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15759

Sigma-Aldrich

Kolliphor® P 188

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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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This Item
K48947897350246
Kolliphor® P 188

Sigma-Aldrich

15759

Kolliphor® P 188

Kolliphor® P 188 solid

Sigma-Aldrich

K4894

Kolliphor® P 188

mol wt

~7680-9510 g/mol

mol wt

8.400 g/mol

mol wt

~7680-9510 g/mol

mol wt

~9840-14600 g/mol

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

impurities

-

impurities

organic volatile impurities, complies (meets USP requirements), ≤0.4% total ash, ≤0.75% water, ≤1 ppm ethylene oxide, ≤20 ppm heavy metals, ≤5 ppm 1,4-dioxane, ≤5 ppm propylene oxide, 50-125 ppm butylhydroxytoluene

impurities

≤0.25% ethylene glycol and diethylene glycol, ≤0.4% total ash, ≤0.75% water, ≤1 ppm ethylene oxide, ≤2 ppm arsenic, ≤20 ppm heavy metals, 50-125 ppm butylhydroxytoluene

CMC

0.48 mM

CMC

-

CMC

-

CMC

-

transition temp

cloud point >100 °C

transition temp

-

transition temp

-

transition temp

-

HLB

>24

HLB

-

HLB

-

HLB

-

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 block copolymers.

Legal Information

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

Storage Class Code

11 - Combustible Solids

WGK

WGK 1

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable


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