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398039

Sigma-Aldrich

1,2-propanediol

ACS reagent, ≥99.5%

Synonyme(s) :

Propylène glycol

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About This Item

Formule linéaire :
CH3CH(OH)CH2OH
Numéro CAS:
57-55-6
Poids moléculaire :
76.09
Beilstein:
1340498
Numéro CE :
200-338-0
Numéro MDL:
MFCD00064272
Code UNSPSC :
12352100
ID de substance PubChem :
24864713
Nomenclature NACRES :
NA.21
Le tarif et la disponibilité ne sont pas disponibles actuellement.

Qualité

ACS reagent

Niveau de qualité

200

Densité de vapeur

2.62 (vs air)

Pression de vapeur

0.08 mmHg ( 20 °C)

Essai

≥99.5%

Forme

liquid

Température d'inflammation spontanée

779 °F

Limite d'explosivité

12.5 %

Impuretés

≤0.0005 meq/g Titr. acid
≤0.2% water

Résidus de calcination

≤0.005%

Couleur

APHA: ≤10

Indice de réfraction

n20/D 1.432 (lit.)

pb

187 °C (lit.)

Pf

−60 °C (lit.)

Densité

1.036 g/mL at 25 °C (lit.)

Traces d'anions

chloride (Cl-): ≤1 ppm

Groupe fonctionnel

hydroxyl

Chaîne SMILES 

CC(O)CO

InChI

1S/C3H8O2/c1-3(5)2-4/h3-5H,2H2,1H3

Clé InChI

DNIAPMSPPWPWGF-UHFFFAOYSA-N

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Description générale

1,2-Propanediol, a 1,2-alkanediol[1] is an industrially important chemical. Due to its increasing demand many green methods have been proposed for its synthesis mainly using the inexpensive glycerol as the starting material.[1][2][3][4][5][6] It is a raw material for the synthesis of intermediates, building blocks and polymers.[7]

Application

1,2-Propanediol may be used in the following processes:
  • Green synthesis of propylene carbonate.[8]
  • Production of lactic acid by green catalytic oxidation.[9][10]
  • Propanal generation by catalytic dehydration.[11]

Autres remarques

The article number 398039-4X2L will be discontinued. Please order the single bottle 398039-2L which is physically identical with the same exact specifications.

Code de la classe de stockage

10 - Combustible liquids

Classe de danger pour l'eau (WGK)

WGK 1

Point d'éclair (°F)

219.2 °F - closed cup

Point d'éclair (°C)

104 °C - closed cup

Équipement de protection individuelle

Eyeshields, Gloves

Faites votre choix parmi les versions les plus récentes :

Certificats d'analyse (COA)

Lot/Batch Number
MKCW8232
WXBF1261V
WXBD8323V
WXBD8680V
WXBD9547V

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1,2-propanediol

Sustainability metrics for a fossil-and renewable-based route for 1, 2-propanediol production: A comparison.
Marinas A, et al.
Catalysis Today, 239, 31-37 (2015)
A novel Pd/C-catalyzed conversion of glucose to 1, 2-propanediol by water splitting with Zn.
Wang, J, et al.
Royal Society of Chemistry Advances, 5(63), 51435-51439 (2015)
Microwave assisted process intensification of lipase catalyzed transesterification of 1, 2 propanediol with dimethyl carbonate for the green synthesis of propylene carbonate: Novelties of kinetics and mechanism of consecutive reactions.
Yadav GD, et al.
Chemical Engineering Journal, 281, 199-208 (2015)
Reactive Extraction of 1, 3-Propanediol with Aldehydes in the Presence of a Hydrophobic Acidic Ionic Liquid as a Catalyst.
Matsumoto M, et al.
Solvent Extraction Research and Development, Japan, 22(2), 209-213 (2015)
Catalytic conversion of ethyl lactate to 1,2-propanediol over CuO.
Zhang S, et al.
Chinese Journal of Chemical Engineering (2015)
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Questions

1–4 of 4 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. What is the concentration of the stock bottle?

    1 answer

    1. This product is supplied as a neat or pure liquid with a literature density of 1.036 g/mL and a molecular weight of 76.09 g/mol. The minimum purity is 99.50 %, thus the molarity will vary slightly from lot to lot. The molarity can range from 13.5 M (99.50 %) to 13.6 M (100%).

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  4. Il propandiolo in soluzione al 30% favorisce o inibisce la crescita batterica in particolare di Pseudomonas aeruginosa? Grazie

    1 answer

    1. This product has not been tested for growth promotion or inhibition at any concentration. These properties would have to be determined by the end user. See the link below to a publication that may be helpful.
      https://biotechnologyforbiofuels.biomedcentral.com/articles/10.1186/s13068-021-02067-w

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