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81380

Sigma-Aldrich

Polypropylene glycol

Polypropylene glycol

P 2,000

Synonym(s):

PPG

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About This Item

CAS Number:
25322-69-4
MDL number:
MFCD00084446
UNSPSC Code:
12162002
PubChem Substance ID:
24887761
NACRES:
NA.23
Pricing and availability is not currently available.

Quality Level

200

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

Choose from one of the most recent versions:

Certificates of Analysis (COA)

Lot/Batch Number
BCCM5746
BCCK6778
BCCH4979
BCCJ7828
BCCG9746

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The study highlighted the main forces driving the formation of hydroxypropyl-cyclodextrins (HP-CDs) + poly(propylene) glycol 725 g mol(-1) inclusion complexes. The temperature parameter was chosen as the variable to modulate the hydrophobicity of the polymer, and consequently ITC experiments as
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In spite of extensive studies conducted on carbon nanotubes and silicate layers for their polymer-based nanocomposites, the rise of graphene now provides a more promising candidate due to its exceptionally high mechanical performance and electrical and thermal conductivities. The present
L Hong et al.
Physical review. E, Statistical, nonlinear, and soft matter physics, 83(6 Pt 1), 061508-061508 (2011-07-30)
There are various arguments and models connecting the characteristic length associated with the boson peak vibrations ξ to the length scale of dynamical heterogeneity L(het). ξ is usually defined as the ratio of the transverse sound velocity to the boson
F Palazzi et al.
International endodontic journal, 45(2), 129-135 (2011-09-13)
To investigate the surface tension characteristics of 5.25% sodium hypochlorite and three recently introduced sodium hypochlorite solutions, which had been modified to reduce their surface tension: Chlor-Xtra, Hypoclean A and Hypoclean B. Freshly produced MilliQ water was used as a
Mohammed Taghi Zafarani-Moattar et al.
Biotechnology progress, 28(1), 146-156 (2011-09-29)
In this work, we proposed a novel aqueous biphasic system (ABS) composed of polypropylene glycol P400 (PPG P400) and hydrophilic ionic liquids (IL), 1-alkyl-3-methylimidazolium bromide (alkyl = ethyl or butyl), forming an upper polymer-rich phase and a lower IL-rich phase
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Questions

1–5 of 5 Questions  

  1. How is shipping temperature determined? And how is it related to the product storage temperature?

    1 answer

    1. Products may be shipped at a different temperature than the recommended long-term storage temperature. If the product quality is sensitive to short-term exposure to conditions other than the recommended long-term storage, it will be shipped on wet or dry-ice. If the product quality is NOT affected by short-term exposure to conditions other than the recommended long-term storage, it will be shipped at ambient temperature. As shipping routes are configured for minimum transit times, shipping at ambient temperature helps control shipping costs for our customers. For more information, please refer to the Storage and Transport Conditions document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/316/622/storage-transport-conditions-mk.pdf

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  2. How can I determine the shelf life / expiration / retest date of this product?

    1 answer

    1. If this product has an expiration or retest date, it will be shown on the Certificate of Analysis (COA, CofA). If there is no retest or expiration date listed on the product's COA, we do not have suitable stability data to determine a shelf life. For these products, the only date on the COA will be the release date; a retest, expiration, or use-by-date will not be displayed.
      For all products, we recommend handling per defined conditions as printed in our product literature and website product descriptions. We recommend that products should be routinely inspected by customers to ensure they perform as expected.
      For products without retest or expiration dates, our standard warranty of 1 year from the date of shipment is applicable.
      For more information, please refer to the Product Dating Information document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/449/386/product-dating-information-mk.pdf

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  3. Is the item monodispersed Polypropylene glycol?

    1 answer

    1. This product is tested for Mn and Mw. The polydispersity index (PDI) can be calculated by dividing Mw by Mn. A value of 1 would indicate a monodisperse polymer. For a recent lot (sample COA: https://www.sigmaaldrich.com/certificates/sapfs/PROD/sap/certificate_pdfs/COFA/Q14/81380-BULKBCCK6778.pdf), the Mw was tested to be 3116 and the Mw was tested to be 3009, equating to a PDI of 1.04, which is very close to being considered monodisperse. The Mw and Mn values do not have specifications associated with them but, historically, they tend to be similar to each other for this polymer.

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  4. Can this be autoclaved? If not, what is the recommend method to sterilize it?

    1 answer

    1. Yes, this product is autoclavable.

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  5. How much water is in this product?

    1 answer

    1. The specification for water content is ≤ 0.1 %. The exact amount will be listed on the lot-specific Certificate of Analysis. Please see the sample Certificate of Analysis: https://www.sigmaaldrich.com/certificates/sapfs/PROD/sap/certificate_pdfs/COFA/Q14/81380-BULKBCCH4979.pdf.

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    • Reviews 3
    • Vote 1
    4 out of 5 stars.

    High quality product + Leatime

    Users are satisfied about the quality and the product. However the leadtime is long and irregular.

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