189464

Poli(etilene ossido)

average M_V 4,000,000 (nominal), powder, hydroxyl, BHT as inhibitor

• Sinonimo/i: PEO
• Formula condensata: (-CH₂CH₂O-)_n
• Numero CAS: 25322-68-3
• Numero MDL: MFCD00081839
• Codice UNSPSC: 12352104
• ID PubChem: 24851382
• NACRES: NA.23

Proprietà

• product name: Poli(etilene ossido), average M_v ~4,000,000 (nominal), contains <1000 ppm BHT as inhibitor
• Forma fisica: powder
• Livello qualitativo: 100
• PM: average M_v ~4,000,000 (nominal)
• contiene: <1000 ppm BHT as inhibitor; 100-1000 ppm BHT as inhibitor
• Viscosità: 1,650-5,500 cP, 1 % in H₂O(25 °C, Brookfield)(lit.)
• Temp. transizione: T_m 65 °C
• Densità: 1.21 g/mL at 25 °C
• Gruppo funzionale: hydroxyl
• Stringa SMILE: [H]OCCO
• InChI: 1S/C2H6O2/c3-1-2-4/h3-4H,1-2H2; LYCAIKOWRPUZTN-UHFFFAOYSA-N

Descrizione

Descrizione generale

Poly (ethylene oxide) (PEO) is a crystalline thermoplastic polymer. It is usually available over a wide range of molecular weights; the higher molecular weight entities are called poly (ethylene oxide), poly-oxyethylene or polyoxirane.

Applicazioni

PEO may be used to afford PEO-salt complexes which are act as polymeric electrolytes to be used for alkali metal rechargeable batteries. PEO-polyester micelles have been reportedly used for drug delivery. PEO hydrogels have been reported to be used for culture media, replacing agar. Cross-linked PEO may be used for drug delivery and blood filtration. Compounds form association complexes with high molecular weight PEO; for example:

• bromine combines with PEO in controlled release,
• carboxymethyl dextran and carechol tannis form complexes with PEO to act as adhesives,
• copolymer of methyl vinyl ether and maleic anhydride form complex with PEO for its use in microencapsulation of non aqueous inks.

Industrially, PEO may be used to modify bituminous emulsion in paving compositions and as a dispersant for calamine lotion.

Informazioni sulla sicurezza

• Codice della classe di stoccaggio: 11 - Combustible Solids
• Classe di pericolosità dell'acqua (WGK): WGK 1
• Punto d’infiammabilità (°F): Not applicable
• Punto d’infiammabilità (°C): Not applicable
• Dispositivi di protezione individuale: Eyeshields, Gloves, type N95 (US)