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319902

Sigma-Aldrich

Acetato de etilo

Ethyl acetate

ACS reagent, ≥99.5%

Sinónimos:

EtOAc

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About This Item

Fórmula lineal:
CH3COOC2H5
Número de CAS:
141-78-6
Peso molecular:
88.11
Beilstein:
506104
Número CE:
205-500-4
Número MDL:
MFCD00009171
Código UNSPSC:
12352108
ID de la sustancia en PubChem:
329753937
NACRES:
NA.21
grado:
ACS reagent
Ensayo:
≥99.5%
bp:
76.5-77.5 °C (lit.)
presión de vapor:
73 mmHg ( 20 °C)
En este momento no podemos mostrarle ni los precios ni la disponibilidad

grado

ACS reagent

Nivel de calidad

200

Agency

suitable for EPA ACB B21-02
suitable for EPA ACB B23-05b

densidad de vapor

3 (20 °C, vs air)

presión de vapor

73 mmHg ( 20 °C)

Ensayo

≥99.5%

Formulario

liquid

temp. de autoignición

801 °F

lim. expl.

2.2-11.5 %, 38 °F

impurezas

H2SO4, passes test (darkened)
≤0.0009 meq/g Titr. acid
≤0.200% water

residuo de evap.

≤0.0030%

color

APHA: ≤10

índice de refracción

n20/D 1.3720 (lit.)

bp

76.5-77.5 °C (lit.)

mp

−84 °C (lit.)

densidad

0.902 g/mL at 25 °C (lit.)

Formato

neat

cadena SMILES

CCOC(C)=O

InChI

1S/C4H8O2/c1-3-6-4(2)5/h3H2,1-2H3

Clave InChI

XEKOWRVHYACXOJ-UHFFFAOYSA-N

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Descripción general

El disolvente acetato de etilo de grado ACS cumple o supera los elevados estándares de la Sociedad Química Americana (ACS). Es ideal para la mayoría de las necesidades experimentales y ofrece resultados replicables y publicables.
El disolvente acetato de etilo de grado ACS se utiliza en:      
  • Síntesis química habitual      
  • Purificación y secado      
  • Limpieza crucial del material de laboratorio

Aplicación

El acetato de etilo (grado ACS) se puede utilizar como disolvente en la síntesis de 6-O-acetil glucósidos mediante acetilación selectiva de carbohidratos en presencia de una cantidad catalítica de ácido sulfúrico. Los 6-O-acetil glucósido derivados son aplicables como precursores para la síntesis de oligosacáridos complejos.[1]

Producto relacionado

Referencia del producto
Descripción
Precios

Pictogramas

FlameExclamation mark
GHS02,GHS07

Palabra de señalización

Danger

Frases de peligro

H225,H319,H336

Clasificaciones de peligro

Eye Irrit. 2 - Flam. Liq. 2 - STOT SE 3

Órganos de actuación

Central nervous system

Riesgos supl.

EUH066

Código de clase de almacenamiento

3 - Flammable liquids

Clase de riesgo para el agua (WGK)

WGK 1

Punto de inflamabilidad (°F)

24.8 °F - closed cup

Punto de inflamabilidad (°C)

-4 °C - closed cup

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Certificados de análisis (COA)

Lot/Batch Number
SHBS5231
SHBR8880
SHBR7305
STBL4509
STBL4421

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A green and regioselective acetylation of thioglycoside with ethyl acetate
Liang Pi-Hui, et al.
Tetrahedron Letters, 51(52), 6928-6931 (2010)
Quinn P Peterson et al.
Nature protocols, 5(2), 294-302 (2010-02-06)
This protocol describes the gram-scale solution-phase synthesis of the colorimetric caspase-3/7 substrate Ac-DEVD-pNA. The caspase enzymes are integral to cellular inflammation and apoptotic cascades, and are commonly studied by cell biologists, medicinal chemists and chemical biologists. In particular, the assessment
Elif Burcu Bali et al.
Asian Pacific journal of tropical biomedicine, 4(7), 505-514 (2014-09-04)
To investigate the in vitro antimicrobial potential of Thermopsis turcica Kit Tan, Vural & Küçüködük against periodontopathogenic bacteria, its antioxidant activity and cytotoxic effect on various cancer cell lines. In vitro antimicrobial activities of ethanol, methanol, ethyl acetate (EtAc), n-hexane
Chayasith Uttamapinant et al.
Nature protocols, 8(8), 1620-1634 (2013-07-28)
This protocol describes an efficient method to site-specifically label cell-surface or purified proteins with chemical probes in two steps: probe incorporation mediated by enzymes (PRIME) followed by chelation-assisted copper-catalyzed azide-alkyne cycloaddition (CuAAC). In the PRIME step, Escherichia coli lipoic acid
Libo Zhou et al.
Journal of visualized experiments : JoVE, (159) (2020-05-26)
A biomimetic NM was developed to serve as a tissue-engineering biological scaffold, which can enhance stem cell anchorage. The biomimetic NM is formed from JBNTs and FN through self-assembly in an aqueous solution. JBNTs measure 200-300 µm in length with
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Questions

1–3 of 3 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 methods or procedures should be followed to perform the measurements of 'Residue on Evaporation' and 'Titratable Acid', as outlined in the COA for product 319902?

    1 answer

    1. For an MQ 200 quality level product, it is typically not possible to share test methods. However, in the case of an ACS grade product, one can refer directly to the available ACS monograph.
      The monograph provides specific instructions for conducting the residue on evaporation test, which involves evaporating 40.0 g (45.0 mL) of the sample to dryness in a tared, preconditioned dish on a hot plate (~100 °C). Subsequently, the residue is dried at 105 °C for a duration of 30 minutes.
      Regarding the titratable acid test, the monograph advises adding 0.10 mL of phenolphthalein indicator solution to 10 mL of ethyl alcohol and neutralizing it with 0.01 N sodium hydroxide. Then, 9.0 g (10.0 mL) of the sample should be added, gently mixed, and titrated with 0.01 N sodium hydroxide until the pink color persists for 15 seconds. The requirement is that the usage of sodium hydroxide should not exceed 0.80 mL.

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