8.21881

Polyethylenglykol

10000, for synthesis

• Synonym(e): Poly(ethylenglykol), Polyglycol, Polyethylenoxid, PEG 10000, Polyoxyethylen, PEG
• Lineare Formel: H(OCH₂CH₂)_nOH
• CAS-Nummer: 25322-68-3
• MDL-Nummer: MFCD00081839
• UNSPSC-Code: 13111021
• EG-Index-Nummer: 500-038-2
• NACRES: NA.22

Eigenschaften

• Dampfdruck: <0.01 hPa ( 20 °C)
• Qualitätsniveau: 200
• Form: liquid
• Selbstzündungstemp.: 340 °C
• Wirksamkeit: 28000 mg/kg LD₅₀, oral (Rat); >20000 mg/kg LD₅₀, skin (Rabbit)
• pH-Wert: 5-7 (20 °C, 100 g/L in H₂O)
• kinematic viscosity: 500-900 cSt(20 °C)
• mp (Schmelzpunkt): 58-63 °C
• Übergangstemp.: flash point 265 °C
• Dichte: 1.2 g/cm³ at 20 °C
• Schüttdichte: 400‑500 kg/m³
• Lagertemp.: no temp limit
• SMILES String: C(CO)O
• InChI: 1S/C2H6O2/c3-1-2-4/h3-4H,1-2H2
• InChIKey: LYCAIKOWRPUZTN-UHFFFAOYSA-N

Beschreibung

Allgemeine Beschreibung

Polyethylene glycol (PEG) is a synthetic, hydrophilic, biocompatible polymer that has a wide range of uses in PEGylation, surface conjugation, nanoparticle coating, and crosslinking for hydrogels. PEGs are made by polymerizing ethylene oxide via a ring-opening reaction to produce a wide range of molecular weights and molecular weight distributions (polydispersity).

Anwendung

Polyethylene glycol 10000 can be used as a surfactant in the synthesis of Ni₁₂P₅ hollow microspheres via the hydrothermal method in the presence of hexamethylenetetramine (HMT). PEG 10000 significantly improves the formation of high-quality hollow microspheres, without this surfactant morphology is near-spherical particles.
It can also be used as:

• A reactant to synthesize N-PEGylated-thiazolium salt, which is used as an organocatalyst for the benzoin condensation.
• A nonionic dispersive agent in the preparation Nd₂Si₂O₇ ceramic pigment by a co-precipitation method.

Hinweis zur Analyse

Schmelzbereich (unterer Wert): ≥ 59 °C
Schmelzbereich (oberer Wert): ≤ 64 °C
Hydroxylzahl: 9 - 12
Mittlere Molmasse: 9000 - 12500
Identität (IR): entspricht

Sicherheitshinweise

• Lagerklassenschlüssel: 10 - Combustible liquids
• WGK: WGK 1
• Flammpunkt (°F): 281.5 °F - closed cup
• Flammpunkt (°C): 138.6 °C - closed cup