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438189

Sigma-Aldrich

Poly(ethylene glycol-ran-propylene glycol) monobutyl ether

average Mn ~3,900

Synonym(s):

Butoxy polyoxyethylene oxypropylene glycol

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About This Item

Linear Formula:
CH3(CH2)3(OCH2CH2)x[OCH2CH(CH3)]yOH
CAS Number:
9038-95-3
MDL number:
MFCD00198079
UNSPSC Code:
12162002
PubChem Substance ID:
24867431
NACRES:
NA.23

form

viscous liquid

Quality Level

200

mol wt

average Mn ~3,900

refractive index

n20/D 1.46

viscosity

3,600 cSt(20 °C)(lit.)

bp

>200 °C (lit.)

transition temp

pour point −27 °C

solubility

H2O: soluble at <40 °C

density

1.056 g/mL at 25 °C

SMILES string

OCCO.CCCCO.CC(O)CO

InChI

1S/C4H10O.C3H8O2.C2H6O2/c1-2-3-4-5;1-3(5)2-4;3-1-2-4/h5H,2-4H2,1H3;3-5H,2H2,1H3;3-4H,1-2H2

InChI key

QMNOIORHZMRPLS-UHFFFAOYSA-N

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Application

Hydraulic fluids, metal working fluids and lubricants, heat transfer fluids, solder assist fluids, quenchants, lubricants, solvents, plasticizers and foam control agents.

Features and Benefits

Good lubricity under load, noncorrosive to metals. Very low ash content, low pour point, excellent thermal stability.

Storage Class Code

10 - Combustible liquids

WGK

WGK 1

Flash Point(F)

235.4 °F - closed cup

Flash Point(C)

113 °C - closed cup

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Certificates of Analysis (COA)

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An extractive fermentation technique was developed using a thermoseparating reagent to form a two-phase system for simultaneous cell cultivation and downstream processing of extracellular Burkholderia cepacia lipase. A 10% (w/w) solution of ethylene oxide-propylene oxide (EOPO) with a molecular mass
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