氙气
Xenon
CAS: 7440-63-3
Molecular Formula: Xe
氙气 - Names and Identifiers
氙气 - Physico-chemical Properties
| Molecular Formula | Xe |
| Molar Mass | 131.29 |
| Density | 1100 kg/m3; d0 (101.3 kPa) 5.8971 kg/m3; d (normal bp) 11 kg/m3; d (normal bp) 3057 kg/m3; d (triple pt) 3084 kg/m3; d (triple pt) 3540 kg/m3 |
| Melting Point | -111.79°C |
| Boling Point | bp -108.13° |
| Water Solubility | 101.32kPa: 108.1mL/1000g H2O (20°C) [KIR78]; Henry’s law constants, k×10?4: 2.558 (70.3°C), 2.586 (125.5°C), 2.485 (175.7), 2.048 (225.1°C), 1.308 (284.2°C) [POT78] |
| Vapor Presure | 47500mmHg at 25°C |
| Appearance | colorless gas |
| Merck | 13,10129 |
| Physical and Chemical Properties | Colorless gas, not burning, also does not combustion. Can absorb X-rays. The relative density of gas is 5.887±0.009, the relative density of liquid is 3.52(100 ℃), and the relative density of solid is 2.7(-140 ℃). The critical temperature is 16.6 ℃, the critical pressure is 58.2 × 100, and the critical density is 1.155. It is a natural rare gas with the highest relative atomic mass and density. Among the rare gases, the most prepared compounds are xenon, such as xenon hexafluoroplatinic acid (XePtF6), xenon hexafluorophosphate (XePFA6), xenon hexafluororhodium acid (XeRhF7), xenon difluoride (XeF2), xenon oxide, etc. Has a very high luminous intensity. |
氙气 - Risk and Safety
| Hazard Symbols | T - Toxic |
| Safety Description | S9 - Keep container in a well-ventilated place. S38 - In case of insufficient ventilation, wear suitable respiratory equipment. |
| UN IDs | UN 2036 2.2 |
| WGK Germany | 3 |
| FLUKA BRAND F CODES | 4.5-31 |
| Hazard Class | 2.2 |
氙气 - Nature
Open Data Verified Data
a colorless gas, which does not burn and does not support combustion. Can absorb X-rays. The relative density of gas is 5. 887 0.009, the relative density of liquid is 3.52(-100 ℃), and the relative density of solid is 2.7(-140 ℃). The critical temperature is 16.6 ℃, the critical pressure is 58.2 × l05 PA. The critical density is 1. 155. It is a natural rare gas with the highest relative atomic mass and density. Among the rare gases, the most prepared compounds are xenon, such as xenon hexafluoroplatinic acid (XePtFa), xenon hexafluorophosphate (Xe-PF6), xenon hexafluororhodium acid (XeRhF6), xenon difluoride (XeF2), xenon oxide, etc. Has a very high luminous intensity.
Last Update：2024-01-02 23:10:35
氙气 - Preparation Method
Open Data Verified Data
- Air separation method: the mixture of krypton and xenon is extracted from the air separation unit, and the lean Krypton is extracted by distillation, hydrocarbons and carbon dioxide are removed, separated and refined to obtain 99. 99% pure xenon.
- xenon is extracted from the tail gas of ammonia synthesis. In the process of extracting argon from the tail gas, krypton and xenon contained in liquid methane in the methane tower are further subjected to rectification, washing, oxygen removal, adsorption, 95% xenon was obtained after desorption.
Last Update：2022-01-01 11:06:42
氙气 - Use
Open Data Verified Data
widely used in electronic, electric light source industry. Compared with the same power of the filled argon bulb, the bulb filled with xenon gas has the advantages of high luminous rate, small size, long service life, power saving and so on. Because of its ability to penetrate the fog is particularly strong, commonly used as a fog navigation lights, widely used in the airport, station, terminal. Xenon lamp concave light collection can be generated after 2500 ℃ high temperature, can be used for welding or cutting refractory metals such as titanium, molybdenum and so on. In medicine, xenon is a deep anesthetic without side effects, a contrast agent for X-ray photography.
Last Update：2022-01-01 11:06:42
氙气 - Safety
Open Data Verified Data
is a non-combustible gas, risk code: GB2.2 class 2. UN No. (Compressed) GB 2.2 class 220160 UN N0.25910 IMDG CODE 2188 pages, Class 4. (Liquefied). Packed with 6ma steel bottle or 2L ampoule bottle, protected with external wooden case or carton. Store in a cool, dry place. Protection against high temperature. During storage, transportation, and handling, the packaging should be protected from breakage. In case of fire, it can be suppressed by water and various fire-retardants.
