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WebCyclopentyl methyl ether (stabilised) for synthesis. CAS 5614-37-9, molar mass 100.16 g/mol. H225: Highly flammable liquid and vapour. H302: Harmful if swallowed. H315: Causes skin irritation. H319: Causes serious eye irritation. P210: Keep away from heat, hot surfaces, sparks, open flames and other ignition sources. WebOn the Heavens (Greek: Περὶ οὐρανοῦ; Latin: De Caelo or De Caelo et Mundo) is Aristotle 's chief cosmological treatise: written in 350 BC, it contains his astronomical theory and his ideas on the concrete workings of the terrestrial world. It should not be confused with the spurious work On the Universe ( De mundo, also known as ... the new custom npc mod:
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