Cell membrane stabilizer; anti-foaming agent. Pluronic® PE 6800 is a low-foam­ing, non­ionic sur­fac­tant. It is a block copolym­er in which the cen­tral poly­pro­py­lene gly­col group is ­flanked by two polyeth­y­lene gly­col ­groups.||Synonyms:|F68; Poloxamer 188; Polyoxyethylene-polyoxypropylene block copolymer; Pluronic PE 6800||CAS Number:|9003-11-6||Molecular Formula:|(C3H6O.C2H4O)x||Appearance:|White to off-white powder or flakes||Identity (IR):|Conforms to structure||Heavy Metals:|≤0.002%||Pluronic® PE 6800 Value|Physical form (23 °C) Powder|Molar mass (OH number) ~8000g/mol |Concentration ~100%|Cloud point (EN 1890) |Method A >100°C|Method B ~88°C|Method C ~72°C|Method D ~90°C|Method E ~95°C|pH-value (EN 1262, Solution B) ~7|Density (DIN 51757, Method A, 70 °C) ~1.06g/cm3|Bulk Density (ISO 697) ~600g/L|Melting Point ~48°C|Wetting (EN 1772, 23°C, 2g/L soda ash, 1g/L surfactant) >300|Surface Tension (EN 14370, 1g/L, 23°C) ~51mN/m|Circulation Foam (EN 14371, 0.1g/L, 25°C)| 1 min 870ml| 10 min 1350ml|5 min. after pumping stopped 1190ml|HLB****||Storage and Stability:|Store at 4ºC. Stable for 12 months after receipt. Pluronic® PE 6800 ­should be kept t­ightly ­sealed in a dry place in its ­tightly sealed orig­i­nal pack­ag­ing. Store­rooms must not be over­heated.|Pluronic® PE 6800 is hygro­scopic and sol­u­ble in water, with the r­esult that it absorbs mois­ture very ­quickly. Drums ­should be t­ ightly ­resealed each time mate­rial is taken from them. Pluronic® PE 6800 should be stored in a dry place at a temperature not exceeding 25-30°C. It must be protected from sunlight to ensure that it does not form lumps.