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202304

Sigma-Aldrich

Poly(propylene glycol)

average Mn ~425

Sinónimos:

PPG, Poly(propylene oxide)

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About This Item

Fórmula lineal:
H[OCH(CH3)CH2]nOH
Número de CAS:
25322-69-4
MDL number:
MFCD00084446
UNSPSC Code:
12162002
PubChem Substance ID:
24852053
NACRES:
NA.23
vapor pressure:
<0.01 mmHg ( 20 °C)
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vapor density

>1 (vs air)

Quality Level

200

vapor pressure

<0.01 mmHg ( 20 °C)

mol wt

average Mn ~425

contains

130-190 ppm proprietary phenolic antioxidant

refractive index

n20/D 1.447

viscosity

80 cSt(25 °C)(lit.)

hydroxyl value

263 mg KOH/g

solubility

water: miscible (completely)

density

1.004 g/mL at 25 °C

SMILES string

CC(O)CO

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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Application

Poly(propylene glycol) can be used:
  • As a plasticizer as it does not crystalize, has a low glass transition temperature, and is biocompatible. For example, it can be used in the plasticization of polylactic acid.
  • To prepare the aqueous biphasic system for the recovery of ectoine from Halomonas salina cells.
  • To study the virtual transition from supramolecular polymer(PPG) toconventional polymer(PPO).

Storage Class

10 - Combustible liquids

wgk_germany

WGK 1

flash_point_f

445.0 °F - closed cup

flash_point_c

229.44 °C - closed cup

ppe

Eyeshields, Gloves

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Certificados de análisis (COA)

Lot/Batch Number
MKCV5089
MKCG2618
MKBZ3153V
01817PUV
SHBF4146V

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R De Lisi et al.
Physical chemistry chemical physics : PCCP, 13(27), 12571-12577 (2011-06-15)
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
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
Izzuddin Zaman et al.
Nanoscale, 4(15), 4578-4586 (2012-06-19)
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
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

1–2 of 2 Questions  

  1. 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

      Helpful?

  2. 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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