ChemicalBook > CAS DataBase List > Methoxypolyethylene glycols

Methoxypolyethylene glycols

Product Name
Methoxypolyethylene glycols
CAS No.
9004-74-4
Chemical Name
Methoxypolyethylene glycols
Synonyms
MPEG;MPEG-OH;METHOXYPOLYETHYLENE GLYCOL;MEO-PEG-OH;POLYETHYLENE GLYCOL MONOMETHYL ETHER;MEO-PEG-COOH;POLYETHYLENE GLYCOL MONOMETHYL ETHER 550;MPEG 500;MPEG 2000;MPEG 5000
CBNumber
CB6228002
Molecular Formula
C5H12O3
Formula Weight
120.14698
MOL File
9004-74-4.mol
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Methoxypolyethylene glycols Property

Melting point:
60-64 °C
Boiling point:
>200°C/760mmHg
Density 
1.094 g/mL at 25 °C
vapor density 
>1 (vs air)
vapor pressure 
0.05 mm Hg ( 20 °C)
refractive index 
n20/D 1.459
Flash point:
268 °C
storage temp. 
-20°C
solubility 
H2O: 50 mg/mL at 25 °C, clear, colorless
form 
semisolid
color 
White to pale yellow
Specific Gravity
1.094
PH
5.5-7.0 (25℃, 50mg/mL in H2O)
Water Solubility 
Slightly miscible with water.
λmax
λ: 260 nm Amax: 0.06
λ: 280 nm Amax: 0.03
Stability:
Stable. Incompatible with strong oxidizing agents, strong acids, strong bases.
InChIKey
XNWFRZJHXBZDAG-UHFFFAOYSA-N
LogP
-0.800 (est)
EPA Substance Registry System
Poly(oxy-1,2-ethanediyl), .alpha.-methyl-.omega.-hydroxy- (9004-74-4)
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Safety

Safety Statements 
24/25-22
WGK Germany 
3
RTECS 
PE8271000
F 
3
TSCA 
Yes
HS Code 
29091990
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Hazard and Precautionary Statements (GHS)

Symbol(GHS)
Signal word
Danger
Hazard statements

H302Harmful if swallowed

H319Causes serious eye irritation

H335May cause respiratory irritation

H336May cause drowsiness or dizziness

H372Causes damage to organs through prolonged or repeated exposure

Precautionary statements

P260Do not breathe dust/fume/gas/mist/vapours/spray.

P261Avoid breathing dust/fume/gas/mist/vapours/spray.

P264Wash hands thoroughly after handling.

P264Wash skin thouroughly after handling.

P270Do not eat, drink or smoke when using this product.

P271Use only outdoors or in a well-ventilated area.

P280Wear protective gloves/protective clothing/eye protection/face protection.

P301+P312IF SWALLOWED: call a POISON CENTER or doctor/physician IF you feel unwell.

P304+P340IF INHALED: Remove victim to fresh air and Keep at rest in a position comfortable for breathing.

P305+P351+P338IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.

P312Call a POISON CENTER or doctor/physician if you feel unwell.

P314Get medical advice/attention if you feel unwell.

P330Rinse mouth.

P403+P233Store in a well-ventilated place. Keep container tightly closed.

P405Store locked up.

P501Dispose of contents/container to..…

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N-Bromosuccinimide Price

Sigma-Aldrich
Product number
71578
Product name
Poly(ethylene glycol) methyl ether
Purity
BioUltra, 500
Packaging
250g
Price
$152
Updated
2024/03/01
Sigma-Aldrich
Product number
71578
Product name
Poly(ethylene glycol) methyl ether
Purity
BioUltra, 500
Packaging
1kg
Price
$233
Updated
2024/03/01
Sigma-Aldrich
Product number
202487
Product name
Poly(ethylene glycol) methyl ether
Purity
average Mn 550
Packaging
5g
Price
$53.4
Updated
2024/03/01
Sigma-Aldrich
Product number
202487
Product name
Poly(ethylene glycol) methyl ether
Purity
average Mn 550
Packaging
250g
Price
$95.2
Updated
2024/03/01
TCI Chemical
Product number
P2183
Product name
Polyethylene Glycol Monomethyl Ether 400
Packaging
100g
Price
$26
Updated
2024/03/01
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Methoxypolyethylene glycols Chemical Properties,Usage,Production

Description

m-PEG36-alcohol is a PEG linker containing a hydroxyl group. The hydroxyl group enables further derivatization or replacement with other reactive functional groups. The hydrophilic PEG spacer increases solubility in aqueous media.

Chemical Properties

varies from viscous liquid to white flakes, depending

Uses

enteric coating controlled release and enteric release coatings

Uses

Methoxypolyethylene glycol 350 has been used in a study to assess the synthesis of a new class of thermosensitive micellar cyclotriphosphazenes. It has also been used in a study to investigate synthesis of a new amphiphilic poly(organophosphazene) by stepwise nucleophilic substitution.

Uses

Methoxypolyethylene Glycol of with an average molecular mass of 350. Methoxypolyethylene Glycol (MPEG) is used in various applications such as micelles for drug delivery as well as in modifications of therapeutic proteins to improve their pharmacokinetics.

Definition

ChEBI: A poly(ethylene glycol) terminated with a methyl group at one end.

brand name

Carbowax Sentry Methoxypolyethylene Glycol (Union Carbide).

General Description

It is a Polyethylene glycol (PEG) macromer with a reactive chain end consisting of methyl ether. Etherification of the PEG chain ends can be undertaken in basic conditions by reacting it with alkyl halides. mPEG can undergo cross linking to form hydrogels; polymerization can be initiated by redox reaction or free radical initiator.

Methoxypolyethylene glycols Preparation Products And Raw materials

Raw materials

Preparation Products

Benzonatate
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Methoxypolyethylene glycols Suppliers

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View Lastest Price from Methoxypolyethylene glycols manufacturers

Henan Fengda Chemical Co., Ltd
Product
Methoxypolyethylene glycols 9004-74-4
Price
US $8.00-0.80/KG
Min. Order
1KG
Purity
99%
Supply Ability
g-kg-tons, free sample is available
Release date
2024-04-09
Xian confluore Biological Technology Co., Ltd.
Product
m-PEG24-alcohol 9004-74-4
Price
US $0.00/g
Min. Order
1g
Purity
>95.00%
Supply Ability
1g
Release date
2024-03-27
Xian confluore Biological Technology Co., Ltd.
Product
m-PEG36-alcohol 9004-74-4
Price
US $0.00/g
Min. Order
1g
Purity
>95.00%
Supply Ability
1g
Release date
2024-03-27

9004-74-4, Methoxypolyethylene glycolsRelated Search:

ETHYLENE OXIDE Ethylene carbonate Diethylene glycol monomethyl ether Ethylene glycol diacetate Ethylene glycol Polyethylene glycol dimethyl ether ETHYLENE DIACRYLATE TRIETHYLENE GLYCOL MONOMETHYL ETHER 2-Methoxyethanol Triethylene glycol dimethyl ether 1,2-Dimethoxyethane 1,2-Dibromoethane C8E3 ETHYLENE POLY(ETHYLENE GLYCOL) METHYL ETHER METHACRYLATE Polyethylene Glycol O-Phenylphenoxyethyl Acrylate PROPYLENE GLYCOL

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