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KRYPTON

KRYPTON Suppliers list
Company Name: Sigma-Aldrich  
Tel: 021-61415566 800-819-3336(Tel) 400-620-3333(Mobile)
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Products Intro: Product Name:Krypton Messer(R) CANGas, 99.99%
CAS:7439-90-9
Purity:Messer(R) CANGas, 99.99% Package:1974.96RMB/1L Remarks:ALDRICH
Company Name: Shanghai wechem chemical co., ltd  
Tel: 021-5198 7501
Email: info@wechem.cn
Products Intro: Product Name:Krypton
CAS:7439-90-0
Purity:99.9+ Package:50L
Company Name: Tianjin East Special Gas Co., Ltd  
Tel: 022-58136678
Email: dongxiangteqi@sina.com
Products Intro: CAS:7439-90-9
Company Name: Shanghai Trustin Chemical Co., Ltd  
Tel: 021-61086350
Email: sales@etrustin.com
Products Intro: CAS:7439-90-9
Company Name: RAIMS Limited   
Tel: +44 (1442) 345-063
Email: raims.isotopes@gmail.com
Products Intro:
KRYPTON Basic information
Product Name:KRYPTON
Synonyms:Liquid krypton;KRYPTON;Krypton,compressed;Krypton,refrigerated liquid;Kr;KRYPTON, PRESSURE TIN WITH 1000 ML;36Kr;Chebi:49696
CAS:7439-90-9
MF:Kr
MW:83.8
EINECS:231-098-5
Product Categories:refrigerants;Inorganics;Chemical Synthesis;Compressed and Liquefied GasesMicro/Nanoelectronics;Electronic Chemicals;Gases;Synthetic Reagents;Chemical Synthesis;Electronic Chemicals;Materials Science;Micro/NanoElectronics;Specialty Gases;Synthetic Reagents
Mol File:7439-90-9.mol
KRYPTON Structure
KRYPTON Chemical Properties
Melting point -157℃
Boiling point bp -153.35°
density 908 kg/m3; d0 (101.3 kPa) 3.7493 kg/m3; d (normal bp) 8.6 kg/m3; d (normal bp) 2415 kg/m3; d (triple pt) 2451 kg/m3; d (triple pt) 2826 kg/m3
form colorless gas
Water Solubility 59.4mL/1000g H2O (20°C) [KIR78]; Henry’s law constants, k×10?4: 3.685 (70.2°C), 4.017 (175.0°C), 3.761 (175.0°C), 2.392 (252.5°C) [POT78]
Merck 13,5340
Stability:Stable and unreactive; not combustible.
Safety Information
Safety Statements 9-38
RIDADR UN 1950 2.2
WGK Germany 3
4.5-31
HazardClass 2.2
MSDS Information
ProviderLanguage
SigmaAldrich English
KRYPTON Usage And Synthesis
Chemical Propertiescolourless gas
HistoryDiscovered in 1898 by Ramsay and Travers in the residue left after liquid air had nearly boiled away, krypton is present in the air to the extent of about 1 ppm. The atmosphere of Mars has been found to contain 0.3 ppm of krypton. It is one of the “noble” gases. It is characterized by its brilliant green and orange spectral lines. Naturally occurring krypton contains six stable isotopes. Thirty other unstable isotopes and isomers are now recognized. The spectral lines of krypton are easily produced and some are very sharp. In 1960 it was internationally agreed that the fundamental unit of length, the meter, should be defined in terms of the orange-red spectral line of 86Kr. This replaced the standard meter of Paris, which was defined in terms of a bar made of a platinum-iridium alloy. In October 1983 the meter was again redefined by the International Bureau of Weights and Measures as being the length of path traveled by light in a vacuum during a time interval of 1/299,792,458 of a second. Solid krypton is a white crystalline substance with a face-centered cubic structure that is common to all the rare gases. While krypton is generally thought of as a noble gas that normally does not combine with other elements, the existence of some krypton compounds has been established. Krypton difluoride has been prepared in gram quantities and can be made by several methods. A higher fluoride of krypton and a salt of an oxyacid of krypton also have been prepared. Molecule-ions of ArKr+ and KrH+ have been identified and investigated, and evidence is provided for the formation of KrXe or KrXe+. Krypton clathrates have been prepared with hydroquinone and phenol. 85Kr has found recent application in chemical analysis. By imbedding the isotope in various solids, kryptonates are formed. The activity of these kryptonates is sensitive to chemical reactions at the surface. Estimates of the concentration of reactants are therefore made possible. Krypton is used in certain photographic flash lamps for highspeed photography. Uses thus far have been limited because of its high cost. Krypton gas presently costs about $690/100 L.
General DescriptionKrypton, refrigerated liquid, is a colorless, odorless gas. KRYPTON is shipped as a liquid under its own vapor pressure. Contact with the liquid may cause frostbite to unprotected skin. KRYPTON can asphyxiate by displacement of air. Exposure of the container to prolonged heat or fire may cause KRYPTON to rupture violently and rocket.
Reactivity ProfileThese substances undergo no chemical reactions under any known circumstances. They are nonflammable, noncombustible and nontoxic. They can asphyxiate. Contact of very cold liquefied gas with water may result in vigorous or violent boiling of the product and extremely rapid vaporization due to the large temperature differences involved. If the water is hot, there is the possibility that a liquid "superheat" explosion may occur. Pressures may build to dangerous levels if liquid gas contacts water in a closed container [Handling Chemicals Safely 1980].
Health HazardVapors may cause dizziness or asphyxiation without warning. Vapors from liquefied gas are initially heavier than air and spread along ground. Contact with gas or liquefied gas may cause burns, severe injury and/or frostbite.
Fire HazardNon-flammable gases. Containers may explode when heated. Ruptured cylinders may rocket.
KRYPTON Preparation Products And Raw materials
Preparation ProductsXENON
Raw materialsAmmonia-->CARBON DIOXIDE-->CARBON MONOXIDE-->Argon-->BROMOCHLORODIFLUOROMETHANE-->XENON
Tag:KRYPTON(7439-90-9) Related Product Information
Krypton-81m Krypton-86Kr Krypton-84Kr Krypton-78Kr Krypton difluoride,Krypton(II) difluoride KRYPTON-82 82KR, 99%+ krypton monofluoride krypton fluoride Krypton86 NOBLE GAS STANDARD NB-2 FLUORINE AND KRYPTON,FLUORINE, KRYPTON NOBLE GAS STANDARD NB-1 78KR 83KR 86KR 80KR 82KR KRYPTON