Saltar al contenido
Merck
Todas las fotos(2)

Documentos clave

Ver Toda la documentación

128465

Sigma-Aldrich

Glyoxal solution

40 wt. % in H2O

Sinónimos:

Ethanedial, Oxalaldehyde

Iniciar sesiónpara Ver la Fijación de precios por contrato y de la organización
Todas las fotos(2)

About This Item

Fórmula lineal:
OHCCHO
Número de CAS:
107-22-2
Peso molecular:
58.04
Beilstein:
1732463
Número MDL:
MFCD00006957
Código UNSPSC:
12352114
ID de la sustancia en PubChem:
57647035
NACRES:
NA.21
En este momento no podemos mostrarle ni los precios ni la disponibilidad

densidad de vapor

>1 (vs air)

Nivel de calidad

200

presión de vapor

18 mmHg ( 20 °C)

Formulario

liquid

temp. de autoignición

545 °F

concentración

40 wt. % in H2O

índice de refracción

n20/D 1.4087

solubilidad

water: soluble(lit.)

densidad

1.265 g/mL at 25 °C

grupo funcional

aldehyde

cadena SMILES

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

InChI

1S/C2H2O2/c3-1-2-4/h1-2H

Clave InChI

LEQAOMBKQFMDFZ-UHFFFAOYSA-N

¿Está buscando productos similares? Visita Guía de comparación de productos

Descripción general

The product is 40wt.% solution of glyoxal in water. Glyoxal is a linear aliphatic dialdehyde containing two aldehyde groups.[1] It participates in the synthesis of glyoxylic acid. It is highly reactive in nature. It can be prepared by oxidizing ethanol or acetaldehyde with nitric acid. It is widely employed in textile and paper industry.[2]

Aplicación

Glyoxal solution has been used as a crosslinking agent during the synthesis of DNA-containing nanoparticles in a study.[3] It has been used as derivatizing reagent, in the precolumn fluorescence derivatization of N-terminal tryptophan containing peptides which can be separated via high performance liquid chromatography.[4] It may also be used in the synthesis of glyoxal bis(4-phenyl-3-thiosemicarbazones)solution, which can be used in the spectrophotometric determination of palladium in catalysts.[5]

Otras notas

This form of glyoxal is composed of 3 moles of glyoxal and 2 moles of water in a relatively stable configuration.

Precaución

May precipitate on storage; redissolve at 50-60 °C.

Palabra de señalización

Danger

Frases de peligro

H314,H317,H335,H341

Clasificaciones de peligro

Eye Dam. 1 - Muta. 2 - Skin Corr. 1 - Skin Sens. 1 - STOT SE 3

Órganos de actuación

Respiratory system

Código de clase de almacenamiento

8A - Combustible corrosive hazardous materials

Clase de riesgo para el agua (WGK)

WGK 1

Punto de inflamabilidad (°F)

Not applicable

Punto de inflamabilidad (°C)

Not applicable

Equipo de protección personal

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

Elija entre una de las versiones más recientes:

Certificados de análisis (COA)

Lot/Batch Number
SDBB2279
STBL3811
STBL3892
MKCV9680
MKCV5435

¿No ve la versión correcta?

Si necesita una versión concreta, puede buscar un certificado específico por el número de lote.

Busque por un COA

¿Ya tiene este producto?

Encuentre la documentación para los productos que ha comprado recientemente en la Biblioteca de documentos.

Visite la Librería de documentos

Los clientes también vieron

Slide 1 of 2

1 of 2

2,6-Diisopropylaniline technical grade, 90%

Sigma-Aldrich

157716

2,6-Diisopropylaniline

2,2-Dimethoxyacetaldehyde solution 60 wt. % in H2O

Sigma-Aldrich

479047

2,2-Dimethoxyacetaldehyde solution

Eagleson M.
Concise Encyclopedia Chemistry, 465-465 (1994)
"High-performance liquid chromatography of N-terminal tryptophan-containing peptides with precolumn fluorescence derivatization with glyoxal"
Kai M, et al.
Journal of Chromatography A, 653(2), 235-240 (1993)
Eagleson M.
Concise Encyclopedia Chemistry, 312-312 (1994)
Spectrophotometric determination of palladium in catalysts with glyoxal bis (4-phenyl-3-thiosemicarbazone)
Asuero A, et al.
Analyst, 111(7), 747-755 (1986)
Jing Xu et al.
Journal of visualized experiments : JoVE, (59)(59), e3612-e3612 (2012-01-11)
More than 32,000 patients are diagnosed with pancreatic cancer in the United States per year and the disease is associated with very high mortality (1). Urgent need exists to develop novel clinically-translatable therapeutic strategies that can improve on the dismal
Ver todos los artículos relacionados

Questions

1–7 of 7 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

      Helpful?

  3. What are the storage conditions of the 100G package size supplied in a single 125 mL bottle?

    1 answer

    1. This product may be stored at room temperature. Note that any precipitates that may appear upon long term storage may be dissolved by warming the material to 50-60 °C.

      Helpful?

  4. Would the Glyoxal in this solution be stable if added to an Ethanol water mixture (50-75%) and stored for a prolonged period of time?

    1 answer

    1. Stability/shelf life information for Product 128465 dissolved in ethanol is unavailable.

      Helpful?

  5. Hello, for the Glyoxal solution 40% (128465) it is described "This form of glyoxal is composed of 3 moles of glyoxal and 2 moles of water..." What does it mean? If glyoxal solution is 40% the molar ratio glyoxal:water should be 1:5. Best regards Maja

    1 answer

    1. Product 128465 concentration is ~40% wt % in H2O which is 40 g of solid divided by 100 g of water and ~8.8 M (Moles/L). Please be mindful that the moles represent a different unit of measurement than weight percent and molarity and their ratios will vary as moles do not represent the concentration of the solution. A mole is defined as the amount of a substance that contains exactly 6.0221023 elementary entities of the given substance. 2 moles of water molecules are needed to stabilize 3 moles of glyoxal molecules as pure glyoxal is not commonly encountered since solid glyoxal around room temperature is a yellow liquid that gives off a green vapor. Commercially, it is usually handled as a 40% aqueous solution (density near 1.24 g/mL).

      Helpful?

  6. Hello, Is there a straightforward way to get this solution of glyoxal into the gas phase so that it can be introduced into an atmospheric simulation chamber for the purpose of testing developmental gas sensing systems? Kind regards, Eibhlín

    1 answer

    1. Information regarding the vapor pressure of the glyoxal cannot be provided. The conditions required for volatilization are unknown. It may be possible to begin by making an aerosol, using a bottle-type sprayer, see Product Z126306-1SET for example:
      https://www.sigmaaldrich.com/product/aldrich/z126306

      To further discuss, we kindly ask you to navigate to the link https://www.sigmaaldrich.com/techservice and click on "Product Technical Inquires" under the Products Section with all the required information so that a member of our Technical Service team can reach out to you to assist further. Thank you.

      Helpful?

  7. Hi! We want to buy 100g, but we were wondering if all the volume comes togheter in a big vial, or is it individual vials? thanks!

    1 answer

    1. The 100G package size is supplied in a single 125 mL bottle.

      Helpful?

Reviews

No rating value

Active Filters

Nuestro equipo de científicos tiene experiencia en todas las áreas de investigación: Ciencias de la vida, Ciencia de los materiales, Síntesis química, Cromatografía, Analítica y muchas otras.

Póngase en contacto con el Servicio técnico