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Key Documents

81380

Sigma-Aldrich

Polypropylene glycol

P 2,000

Synonym(s):

PPG

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About This Item

CAS Number:
MDL number:
UNSPSC Code:
12162002
PubChem Substance ID:
NACRES:
NA.23

Quality Level

form

liquid

mol wt

Mn 1513

refractive index

n20/D 1.451

viscosity

~450 mPa.s(20 °C)

solubility

water: miscible (completely)

density

1.00 g/mL at 20 °C

SMILES string

O(C(CO)C)CC(O)C

InChI

1S/C6H14O3/c1-5(8)4-9-6(2)3-7/h5-8H,3-4H2,1-2H3

InChI key

DUFKCOQISQKSAV-UHFFFAOYSA-N

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General description

Polypropylene glycol is an addition polymer of propylene glycol and water. It is represented by the formula HO(C3H6O)nC3H6OH in which n represents the average number of oxypropylene groups. Polypropylene glycol is soluble in water and in certain organic solvents as aliphatic ketones and alcohols and insoluble in ether and in most aliphatic hydrocarbons.

Application

Polypropylene glycol (PPG)is widely used as an antifoaming agent. For example, it can be used to controlfoam in the production of Bacillus thuringiensis-based biopesticides fromsewage sludge.

It can be used in thepreparation of polyurethane(PU) elastomers. For example, it can be used tosynthesize PU elastomers with good acoustic absorption properties.

PPG-2000 can be used as a soft segment in the preparationof PU-based self-healing polymeric networks. These networks find application in the field of soft electronics.

Features and Benefits

  • Long and flexible alkyl groups promotechain mobility, which facilitates rapid self-healing.
  • The methyl groups present on the sides of thepolymer improve emulsification in water.

Storage Class Code

10 - Combustible liquids

WGK

WGK 1

Flash Point(F)

445.0 °F - closed cup

Flash Point(C)

229.44 °C - closed cup

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

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