What are the properties of polyethylene glycol?

Characteristics of polyethylene glycol It is non-toxic, colorless, inert, odorless, and non-volatile. Also, it is incredibly soluble in water, and organic solvents such as benzene, carbon tetrachloride, and chloroform.

Is polyethylene glycol the same as polyethylene glycol 400?

PEG 400 (polyethylene glycol 400) is a low-molecular-weight grade of polyethylene glycol. It is a clear, colorless, viscous liquid. Due in part to its low toxicity, PEG 400 is widely used in a variety of pharmaceutical formulations.

What is the strength of polyethylene glycol?

The shear strength of PEG 600 at solidification temperature Ts is approximately 0.3 MPa. The tensile strength is zero at Ts but, like viscosity, can be described by a power-law model. For example, the tensile strength at 15°C and a strain-rate of 0.01 s-1 is 0.38 MPa (Soule and Cashman, 2000).

What does the number mean in polyethylene glycol?

average molecular weights
The numbers that are often included in the names of PEGs indicate their average molecular weights (e.g. a PEG with n = 9 would have an average molecular weight of approximately 400 daltons, and would be labeled PEG 400). Most PEGs include molecules with a distribution of molecular weights (i.e. they are polydisperse).

What does the number in PEG 400 or PEG 4000 indicate?

The number of each PEG (e.g. 10,000, 4000, 1000, 400, 200, etc) refers to the molecular weight and the monomer is H−O−CH2−CH2. When polymerized they are linked together–head to tail–and the chemical structure is: H−(O−CH2−CH2)n−OH. The “n” in the chemical formula represents the number of monomer units.

What is polyethylene glycol 400 made from?

Polyethylene glycol 400 (PEG400) is a clear, colorless liquid used in many industries and applications. Typically derived from petroleum, Acme-Hardesty offers a sustainable alternative manufactured from the byproducts of sugar cane processing.

What is the CAS number for polyethylene glycol 4000?

CAS No. 25322-68-3, EC Number 500-038-2. More>> Polyethylene glycol 4000 for synthesis. CAS No. 25322-68-3, EC Number 500-038-2. Less<< Polyethylene glycol 4000 MSDS (material safety data sheet) or SDS, CoA and CoQ, dossiers, brochures and other available documents.

What is the molecular weight of polyethylene glycol?

PEGs are prepared by polymerization of ethylene oxide and are commercially available over a wide range of molecular weights from 300 g/mol to 10,000,000 g/mol. PEG and PEO are liquids or low-melting solids, depending on their molecular weights.

What is the role of polyethylene glycol in biophysics?

In biophysics, polyethylene glycols are the molecules of choice for the functioning ion channels diameter studies, because in aqueous solutions they have a spherical shape and can block ion channel conductance. PEG is the basis of many skin creams (as cetomacrogol) and personal lubricants (frequently combined with glycerin ).

What are the different types of polyethylene glycol (PEG) polymer?

PEGs are also available with different geometries. Branched PEGs have three to ten PEG chains emanating from a central core group. Star PEGs have 10 to 100 PEG chains emanating from a central core group. Comb PEGs have multiple PEG chains normally grafted onto a polymer backbone.

Previous post Who starred in the 1984 version of A Christmas Carol?
Next post What kind of anime is Campione?