8.18892

Polyethylene glycol

35000, (stabilised with 2-tert-butyl-4-methoxyphenol) for synthesis

• Synonym(s): Poly(ethylene glycol), Polyethylene glycol 35000, Polyglycol, Polyethylene oxide, Polyoxy ethylene, PEG 35000, 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: <0.01 hPa ( 20 °C)
• Quality Level: 200
• form: liquid
• autoignition temp.: >320 °C
• potency: 28000 mg/kg LD₅₀, oral (Rat); >20000 mg/kg LD₅₀, skin (Rabbit)
• pH: 5-7 (20 °C, 100 g/L in H₂O)
• mp: 60-65 °C
• transition temp: flash point 260 °C
• solubility: 500 g/L
• density: 1.2 g/cm³ at 20 °C
• bulk density: 400‑500 kg/m³
• storage temp.: 2-30°C
• 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 35000 (PEG 35000) is a hydrophilic polyether compound that can be used to synthesize:

• Hierarchically structured silica monoliths for the fabrication of micro-bioreactors.
• Micro-nanostructured PEG-DA (PEG-diacrylates) hydrogels for biomedical applications.

It can also be used as:

• A template to prepare micro/mesoporous structure of silica by sol-gel process.
• A stabilizing agent in the synthesis of metal nanoparticles.

Analysis Note

Hydroxyl value: 3 - 4
Melting range (lower value): ≥ 62 °C
Melting range (upper value): ≤ 67 °C
Average molecular mass: 28000 - 38000
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