8.21037

Polyethylene glycol

2000, for synthesis

• Synonym(s): Poly(ethylene glycol), Polyethylene glycol 2000, Polyglycol, Polyethylene oxide, Polyoxy ethylene, PEG 2000, PEG
• Linear Formula: H(OCH₂CH₂)_nOH
• CAS Number: 25322-68-3
• MDL number: MFCD00081839
• UNSPSC Code: 13111021
• EC Index Number: 500-038-2
• NACRES: NA.22

Properties

• vapor pressure: <0.1 hPa
• Quality Level: 200
• form: flakes
• autoignition temp.: 420 °C
• potency: 28000 mg/kg LD₅₀, oral (Rat); >20000 mg/kg LD₅₀, skin (Rabbit)
• pH: 4-7 (20 °C, 100 g/L in H₂O)
• kinematic viscosity: 46-55 cSt(20 °C) (50% solution)
• mp: 49-52 °C
• transition temp: flash point 250 °C
• solubility: 600 g/L
• density: 1.21 g/cm³ at 20 °C
• bulk density: 400‑500 kg/m³
• storage temp.: no temp limit
• SMILES string: C(CO)O
• InChI: 1S/C2H6O2/c3-1-2-4/h3-4H,1-2H2
• InChI key: LYCAIKOWRPUZTN-UHFFFAOYSA-N

Description

Application

Polyethylene glycol 2000 is a hydrophilic linear polymer that can be used as:

• An organic additive in the synthesis of metal nanoparticles to control the size and morphology of nanostructure.
• A carbon source to prepare acidophilic highly fluorescent carbon dots (CDs) via the one-pot hydrothermal method.
• A dispersion stabilizer to synthesize amorphous Fe₂O₃ nanoparticles by microwave irradiation method. During the synthesis, PEG-2000 inhibits nonhomogeneous precipitation to obtain homogeneous precipitation of the metal nanoparticles.

Analysis Note

Hydroxyl value: 51 - 63
Melting range (lower value): ≥ 50 °C
Melting range (upper value): ≤ 55 °C
Average molecular mass: 1900 - 2200
Identity (IR): passes test

Safety Information

• Storage Class: 10 - Combustible liquids
• wgk_germany: WGK 1
• flash_point_f: 281.5 °F - closed cup
• flash_point_c: 138.6 °C - closed cup