"Descrizione" by Al222 (19285 pt) | 2021-Dec-12 17:40 |
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Macrogol is a chemical compound, polyethylene glycol, PEG, or 1,2-glycol produced through the reaction of ethylene oxide with water, basically non-ionic polymer of ethylene oxide. Macrogol is the international common designation (ICD) used for PEG.
It occurs as a fine white powder or transparent colorless liquid.
As a polyether compound it is used:
It is relatively stable and non-toxic
Low molecular weight Macrogol compositions are used by the cosmetic and pharmaceutical industries:
Macrogol compositions commonly used by the primarily high molecular weight pharmaceutical industry are targeted for the treatment of constipation (1):
Macrogol 3350 and Macrogol 4000 in gastroenterology, have played an important role, while Macrogol of different molecular weights are used by the pharmaceutical industry as probes to measure mucosal permeability.
Macrogol is widely used in lipsticks, cosmetics, toothpastes with various functionalities: thickener, solvent, lubricant and in medicine inserted in intravenous injections, suppositories.
Although macrogol is generally considered biologically inert, cases of hypersensitivity have occurred (2).
Typical optimal characteristics of a commercial product
Appearance | Fine powder clear, colorless |
Boiling point | >250°C |
Melting point | 64-66 °C |
Refractive index | n20/D 1.469 |
Water solubility | H2O: 50 mg/mL |
Flash point | 270 °C |
Purity | 99% |
pH | 5-7 |
Hydroxyl Value: | 12-16mgKOH/g |
Loss on drying | ≤2.0% |
Shelf life | 2 years |
Where to buy Macrogol
Synonyms:
References____________________________________________________________________
(1) De Giorgio R, Cestari R, Corinaldesi R, Stanghellini V, Barbara G, Felicani C, Di Nardo G, Cucchiara S. Use of macrogol 4000 in chronic constipation. Eur Rev Med Pharmacol Sci. 2011 Aug;15(8):960-6.
Mínguez M, López Higueras A, Júdez J. Use of polyethylene glycol in functional constipation and fecal impaction. Rev Esp Enferm Dig. 2016 Dec;108(12):790-806. doi: 10.17235/reed.2016.4571/2016.
(2) Wenande E, Garvey LH. Immediate-type hypersensitivity to polyethylene glycols: a review. Clin Exp Allergy. 2016 Jul;46(7):907-22. doi: 10.1111/cea.12760.
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