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15759

Sigma-Aldrich

Kolliphor® P 188

Synonym(s):
Poly(ethylene glycol)-block-poly(propylene glycol)-block-poly(ethylene glycol), Lutrol® F68, Poloxamer 188
CAS Number:
MDL number:
NACRES:
NA.25

form

solid

Quality Level

mol wt

~7680-9510 g/mol

composition

oxyethylene, 79.9-83.7%

impurities

≤0.25% ethylene glycol and diethylene glycol
≤0.4% total ash
≤1 ppm ethylene oxide
≤1.0% water
≤2 ppm arsenic traces
≤20 ppm heavy metals
≤5 ppm dioxan
≤5 ppm propylene oxide
50-150 ppm butylhydroxytoluene

ign. residue

≤0.30%

color

APHA: ≤120, 50/50 in CH3OH

pH

5.0-7.5 (100 g/L in H2O)
6.0-7.5 (25 g/L in H2O)

CMC

0.48 mM

transition temp

cloud point >100 °C

HLB

>24

InChI

1S/C3H6O.C2H4O/c1-3-2-4-3;1-2-3-1/h3H,2H2,1H3;1-2H2

InChI key

RVGRUAULSDPKGF-UHFFFAOYSA-N

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Packaging

1 kg

Biochem/physiol Actions

Kolliphor® P 188 is widely used as a thickening agent and gel binder.

Other Notes

The Kolliphor P grades are poloxamers from the extensive line of Pluronic block copolymers.
This research-grade product is intended for use in R&D and development only.

Legal Information

Kolliphor is a registered trademark of BASF
Lutrol is a registered trademark of BASF SE

Storage Class Code

13 - Non Combustible Solids

WGK

WGK 1

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Certificate of Analysis

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Certificate of Origin

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