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Merck

71578

Poly(ethylene glycol) methyl ether

BioUltra, 500

Synonym(s):

Polyethylene glycol, Methoxy poly(ethylene glycol), Polyethylene glycol monomethyl ether, mPEG

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About This Item

Linear Formula:
CH3(OCH2CH2)nOH
CAS Number:
UNSPSC Code:
12162002
PubChem Substance ID:
NACRES:
NA.26
MDL number:
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vapor density

>1 (vs air)

Quality Level

vapor pressure

0.05 mmHg ( 20 °C)

description

non-ionic

product line

BioUltra

form

paste, viscous liquid (clear)

mol wt

470-530

impurities

insoluble matters, passes filter test, ≤0.005% peroxides (as H2O2)

pH

5.5-7.0 (25 °C, 50 mg/mL in H2O)

mp

20 °C (lit.)

solubility

H2O: 50 mg/mL at 25 °C, clear, colorless

anion traces

chloride (Cl-): ≤50 mg/kg, sulfate (SO42-): ≤50 mg/kg

cation traces

Al: ≤5 mg/kg, As: ≤0.1 mg/kg, Ba: ≤5 mg/kg, Bi: ≤5 mg/kg, Ca: ≤10 mg/kg, Cd: ≤5 mg/kg, Co: ≤5 mg/kg, Cr: ≤5 mg/kg, Cu: ≤5 mg/kg, Fe: ≤5 mg/kg, K: ≤200 mg/kg, Li: ≤5 mg/kg, Mg: ≤5 mg/kg, Mn: ≤5 mg/kg, Mo: ≤5 mg/kg, Na: ≤200 mg/kg, Ni: ≤5 mg/kg, Pb: ≤5 mg/kg, Sr: ≤5 mg/kg, Zn: ≤5 mg/kg

λ

50 mg/mL in H2O

UV absorption

λ: 260 nm Amax: 0.06, λ: 280 nm Amax: 0.03

functional group

hydroxyl

SMILES string

O(CCO)C

InChI

1S/C3H8O2/c1-5-3-2-4/h4H,2-3H2,1H3

InChI key

XNWFRZJHXBZDAG-UHFFFAOYSA-N



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Storage Class

10 - Combustible liquids

wgk

WGK 1

flash_point_f

359.6 °F - closed cup

flash_point_c

182 °C - closed cup

ppe

Eyeshields, Gloves



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Jiani Zheng et al.
Langmuir : the ACS journal of surfaces and colloids, 28(37), 13261-13273 (2012-08-28)
Alginate/chitosan/alginate (ACA) hydrogel microcapsules were modified with methoxy poly(ethylene glycol) (MPEG) to improve protein repellency and biocompatibility. Increased MPEG surface graft density (n(S)) on hydrogel microcapsules was achieved by controlling the grafting parameters including the buffer layer substrate, membrane thickness
Yi Wei et al.
Langmuir : the ACS journal of surfaces and colloids, 28(39), 13984-13992 (2012-09-04)
The microcosmic mechanisms of protein (recombinant human growth hormone, rhGH) incomplete release and stability from amphiphilic poly(monomethoxypolyethylene glycol-co-D,L-lactide) (mPEG-PLA, PELA) microspheres were investigated. PELA with different hydrophilicities (PELA-1, PELA-2, and PELA-3) based on various ratios of mPEG to PLA were
Lei Liu et al.
International journal of pharmaceutics, 443(1-2), 175-182 (2013-01-05)
This work aims to develop curcumin (Cur) loaded biodegradable self-assembled polymeric micelles (Cur-M) to overcome poor water solubility of Cur and to meet the requirement of intravenous administration. Cur-M were prepared by solid dispersion method, which was simple and easy