8.21881

Polyethylene glycol

10000, for synthesis

• Szinonimák: Poly(ethylene glycol), Polyethylene glycol 10000, Polyglycol, Polyethylene oxide, Polyoxy ethylene, PEG 10000, PEG
• Lineáris képlet: H(OCH₂CH₂)_nOH
• CAS-szám: 25322-68-3
• MDL-szám: MFCD00081839
• UNSPSC kód: 13111021
• EC index szám: 500-038-2
• NACRES: NA.22

Tulajdonságok

• gőznyomás: <0.01 hPa ( 20 °C)
• Minőségi szint: 200
• Forma: liquid
• öngyulladási hőmérséklet: 340 °C
• hatékonyság: 28000 mg/kg LD₅₀, oral (Rat); >20000 mg/kg LD₅₀, skin (Rabbit)
• pH: 5-7 (20 °C, 100 g/L in H₂O)
• Kinematikai viszkozitás: 500-900 cSt(20 °C)
• mp: 58-63 °C
• átmeneti hőmérséklet: flash point 265 °C
• sűrűség: 1.2 g/cm³ at 20 °C
• térfogatsúly: 400‑500 kg/m³
• tárolási hőmérséklet: no temp limit
• SMILES string: C(CO)O
• InChI: 1S/C2H6O2/c3-1-2-4/h3-4H,1-2H2
• Nemzetközi kémiai azonosító kulcs: LYCAIKOWRPUZTN-UHFFFAOYSA-N

Leírás

Általános leírás

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).

Alkalmazás

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.

Analízis megjegyzés

Melting range (lower value): ≥ 59 °C
Melting range (upper value): ≤ 64 °C
Hydroxyl value: 9 - 12
Average molecular mass: 9000 - 12500
Identity (IR): passes test

Biztonsági adatok

• Tárolási osztály kódja: 10 - Combustible liquids
• WGK: WGK 1
• Lobbanási pont (F): 281.5 °F - closed cup
• Lobbanási pont (C): 138.6 °C - closed cup