rubidium
Rubidium atomic absorption standard solution
CAS: 7440-17-7
Molecular Formula: Rb
rubidium - Names and Identifiers
| Name | Rubidium atomic absorption standard solution |
| Synonyms | 37Rb Rubidio Rubidium RUBIDIUM ICP STANDARD TRACEABLE TO SRM F Rubidium atomic absorption standard solution |
| CAS | 7440-17-7 |
| EINECS | 231-126-6 |
| InChI | InChI=1/Rb |
rubidium - Physico-chemical Properties
| Molecular Formula | Rb |
| Molar Mass | 85.47 |
| Density | 1.53 g/mL at 25 °C (lit.) |
| Melting Point | 38-39 °C (lit.) |
| Boling Point | 686 °C (lit.) |
| Water Solubility | soluble in acids and alcohol [HAW93] |
| Appearance | ingot |
| Specific Gravity | 1.532 |
| Color | Silver |
| Exposure Limit | ACGIH: TWA 2 ppm; STEL 4 ppmOSHA: TWA 2 ppm(5 mg/m3)NIOSH: IDLH 25 ppm; TWA 2 ppm(5 mg/m3); STEL 4 ppm(10 mg/m3) |
| Merck | 13,8363 |
| Sensitive | moisture sensitive |
| Use | Used for making photovoltaic cells, Phototubes and catalysts |
rubidium - Risk and Safety
| Risk Codes | R36/37/38 - Irritating to eyes, respiratory system and skin. R36/38 - Irritating to eyes and skin. R34 - Causes burns R14/15 - |
| Safety Description | S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S36/37/39 - Wear suitable protective clothing, gloves and eye/face protection. S43 - In case of fire use ... (there follows the type of fire-fighting equipment to be used.) S45 - In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.) S36 - Wear suitable protective clothing. |
| UN IDs | UN 2031 8/PG 2 |
| WGK Germany | 3 |
| RTECS | VL8500000 |
| TSCA | Yes |
| Hazard Class | 8 |
| Packing Group | III |
rubidium - Nature
Open Data Verified Data
The silvery white waxy soft metal is slightly yellow when it contains impurities. Melting point 39 ° C; Boiling point 688 ° C; D201.532; Hardness 0.3. Rubidium vapor is magenta at 180 °c and orange at temperatures above 250 °c. In the humid air can spontaneous combustion, water chemical reaction to release hydrogen and heat caused by combustion explosion. Chemical reaction activity is high, the chemical properties of rubidium and potassium similar, but more active than potassium; And halogen, phosphorus, sulfur and other intense chemical reaction, causing combustion.
Last Update：2025-06-10 22:55:16
rubidium - Preparation Method
Open Data Verified Data
can be obtained from electrolytically melted rubidium chloride or rubidium cyanide.
Last Update：2025-06-10 22:55:16
rubidium - Application
Open Data Verified Data
rubidium has excellent photoelectric performance, the use of light wave range, high sensitivity, stability, is the main photosensitive material for the manufacture of photoelectric tube, in many communication, automatic control equipment, television, photometers and other fields have to be used in the phototube. The accuracy of the rubidium atomic clock can reach one part per trillion, and the power required is small, the volume is small, and the weight is light. Rubidium is highly ionizable and can be used as a dielectric for solid state batteries. Rubidium and alloys of potassium, sodium, and cesium can be used to remove residual gases from high vacuum systems. Rubidium, rubidium sodium, rubidium lithium and other alloys can be used as working fluids for carrying nuclear power systems. Rubidium and its compounds have good catalytic properties in many reactions. Rubidium can be formulated as a fusible alloy and as an additive for special alloys.
Last Update：2025-08-19 16:24:40
rubidium - Safety
Open Data Verified Data
mice were injected intraperitoneally with LDso:1200mg/kg. Fire, with dry sand, dry powder, powder, no water, foam and carbon dioxide.
