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E34102

Sigma-Aldrich

(−)-Ethyl L-lactate

98%

Sinonimo/i:

(−)-Ethyl (S)-2-hydroxypropionate, (S)-(−)-2-Hydroxypropionic acid ethyl ester, L-Lactic acid ethyl ester

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5 G
CHF 29.30
100 G
CHF 42.40
500 G
CHF 75.70
2.5 KG
CHF 161.00

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5 G
CHF 29.30
100 G
CHF 42.40
500 G
CHF 75.70
2.5 KG
CHF 161.00

About This Item

Formula empirica (notazione di Hill):
C5H10O3
Numero CAS:
Peso molecolare:
118.13
Beilstein:
1720839
Numero CE:
Numero MDL:
Codice UNSPSC:
12352108
ID PubChem:
NACRES:
NA.22

CHF 29.30


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Densità del vapore

4.1 (vs air)

Livello qualitativo

Tensione di vapore

2 mmHg ( 20 °C)
5 mmHg ( 30 °C)

Saggio

98%

Stato

liquid

Attività ottica

[α]14/D −10°, neat

Temp. autoaccensione

752 °F

Limite di esplosione

1.5 %, 100 °F

Indice di rifrazione

n20/D 1.4130 (lit.)

pH

4 (20 °C, 50 g/L)

P. ebollizione

154 °C (lit.)

Punto di fusione

−26 °C (lit.)

Densità

1.034 g/mL at 20 °C (lit.)
1.042 g/mL at 25 °C

Stringa SMILE

C[C@H](O)C(OCC)=O

InChI

1S/C5H10O3/c1-3-8-5(7)4(2)6/h4,6H,3H2,1-2H3/t4-/m0/s1
LZCLXQDLBQLTDK-BYPYZUCNSA-N

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Descrizione generale

Ethyl lactate is an economically viable green solvent used in organic synthesis. It is generally employed in organic reactions like multi-component reactions, cycloaddition reaction, asymmetric induction, photochemical synthesis, and ligand-free coupling reactions, etc.[1][2]

Applicazioni

(−)-Ethyl L-lactate can be used in the preparation of:
  • (R)-(+)-2-methyloxirane.[3]
  • (S)-2-((tert-Butyldimethylsilyl)oxy)propanal, a key intermediate for the synthesis of maltepolides.[4]

Avvertenze

Danger

Indicazioni di pericolo

Classi di pericolo

Eye Dam. 1 - Flam. Liq. 3 - STOT SE 3

Organi bersaglio

Respiratory system

Codice della classe di stoccaggio

3 - Flammable liquids

Classe di pericolosità dell'acqua (WGK)

WGK 1

Punto d’infiammabilità (°F)

128.8 °F - closed cup

Punto d’infiammabilità (°C)

53.8 °C - closed cup

Dispositivi di protezione individuale

Eyeshields, Faceshields, Gloves, type ABEK (EN14387) respirator filter


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Certificati d'analisi (COA)

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Odorant binding proteins (Obps) are expressed at extremely high levels in the antennae of insects, and have long been believed essential for carrying hydrophobic odorants to odor receptors. Previously we found that when one functional type of olfactory sensillum in
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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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