Krypton Kr Rare Gases CAS No.: 7439-90-9 EINECS No.: 231-098-5 UN No.: UN1056 Purity: 99.999% Dot Class: 2.2 Appearance: Colorless Grade Standard: Electron Grade, Industrial Grade Lighting: Krypton is used for inflating bulbs, miner's lamp, runway lights in airport. Medical Use: Krypton could be used as cerebral blood flow measurement. Electron Use: Krypton is used in airtight container leak detection and continuous determination of the material thickness.
