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| CAS No.: | 1310-82-3 |
|---|---|
| Name: | Rubidium hydroxide |
| Molecular Structure: | |
|
|
|
| Formula: | RbOH |
| Molecular Weight: | 101.467 |
| Synonyms: | Rubidiumhydroxide (7CI,8CI); |
| EINECS: | 215-186-0 |
| Density: | 1.74 g/mL at 25 °C |
| Melting Point: | 300-302°C |
| Boiling Point: | 100oC at 760 mmHg |
| Solubility: | soluble in water |
| Appearance: | clear colorless solution |
| Hazard Symbols: |
 C
|
| Risk Codes: | 20/21/22-34-22 |
| Safety: | 26-27-28-36/37/39-45 |
| Transport Information: | UN 2677 8/PG 2 |
| PSA: | 23.06000 |
| LogP: | -0.17680 |
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Chemistry
IUPAC Name: Rubidium(1+) hydroxide
Synonyms: RbOH ; Rubidium hydroxide ; Rubidium hydroxide ((sup 81)Rb) ; Rubidium hydroxide (81 Rb) Injection ; Rubidium hydroxide (Rb(OH)) ; Rubidium hydroxide [UN2678] [Corrosive] ; Rubidium hydroxide solution [UN2677] [Corrosive]
Product Categories: Chemical Synthesis;Inorganic BasesMetal and Ceramic Science;Rubidium Salts;Salts;Synthetic Reagents
Molecular Formula: RbOH
Molecular Weight: 102.47
Molecular Structure: 
CAS NO: 1310-82-3
EINECS: 215-186-0
Merck : 14,8285
Enthalpy of Vaporization: 40.65 kJ/mol
Boiling Point: 100 °C at 760 mmHg
Melting point:300-302°C
Density : 1.74 g/mL at 25 °C
Water Solubility: soluble
Sensitive: Hygroscopic
Vapour Pressure: 24.5 mmHg at 25°C
Appearance: Rubidium hydroxide (CAS NO. 1310-82-3) is clear colorless solution .
Uses
1. Rubidium hydroxide (CAS NO. 1310-82-3) is rarely used in industrial processes because potassium hydroxide and sodium hydroxide can perform nearly all the industrial functions of rubidium hydroxide in a less violent and hence safer way.
2.Rubidium hydroxide (CAS NO. 1310-82-3) is used in scientific research. It is often used sparingly to prevent waste of the expensive element rubidium.
3.Despite the fact that rubidium hydroxide is rarely used in normal industrial processes, it is notable that the synthesis of nearly all rubidium compounds involves rubidium hydroxide as an intermediate. Natural rubidium oxide is added to water, and the resulting reaction forms soluble rubidium hydroxide as a product.
Production
Rubidium hydroxide can be synthesized from rubidium oxide by dissolving the oxide into water:
Rb2O (s) + H2O (l) → 2 RbOH (aq)
Toxicity Data With Reference
| Organism | Test Type | Route | Reported Dose (Normalized Dose) | Effect | Source |
|---|---|---|---|---|---|
| mouse | LD50 | oral | 900mg/kg (900mg/kg) | "Novye Dannye Po Toksikologii Redkikh Metalov Ikh Soedinenii," New Data on the Toxicology of Rare Metals and Their Compounds, Izrael'son, Z.I., ed., Moscow, Izdatel'stvo "Meditsina," 196Vol. -, Pg. 56, 1967. | |
| rat | LD50 | oral | 586mg/kg (586mg/kg) | LUNGS, THORAX, OR RESPIRATION: RESPIRATORY STIMULATION GASTROINTESTINAL: OTHER CHANGES SKIN AND APPENDAGES (SKIN): HAIR: OTHER | Toxicology and Applied Pharmacology. Vol. 32, Pg. 239, 1975. |
Consensus Reports
Reported in EPA TSCA Inventory.
Safety Profile
Moderately toxic by ingestion. A powerful, corrosive irritant to skin, eyes, and mucous membranes. When heated to decomposition it emits toxic fumes of Rb2O. See also POTASSIUM HYDROXIDE and RUBIDIUM.
Hazard Codes
C
Risk Statements 20/21/22-34-22
R20/21/22:Harmful by inhalation, in contact with skin and if swallowed.
R34:Causes burns.
R22:Harmful if swallowed.
Safety Statements 26-27-28-36/37/39-45
S26: In case of contact with eyes, rinse immediately with plenty of water and seek medical advice.
S27:Take off immediately all contaminated clothing.
S28:After contact with skin, wash immediately with plenty of soap-suds.
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 the label whenever possible.)
RIDADR UN 2677 8/PG 2
WGK Germany 3
RTECS VL8750000
HazardClass 8
PackingGroup II
Standards and Recommendations
DOT Classification: 8; Label: Corrosive
Specification
1.General Description: A clear aqueous solution. Very caustic. Very irritating to skin and eyes. Used in electric storage batteries.
Air & Water Reactions: Absorbs carbon dioxide from the air. May generate large amounts of heat when diluted with water.
2.Reactivity Profile A strong base. Forms caustic solution in water .
3.Health Hazard :TOXIC; inhalation, ingestion or skin contact with material may cause severe injury or death. Contact with molten substance may cause severe burns to skin and eyes. Avoid any skin contact. Effects of contact or inhalation may be delayed. Fire may produce irritating, corrosive and/or toxic gases. Runoff from fire control or dilution water may be corrosive and/or toxic and cause pollution.
4.Fire Hazard : Non-combustible, substance itself does not burn but may decompose upon heating to produce corrosive and/or toxic fumes. Some are oxidizers and may ignite combustibles (wood, paper, oil, clothing, etc.). Contact with metals may evolve flammable hydrogen gas. Containers may explode when heated.