SKU: 35888917583

Polyethylene glycol (PEG-400), 50ml

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Description

Polyethylene glycol (PEG-400), 50mlPolyethyleenglycol, afgekort als PEG, is een hydrofiel polymeer of oligomeer waarvan de ketens zijn opgebouwd uit monomeereenheden met de formule ( CH2 CH2 O ), met aan elk uiteinde een hydroxylgroep ( OH). Chemisch gezien is PEG een polyether van etheenglycol. De productie gebeurt echter door de polymerisatie van ethyleenoxide in aanwezigheid van water, ethyleenglycol, di of tri ethyleenglycol. Het wordt in de farmacie ook wel macrogol genoemd.

Polyethyleenglycol, afgekort als PEG, is een hydrofiel polymeer of oligomeer waarvan de ketens zijn opgebouwd uit monomeereenheden met de formule (-CH2-CH2-O-), met aan elk uiteinde een hydroxylgroep (-OH). Chemisch gezien is PEG een polyether van etheenglycol. De productie gebeurt echter door de polymerisatie van ethyleenoxide in aanwezigheid van water, ethyleenglycol, di- of tri-ethyleenglycol. Het wordt in de farmacie ook wel macrogol genoemd. Achter de naam wordt meestal de gemiddelde molecuulmassa genoemd, bijvoorbeeld Macrogol 400.

PEG bestaat in verschillende ketenlengtes: de korte ketens (enkele honderden monomeren aan elkaar) zijn bij kamertemperatuur vloeibaar, de langere ketens (tot tienduizend monomeren) zijn bij kamertemperatuur vast. Polyethyleenglycolen met lange ketens en hoge molecuulmassa’s (meer dan 35.000) noemt men ook polyethyleenoxide, omdat in die producten de rol van de hydroxylgroepen verwaarloosbaar is.

PEG is een chemisch weinig reactieve, niet gevaarlijke stof met vele toepassingen in de medische, farmaceutische, cosmetische en andere industriële sectoren, in de celbiologie en archeologie.

Technische productinformatie:
Molaire massa (M) 380-420 g/mol
Dichtheid (D) 1.116 g/cm³
Kookpunt (bp) 205,7 °C
Vlampunt (flp) 138,6 °C
Smeltpunt (mp) <-14,08 ° C
WGK 1
CAS-nr. [25322-68-3]
EG-Nr. 500-038-2

 

Garantie analyse
Uiterlijk (20 °C) vloeibaar, helder
Identiteit
Gemiddelde molaire massa 380-420 g/mol
Uiterlijk van de oplossing (25 % in H 2 O) voldoet aan
Hydroxylwaarde 267-295 mg KOH/g
pH-waarde (10 % in H 2 O) 4,5-7,0
Water ≤1,0 %
Viscositeit (20 °C) 105-130 mPa·s
Zware metalen (als Pb) ≤0,0005 %
Ethyleen en diethyleenglycol ≤0,25 %
Gesulfateerde as ≤0,1 %
Dioxaan ≤0,001 %
Ethyleenoxide ≤0,0001 %
Formaldehyde ≤0,003 %
Zuur/alkalisch rea. stoffen (0,1 M NaOH/5 g) voldoet aan
Reducerende stoffen voldoet aan

 

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SKU: 35888917583

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Dulcinea Allen
New York, US
★★★★★ 5
Very happy!
Size: 41.3 x 27.5, Color: Grey
Buy this bed! My fur son is a destroyer. Toys, balls, beds. Nothing is safe. Knock on wood, this bed has held up to his destructive behavior. And it’s so fluffy! It is big enough that I don’t think it’s going to fit in my washer. I will have to take it to the laundry mat to wash it eventually. At that point I will update on true durability. But all in all I find it to be a quality purchase.
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jim
Whiting, US
★★★★★ 5
Doo
Size: 35.4 x 23.6, Color: Grey
This dog bed is super fluffy. The cat loves it also. Size was perfect for my med dog she weighs 49lb. We have had it for month or so and both the dog and cat use it over there old bed. It has remained super fluffy. Worth the bang for the buck!
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Reviewed in the United States on May 13, 2026
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ColleenRN
Whiting, US
★★★★★ 5
Great price! Great Paper towel!
Package Size Name: XXL, Size: 150 sheet (Pack of 2)
These Amazon brand paper towels are great! They are the multi tear size, which is perfect for different uses. The price is good and they clean windows and glass wonderfully. Softness is so so, but if you don’t have an issue with that, then these are a great buy! I definitely recommend!
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Reviewed in the United States on May 23, 2026
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HD813
Birmingham, US
★★★★★ 5
Strong, absorbent and a good price!
Package Size Name: XXL, Size: 150 sheet (Pack of 12)
These are good paper towels. Not thin at all. Strong, absorbent and capable of cleaning as well as the 'name' brand paper towels but at a much better price. I'm happy with them.
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Kat B
Massapequa, US
★★★★★ 5
Works well
Package Size Name: XXL, Size: 150 sheet (Pack of 12)
There is nothing special about this product but it works fine. The only thing is that the paper towels are rough and thin, rather than a thick and soft. They fit perfectly on our paper towel rack so that’s nice. I recommend this product if you don’t care how your paper towels feel.
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Reviewed in the United States on April 28, 2026

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