The polydispersity of this product is tested on a lot-to-lot basis and is listed on the Certificate of Analysis. For example, for lot number BCCH2568, the polydispersity is 1.32 as per the Certificate of Analysis:
https://www.sigmaaldrich.com/certificates/sapfs/PROD/sap/certificate_pdfs/COFA/Q14/71578-BULK-FBCCH2568.pdf
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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250 G
€149.00
1 KG
€230.00
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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Product Name
Poly(ethylene glycol) methyl ether, BioUltra, 500
SMILES string
O(CCO)C
InChI
1S/C3H8O2/c1-5-3-2-4/h4H,2-3H2,1H3
InChI key
XNWFRZJHXBZDAG-UHFFFAOYSA-N
vapor density
>1 (vs air)
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
Quality Level
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This Item | 202487 | 732621 | 202509 |
|---|---|---|---|
| form paste, viscous liquid (clear) | form semisolid | form chunks, powder or crystals | form flakes (or pellets) |
| functional group hydroxyl | functional group - | functional group - | functional group hydroxyl |
| Quality Level 100 | Quality Level 200 | Quality Level 100 | Quality Level 200 |
| mol wt 470-530 | mol wt average Mn 550 | mol wt average Mn 10,000 | mol wt average Mn ~2,000 |
| cation traces Al: ≤5 mg/kg, Ba: ≤5 mg/kg, Ca: ≤10 mg/kg, Co: ≤5 mg/kg, Cu: ≤5 mg/kg, K: ≤200 mg/kg, Mg: ≤5 mg/kg, Mo: ≤5 mg/kg, Ni: ≤5 mg/kg, Sr: ≤5 mg/kg, As: ≤0.1 mg/kg, Cd: ≤5 mg/kg, Fe: ≤5 mg/kg, Mn: ≤5 mg/kg, Pb: ≤5 mg/kg, Bi: ≤5 mg/kg, Li: ≤5 mg/kg, Zn: ≤5 mg/kg, Cr: ≤5 mg/kg | cation traces - | cation traces - | cation traces - |
| impurities insoluble matters, passes filter test, ≤0.005% peroxides (as H2O2) | impurities - | impurities - | impurities - |
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
Curcumin loaded polymeric micelles inhibit breast tumor growth and spontaneous pulmonary metastasis.
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
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
Yiyi Yu et al.
Journal of pharmaceutical sciences, 102(3), 1054-1062 (2013-01-03)
To promote the application of methoxy poly(ethylene glycol)-cholesterol (mPEG-Chol), mPEG-Chol was used to prepare core-shell micelles encapsulating poorly water-soluble docetaxel (DTX-PM) by modified cosolvent evaporation method. Approaches to enhance DTX entrapment efficiency (EE) and minimize particle size were investigated in
Lina Du et al.
Anti-cancer drugs, 24(2), 172-180 (2012-09-20)
A functionalized poly(amidoamine) (PAMAM) nanocarrier was designed and prepared to deliver anticancer drugs. The nanocarrier is a copolymer with a core-shell structure with 3.0 G PAMAM as the core and sequentially conjugated poly(2-(N,N-diethylamino)ethyl methacrylate) (pDEA) and methoxy-poly(ethylene glycol) 2000 (mPEG)
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what is the polydispersity of this mPEG?
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Is your product 71578 PEG MME 500 ?
1 answer-
Yes, this product is a PEG MME (poly(ethylene glycol) methyl ether) with a molecular weight of 500 (specified to be 470-530).
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