Last Update：2022-01-01 11:06:43
氙气 - Reference Information
| EPA chemical information | Information provided by: ofmpub.epa.gov (external link) |
| Introduction | Xenon is a chemical element, the chemical symbol is Xe, and the atomic number is 54. Xenon is a colorless, odorless inert gas. The earth's atmosphere contains traces of xenon. Although the chemical activity of xenon is very low, it can still undergo chemical reactions, such as the formation of xenon hexafluoroplatinate-the first rare gas compound to be synthesized. Naturally produced xenon is composed of 7 stable isotopes. Xenon also has more than 40 unstable isotopes capable of radioactive decay. The relative proportions of xenon isotopes play an important role in studying the early history of the solar system. |
| Discovery history | British chemists William Ramsey and Morris Travers (Morris Travers) discovered krypton and neon on July 12, 1898 Xenon was found in the residue after evaporating liquid air. Ramsey suggested that this new element be named "xenon", which is derived from the Greek "ξ υνον" (xenon), that is, the neutral singular form of "ξ υνος" (xenos), meaning outsiders, strangers or strangers. In 1902, Ramsey estimated that the content of xenon in the earth's atmosphere was one in 20 million. |
| Source | Xenon is a trace gas in the earth's atmosphere, with a content of about 87±1/1 billion (nL/L), which is one in 11.5 million. Some natural mineral springs also release xenon-containing gas. Xenon is a by-product of the air nitrogen and oxygen separation process. |
| Application | Xenon can be applied to the following aspects: 1. It can be used in flash lamps and arc lamps; 2. It is used as a general anesthetic; 3. The earliest excimer The laser design uses the xenon dimer molecule (Xe2) as the laser medium, and the early laser design also uses the xenon flash lamp for laser pumping. 4. Xenon can also be used to find massive weakly interacting particles, or as a propellant for spacecraft ion thrusters. |
| Preparation | Xenon can be obtained from air by liquefaction and fractionation. First, liquefy air, fractionated liquid oxygen, and rare gas are enriched in it. Through further fractionation, purification can separate the mixed liquid of rare gas. Activated carbon is used for adsorption at 173K. Ar,Kr and Xe are adsorbed. Xenon can be obtained by changing temperature and other conditions. |
| safety information | xenon is an inert gas, almost all inert gas, non-toxic and non-flammable. Some of its compounds are toxic and can be explosive, but there is little chance of daily contact with them. |
| use | widely used in electronics and electric light source industries. Compared with argon-filled bulbs with the same power, xenon-filled bulbs have the advantages of high luminous rate, small size, long life, and power saving. Because of its strong fog penetration ability, it is often used as a fog navigation light and is widely used in airports, stations, and docks. The concave surface of the xenon lamp can generate a high temperature of 2500 ℃, which can be used for welding or cutting refractory metals such as titanium and molybdenum. In medicine, xenon is a deep anesthetic without side effects, a contrast agent for X-ray photography. |
| production method | air separation method extracts krypton and xenon mixture from air separation unit, extracts lean krypton through rectification, removes hydrocarbons and carbon dioxide, separates and refines, and produces 99.99% pure xenon. Xenon is extracted from the exhaust gas of synthetic ammonia. In the process of argon extraction from the exhaust gas, the krypton and xenon contained in the liquid methane of the methane tower can be rectified, washed, deoxygenated, adsorbed, and desorbed to obtain 95% xenon. |
| category | harmful gases |
| toxicity classification | low toxicity |
| acute toxicity | inhalation-mouse TCL0 67000 ppm |
| explosive hazard characteristics | cylinder can explode with high heat |
| flammability hazard characteristics | non-combustible; can be suffocating |
| storage and transportation characteristics | warehouse ventilation and low temperature drying; light loading and unloading |
| fire extinguishing agent | water, carbon dioxide, dry powder, foam |
| DOT Classification | 2.2 (Nonflammable gas) |
Last Update：2024-04-09 21:04:16
Supplier List
Spot supply
Product Name: Xenon Visit Supplier Webpage Request for quotationCAS: 7440-63-3
Tel: +86 0571-86722205
Email: sales@chinaskyrun.com
Mobile: +8618958170122
QQ: 2531159185
Wechat: chinaskyrun
Spot supply
Product Name: Xenon Visit Supplier Webpage Request for quotationCAS: 7440-63-3
Tel: +86 0571-86722205
Email: sales@chinaskyrun.com
Mobile: +8618958170122
QQ: 2531159185
Wechat: chinaskyrun
View History