84797

Poli(etilenglicole)

BioUltra, 2,000

• Sinonimo/i: PEG
• Formula condensata: H(OCH₂CH₂)_nOH
• Numero CAS: 25322-68-3
• Numero MDL: MFCD00081839
• Codice UNSPSC: 12352104
• ID PubChem: 24888269
• NACRES: NA.26

Proprietà

• Livello qualitativo: 200
• Nome Commerciale: BioUltra
• Forma fisica: powder
• PM: M_r 1900-2200
• Impurezze: insoluble matter:, passes filter test; ≤0.001% peroxides (as H₂O₂):
• pH: 5.5-7.0 (25 °C, 50 mg/mL in H₂O)
• Punto di fusione: 50-53 °C
• Solubilità: H₂O: 50 mg/mL at 25 °C, clear, colorless
• Anioni in tracce: chloride (Cl^-): ≤50 mg/kg; sulfate (SO₄^2-): ≤50 mg/kg
• Cationi in tracce: Al: ≤5 mg/kg; As: ≤0.1 mg/kg; Ba: ≤5 mg/kg; Bi: ≤5 mg/kg; Ca: ≤10 mg/kg; Cd: ≤5 mg/kg; Co: ≤5 mg/kg; Cr: ≤5 mg/kg; Cu: ≤5 mg/kg; Fe: ≤5 mg/kg; K: ≤200 mg/kg; Li: ≤5 mg/kg; Mg: ≤5 mg/kg; Mn: ≤5 mg/kg; Mo: ≤5 mg/kg; Na: ≤200 mg/kg; Ni: ≤5 mg/kg; Pb: ≤5 mg/kg; Sr: ≤5 mg/kg; Zn: ≤5 mg/kg
• λ: 50 mg/mL in H₂O
• Assorbanza UV: λ: 260 nm A_max: ≤0.1; λ: 280 nm A_max: ≤0.04
• Stringa SMILE: C(CO)O
• InChI: 1S/C2H6O2/c3-1-2-4/h3-4H,1-2H2; LYCAIKOWRPUZTN-UHFFFAOYSA-N

Descrizione

Descrizione generale

Poly(ethylene glycol) (PEG) is a non-ionic hydrophilic polymer and is available in different molecular weights. It helps in the purification and crystal growth of proteins and nucleic acids. PEG and dextran together result in aqueous polymer two phase system, which is required for the purification of biological materials. PEG also interacts with cell membrane, thereby allowing cell fusion. It exhibitsstealth effect, prolonged blood circulation and excellent biocompatibility. PEG has an ability to elicit hypersensitivity reactions via stimulating complement pathway.

Applicazioni

Poly(ethylene glycol) has been used:

• as a constituent in the preparation of liquid desiccant solutions
• as a precipitating agent and additive in protein crystallization
• as a representative biocompatible polymer to decipher its interactions with cellular system at molecular level

Informazioni sulla sicurezza

• Codice della classe di stoccaggio: 10 - Combustible liquids
• Classe di pericolosità dell'acqua (WGK): WGK 1
• Punto d’infiammabilità (°F): 281.5 °F - closed cup
• Punto d’infiammabilità (°C): 138.6 °C - closed cup
• Dispositivi di protezione individuale: Eyeshields, Gloves, type N95 (US)