Home Categories Catalyst and Auxiliary Polyethylene glycol
A6641912

Polyethylene glycol , averageMn200 , 25322-68-3

Synonym(s):
PEG;PEO;Poly(ethylene glycol);0;0

CAS NO.:25322-68-3

Empirical Formula: N/A

Molecular Weight: 0

MDL number: MFCD00081839

EINECS: 500-038-2

Pack Size Price Stock Quantity
500G RMB36.80 In Stock
1kg RMB67.20 In Stock
5KG RMB319.20 In Stock
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Update time: 2022-07-08

PRODUCT Properties

Melting point: 64-66 °C
Boiling point: >250°C
Tg -67
Density  1.27 g/mL at 25 °C
vapor density  >1 (vs air)
vapor pressure  <0.01 mm Hg ( 20 °C)
refractive index  n20/D 1.469
Flash point: 270 °C
storage temp.  2-8°C
solubility  H2O: 50 mg/mL, clear, colorless
form  waxy solid
color  White to very pale yellow
Specific Gravity 1.128
PH 5.5-7.0 (25℃, 50mg/mL in H2O)
Water Solubility  Soluble in water.
Sensitive  Hygroscopic
λmax λ: 260 nm Amax: 0.6
λ: 280 nm Amax: 0.3
Merck  14,7568
Stability: Stable. Incompatible with strong oxidizing agents.
LogP -0.698 at 25℃

Description and Uses

Polyethylene glycols are a family of linear polymers formed by a base-catalyzed condensation reaction with repeating ethylene oxide units being added to ethylene. The molecular formula is (C2H4O)multH2O where mult denotes the average number of oxyethylene groups. The molecular weight can range from 200 to several million corresponding to the number of oxyethylene groups. The higher-molecular-weight materials (100 000 to 5 000 000) are also referred to as polyethylene oxides. The average molecular weight of any specific polyethylene glycol product falls within quite narrow limits (°5%). The number of ethylene oxide units or their approximate molecular weight (e.g., PEG-4 or PEG-200) commonly designates the nomenclature of specific polyethylene glycols. Polyethylene glycols with amolecular weight less than 600 are liquid, whereas those of molecular weight 1000 and above are solid. These materials are nonvolatile, water-soluble, tasteless, and odorless. They are miscible with water, alcohols, esters, ketones, aromatic solvents, and chlorinated hydrocarbons, but immiscible with alkanes, paraffins, waxes, and ethers.

Used in conjunction with carbon black to form a conductive composite.1 Polymer nanospheres of poly(ethylene glycol) were used for drug delivery.2

Safety

Symbol(GHS) 
GHS06,GHS08,GHS09
Signal word  Danger
Hazard statements  H302-H311-H373-H411
Precautionary statements  P273-P280-P301+P312+P330-P302+P352+P312-P391-P501
Hazard Codes  Xi,T
Risk Statements  36/38-52/53-33-23/24/25
Safety Statements  26-36-24/25-61-45-36/37
WGK Germany  3
RTECS  TQ4110000
3-9
Autoignition Temperature 581 °F
Hazard Note  Harmful
TSCA  Yes
HS Code  39072011
Toxicity LD50 orally in Rabbit: 28000 mg/kg LD50 dermal Rabbit > 20000 mg/kg

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