Last Update：2025-06-10 22:55:16
rubidium - Reference Information
| resistivity | 11.0 ***-CM, 20°C |
| EPA chemical substance information | information provided by: ofmpeb.epa.gov (external link) |
| Overview | rubidium is a chemical element with the symbol Rb and atomic number 37. Rubidium is a soft, silvery white metal, belonging to the alkali metal, atomic weight of 85.4678. Rubidium is highly reactive and has properties similar to those of other alkali metals, such as rapid oxidation in air. The naturally occurring rubidium element is composed of two isotopes: 85Rb is the only stable isotope, accounting for 72%;87Rb is slightly radioactive, accounting for 28%, and its half-life is 49 billion years, more than three times the age of the universe. |
| Discovery History | in 1861, Robert William Ben and Gustav Kirchhoff in Heidelberg, Germany, the rubidium element was found in Lepidolite by spectrometer. Because the emission spectrum showed a number of distinct red lines, they chose the Latin word "rubidus", which means "deep red", to name it. |
| Source | the abundance of rubidium in the Earth's crust ranks 23th among all elements, is similar to zinc, and is more common than copper. It naturally occurs in leucite, cesium aragonite, carnallite and iron Lepidolite and other minerals, rubidium oxide accounted for about 1% of these minerals. Lepidolite contains between 0.3% and 3.5% of rubidium and is the main commercial source of rubidium. Some potassium-containing minerals and potassium chloride will contain a lot of rubidium elements, there are commercial mining value. |
| Application | rubidium and its compounds are widely used: sometimes added to fireworks to make it emit violet light. Rubidium can be used in magnetic fluid engines and heat transfer generators: Rubidium ions formed at high temperatures pass through magnetic fields; Laser diodes can be made. Other potential applications of rubidium include working fluids in steam turbines, getters in vacuum tubes, and photometric sensor elements. Rubidium is a component of some special glass, can also be used to make superoxide. It can replace the position of potassium in the cell, so it can be used to study ion channels. Rubidium gas is also used in atomic magnetometers. |
| preparation | preparation of rubidium: reduction of rubidium chloride with calcium by metal thermal reduction, reduction of Rubidium carbonate with magnesium or calcium carbide, rubidium metal can be obtained. The extraction of rubidium compounds: the main methods are double salt precipitation, solvent extraction, ion exchange and other methods. |
| safety information | rubidium metal reacts vigorously with water and even fires, even when placed in kerosene, it also reacts slowly and is oxidized by a small amount of dissolved oxygen. Thus, rubidium is typically stored in vacuum ampoules or ampoules filled with a noble gas such as argon. Rubidium turns into rubidium peroxide by exposure to a small amount of air, including oxygen that penetrates into the oil. Therefore, its safety measures are similar to those of potassium metal. |
| Application | used in the manufacture of photovoltaic cells, photoelectric cells and catalysts, used in the manufacture of photovoltaic cells, vacuum tubes and catalysts, etc. for ICP-AES, AAS, AFS, ICP-MS, ion chromatography, etc. Standard solutions were used for titration analysis. |
| category | water burning articles |
| toxicity grade | poisoning |
| Acute toxicity | intraperitoneal-mouse LD50: 1200 mg/kg |
| explosive hazard characteristics | explosion of hydrogen emitted by water and moist air |
| flammability hazard characteristics | when water or moist air emits hydrogen |
| storage and transportation characteristics | The warehouse is ventilated and dried at low temperature; It is not stored in hydrocarbons; It is mixed with oxidants, halogens, strong acid stored separately |
| extinguishing agent | dry powder, dry sand, dry powder |
Last Update：2024-04-09 20:49:11
Supplier List
Spot supply
Product Name: Rubidium standard Request for quotationCAS: 7440-17-7
Tel: 400-968-2212
Email: 3623107365@qq.com
Mobile: 18916960931
QQ: 3623107365
Wechat: 18916960931
Spot supply
Product Name: Rubidium standard Visit Supplier Webpage Request for quotationCAS: 7440-17-7
Tel: +86-400-900-4166
Email: product@acmec-e.com
Mobile: +86-18621343501
QQ: 2881950922
Wechat: 18621343501
WhatsApp: +86-18621343501
Spot supply
Product Name: RubidiuM99.75 (Metals basis) Visit Supplier Webpage Request for quotationCAS: 7440-17-7
Tel: +86 0571-86722205
Email: sales@chinaskyrun.com
Mobile: +8618958170122
QQ: 2531159185
Wechat: chinaskyrun
Spot supply
Product Name: Rubidium standard Request for quotationCAS: 7440-17-7
Tel: 400-968-2212
Email: 3623107365@qq.com
Mobile: 18916960931
QQ: 3623107365
Wechat: 18916960931
Spot supply
Product Name: Rubidium standard Visit Supplier Webpage Request for quotationCAS: 7440-17-7
Tel: +86-400-900-4166
Email: product@acmec-e.com
Mobile: +86-18621343501
QQ: 2881950922
Wechat: 18621343501
WhatsApp: +86-18621343501
Spot supply
Product Name: RubidiuM99.75 (Metals basis) Visit Supplier Webpage Request for quotationCAS: 7440-17-7
Tel: +86 0571-86722205
Email: sales@chinaskyrun.com
Mobile: +8618958170122
QQ: 2531159185
Wechat: chinaskyrun
View History