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美国Polysciences公司Polyethylenimine 23966-2现货促销！北京乐博生物！ Polyethylenimine, Linear (MW 25,000) Catalog No： 23966-2 Packaging Size： 2 g CAS Number: 9002-98-6 Linear polyethylenimines (PEIs) contain all secondary amines, in contrast to branched PEIs which contain primary, secondary and tertiary amino groups. The linear PEIs are solids at room temperature where branched PEIs are liquids at all molecular weights. Soluble in hot water, cold water at low pH, methanol, and ethanol. One end of the polymer chain methyl; other end hydroxyl. Contains up to 7-8% of poly(2-ethyl-2-oxazoline) Insouble in: benzene, ethyl ether, acetone and cold water. Formula: (C2H5N)x Molecular Weight: 25,000 Melting Point: 73-75o TSCA Hazards: Unknown Handling: Gloves & fume hood Storage: Store at room temperature Code: U5g - (hazard/handling/storage codes) 北京乐博生物科技有限公司！