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8.07483

Sigma-Aldrich

Poli(etilenglicol)

200, for synthesis

Sinónimos:

PEG

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About This Item

Fórmula lineal:
H(OCH2CH2)nOH
Número de CAS:
25322-68-3
MDL number:
MFCD00081839
UNSPSC Code:
13111021
EC Index Number:
500-038-2
NACRES:
NA.22
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vapor pressure

<0.01 hPa ( 20 °C)

Quality Level

200

form

liquid

autoignition temp.

350 °C (DIN 51794)

potency

28000 mg/kg LD50, oral (Rat)
>20000 mg/kg LD50, skin (Rabbit)

pH

5-7 (20 °C, 100 g/L in H2O)

bp

>150 °C

mp

-50 °C

transition temp

flash point 180 °C

solubility

soluble 70 g/L

density

1.124 g/cm3 at 20 °C

storage temp.

no temp limit

SMILES string

C(CO)O

InChI

1S/C2H6O2/c3-1-2-4/h3-4H,1-2H2

InChI key

LYCAIKOWRPUZTN-UHFFFAOYSA-N

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Application

Polyethylene glycol 200 can be used as:
  • A structure-directing agent to synthesize iron vanadate (FeVO4) nanoparticles via co-precipitation method.[1]
  • An organic additive to prepare crystalline nanorods of calcium tungstate (CaWO4) using calcium chloride and sodium tungstate via solvothermal process.[2]
  • A surface modifier in the synthesis of calcium peroxide nanoparticles using CaCl2 as a precursor via hydrolysis-precipitation method.[3]
  • A green solvent in combination with H2O in the preparation of 4-sulfanylcoumarins by sulfanylation of 4-tosyloxycoumarins with thiourea and alkyl halides.[4]

Analysis Note

Density (d 20 °C/ 4 °C): 1.124 - 1.126
Hydroxyl value: 535 - 590
Average molecular mass: 190 - 210
Identity (IR): passes test

Storage Class

10 - Combustible liquids

wgk_germany

WGK 1

flash_point_f

281.5 °F - closed cup

flash_point_c

138.6 °C - closed cup

Certificados de análisis (COA)

Busque Certificados de análisis (COA) introduciendo el número de lote del producto. Los números de lote se encuentran en la etiqueta del producto después de las palabras «Lot» o «Batch»

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Visite la Librería de documentos

Synthesis and characterization of FeVO4 nanoparticles
Nithya VD, et al.
Materials Research Bulletin, 46(10), 1654-1658 (2011)
Synthesis of 4-Sulfanylcoumarins Using Thiourea and Alkyl Halides as the Sulfanylation Agent in Polyethylene Glycol-Water
Yin Zhenlan, et al.
Synthesis, 45(06), 759-766 (2013)
J Khodaveisi et al.
Journal of hazardous materials, 192(3), 1437-1440 (2011-08-09)
Chemical oxidation is one of the many different methods of site remediation that has emerged lately as an alternative method to traditional techniques. According to this research calcium peroxide is suitable choice for contaminant biodegradation in soil and ground water
Solvothermal synthesis and characterization of crystalline CaWO4 nanoparticles
Chen S-J, et al.
Journal of Crystal Growth, 253(1-4), 361-365 (2003)

Questions

1–5 of 5 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

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  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

      Helpful?

  3. IS YOUR PEG 200 USP PHARMACEUTICAL GRADE?

    1 answer

    1. This item is intended for research use only and is not suitable for pharmaceutical manufacturing. Please see the following links below to review products that are pharmaceutical grade options:
      https://www.sigmaaldrich.com/product/mm/817001
      https://www.sigmaaldrich.com/product/mm/817005
      https://www.sigmaaldrich.com/product/mm/817019
      https://www.sigmaaldrich.com/product/mm/817045

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  4. What is the concentration of this product?

    1 answer

    1. This product is a neat liquid considered to be a 100% concentration.

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  5. What is the concentration of this product?

    1 answer

    1. This product a neat liquid considered to be a 100% concentration.

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