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695092

Sigma-Aldrich

Ácido acético

Acetic acid

glacial, ACS reagent, ≥99.7%

Sinónimos:

Ácido acético glacial

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About This Item

Fórmula lineal:
CH3CO2H
Número de CAS:
64-19-7
Peso molecular:
60.05
Beilstein:
506007
Número CE:
200-580-7
Número MDL:
MFCD00036152
Código UNSPSC:
12352106
ID de la sustancia en PubChem:
329761715
NACRES:
NA.21
En este momento no podemos mostrarle ni los precios ni la disponibilidad

grado

ACS reagent

Nivel de calidad

200

densidad de vapor

2.07 (vs air)

presión de vapor

11.4 mmHg ( 20 °C)

Ensayo

≥99.7%

Formulario

liquid

temp. de autoignición

800 °F

lim. expl.

16 %, 92 °F
4 %, 59 °F

técnicas

mass spectrometry (MS): suitable

impurezas

Cr2O72- reducers, passes test
 MnO4- reducers, passes test
≤0.0004 meq/g Titr. base
≤0.01% acetic anhydride

residuo de evap.

≤0.001%

color

APHA: ≤10

índice de refracción

n20/D 1.371 (lit.)

pH

2.5 (20 °C, 50 g/L)

bp

117-118 °C (lit.)

mp

16.2 °C (lit.)

densidad

1.04 g/mL at 25 °C (lit.)

trazas de anión

chloride (Cl-): ≤1 ppm
sulfate (SO42-): ≤1 ppm

trazas de catión

Fe: ≤0.2 ppm
heavy metals: ≤0.5 ppm (by ICP)

cadena SMILES

[F2C(F2C)13F3C]C(O)=O

InChI

1S/C2H4O2/c1-2(3)4/h1H3,(H,3,4)

Clave InChI

QTBSBXVTEAMEQO-UHFFFAOYSA-N

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Descripción general

El ácido acético es un ácido carboxílico orgánico. Es un líquido higroscópico con olor acre El ácido acético glacial es el ácido acético anhidro. Forma dímeros unidos por enlaces de hidrógeno en disolución y en forma gaseosa normalmente denominados fases. Es un ácido débil en la naturaleza.[1]

Aplicación

El ácido acético se emplea mucho como disolvente en varias reacciones de oxidación.[1] Puede utilizarse en el análisis de péptidos sintéticos mediante espectrometría de masas (MS/ MS) en tándem con capacidad de disociación por transferencia de electrones (ETD).[2] Puede utilizarse en la preparación de ácido peroxiacético (desinfectante), a través de reacción con perhidrol (peróxido de hidrógeno al 30%).[1]

Otras notas

4 l y 4 X 4l se envasan en botellas de polietileno

Pictogramas

FlameCorrosion
GHS02,GHS05

Palabra de señalización

Danger

Frases de peligro

H226,H314

Clasificaciones de peligro

Eye Dam. 1 - Flam. Liq. 3 - Skin Corr. 1A

Código de clase de almacenamiento

3 - Flammable liquids

Clase de riesgo para el agua (WGK)

WGK 1

Punto de inflamabilidad (°F)

102.2 °F - closed cup

Punto de inflamabilidad (°C)

39 °C - closed cup

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Certificados de análisis (COA)

Lot/Batch Number
MKCX4348
MKCX0387
MKCW8803
MKCW4968
MKCW5083

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Ácido acético United States Pharmacopeia (USP) Reference Standard

USP

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Supelco

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Ácido acético

John E P Syka et al.
Proceedings of the National Academy of Sciences of the United States of America, 101(26), 9528-9533 (2004-06-24)
Peptide sequence analysis using a combination of gas-phase ion/ion chemistry and tandem mass spectrometry (MS/MS) is demonstrated. Singly charged anthracene anions transfer an electron to multiply protonated peptides in a radio frequency quadrupole linear ion trap (QLT) and induce fragmentation
Eagleson M.
Concise Encyclopedia Chemistry, 5-5 (1994)
Isabelle Brunet et al.
The Journal of clinical investigation, 124(7), 3230-3240 (2014-06-18)
Autonomic sympathetic nerves innervate peripheral resistance arteries, thereby regulating vascular tone and controlling blood supply to organs. Despite the fundamental importance of blood flow control, how sympathetic arterial innervation develops remains largely unknown. Here, we identified the axon guidance cue
Katharine Trenholme et al.
Antimicrobial agents and chemotherapy, 58(7), 3666-3678 (2014-04-16)
Therapies to prevent transmission of malaria parasites to the mosquito vector are a vital part of the global malaria elimination agenda. Primaquine is currently the only drug with such activity; however, its use is limited by side effects. The development
Xianbao Deng et al.
The New phytologist, 201(4), 1469-1483 (2013-11-26)
• Chalcone synthase (CHS) is the key enzyme in the first committed step of the flavonoid biosynthetic pathway and catalyzes the stepwise condensation of 4-coumaroyl-CoA and malonyl-CoA to naringenin chalcone. In plants, CHS is often encoded by a small family
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Questions

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  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 does mean GL in the item code 695092-500ml-GL?

    1 answer

    1. The "GL" in the SKU number indicates that the material is packaged in a glass bottle. The SKUs without the "GL" will be packaged in a poly bottle.

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