Strontiumhydroxid
Sr(OH)2 · Einecs 242-367-1 · STRONTIUM HYDROXIDE · Strontium dihydoxide · Stronitium hydroxide · strontiumdihydroxide · StrontiuM hydroxide 94% · StrontiuM hydroxide,97%
Identifikatoren & physikalische Daten
| CAS No. | 18480-07-4 |
|---|---|
| Summenformel | H2O2Sr |
| Durchschnittliche Molmasse | 121,63 g/mol |
| SMILES | [OH-].[OH-].[Sr+2] |
| InChIKey | UUCCCPNEFXQJEL-UHFFFAOYSA-L |
| PubChem CID | 87672 |
| ChEBI | CHEBI:35105 |
| EC No. | 242-367-1 |
| Lokaler Name | Strontiumhydroxid |
Chemische & physikalische Eigenschaften
| Polarare Oberfläche (TPSA) | 2 |
|---|---|
| H-Brücken-Donoren | 2 |
| H-Brücken-Akzeptoren | 2 |
| Frei drehbare Bindungen | 0 |
| Schwere Atome | 3 |
| Formalladung | 0 |
| Komplexität | 0 |
| Stoffklassen | Metals -> Metals, Inorganic Compounds |
| Kosmetika | Buffering |
| Physical Description | Octahydrate: Colorless or white deliquescent solid[Merck Index] White powder[Sigma-Aldrich MSDS] |
| Schmelzpunkt | 535°C |
| Siedepunkt | 710 °C (decomposes) |
| Dichte | 3.625 |
| Dampfdruck | 0Pa at 20℃ |
| Brechungsindex | 1.650 |
| Aggregatzustand | colorless orthorhombic crystals |
| Farbe | colorless orthorhombic crystals, crystallinehygroscopic |
| pH | 11.27(1 mM solution)12.22(10 mM solution)13.09(100 mM solution) |
| Geruch | Odorless |
| Löslichkeit | 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. |
| Kosmetik-Inhaltsstoffe Funktionen | BUFFERING |
| InChI | 1S/2H2O.Sr/h2*1H2/q+2/p-2 |
| InChIKey | UUCCCPNEFXQJEL-UHFFFAOYSA-L |
| SMILES | O[Sr]O |
| 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 & Vorschriften
| GHS-Einstufung | DangerH302 (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. |
|---|---|
| Regulatorische Informationen | 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)Status: Active Update: 28-02-2023 https://echa.europa.eu/registration-dossier/-/registered-dossier/13438Strontium hydroxide (Sr(OH)2): Does not have an individual approval but may be used under an appropriate group standard |
| Weitere Sicherheitsinformationen | IMAP assessments - Strontium hydroxide (Sr(OH)2): Human health tier I assessment |
| Gefahrenübersicht | Aerosol causes muscle weakness and dyspnea in acute inhalation studies of rats[RTECS] Causes burnsInhalation may cause corrosive injuries to upper respiratory tract and lungsHarmful by ingestion[Sigma-Aldrich MSDS] See Strontium. |
| Hazard Classes and Categories | Acute Tox. 4 (38.8%) |
| Protective Action Criteria (PAC) | 0.89 [mg/m3]9.8 [mg/m3]59 [mg/m3] |
| Unerwünschte Wirkungen | Dermatotoxin - Skin burns. |
| Wassergefährdungsklasse (WGK) | 3 |
| TSCA-Inventar-Status | TSCA listed |
| UN-Transportnummer | UN 3262 8/PG 2 |
| Zollcode | 28164000 |
| RTECS-Nr. | WK9100000 |
| R-Sätze (R) | 34 |
| Gefahrensymbole | C |
| Sicherheitshinweise (S) | 26-27-36/37/39-45 |
| Gefahrenklasse | 8Eye Dam. 1Skin Corr. 1B |
| Verpackungsgruppe | III |
| Lagerklasse | 8B - Non-combustible corrosive hazardous materials |
Anwendungen & Verwendung
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.
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.
Herstellung & Synthese
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.