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Merck

A5758

Antifoam Y-30 Emulsion

aqueous-silicone emulsion

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Código UNSPSC:
12161900

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Nivel de calidad

200

Formulario

emulsion

contiene

emulsifier

Descripción general

Antifoam Y-30 Emulsion is an aqueous emulsion containing 30% active silicon. It contains non-ionic emulsifiers different from those in Antifoam Emulsions B and C. It is designed to control foam in aqueous systems.
Antifoam is also known as defoamer. It is a chemical additive that reduces and hinders the formation of foam in industrial process liquids. It is used to prevent formation of foam or is added to break foam that is already formed.

Aplicación

Antifoam Y-30 Emulsion is used for the following applications:
  • Chemostat cultivation.[1]
  • Cultivation conditions, such as Fed-batch fermentation.[2][3]
  • Bacterial strains and growth conditions (used in all aerosol experiments).[4]

Otras notas

A 30% aqueous emulsion of Antifoam A concentrate.
More easily dispersed in aqueous systems than Antifoam A concentrate.

Código de clase de almacenamiento

10 - Combustible liquids

Clase de riesgo para el agua (WGK)

WGK 3

Punto de inflamabilidad (°F)

Not applicable

Punto de inflamabilidad (°C)

Not applicable

Equipo de protección personal

Eyeshields, Gloves, type ABEK (EN14387) respirator filter

Listados normativos

Los listados normativos se proporcionan para los productos químicos principalmente. Para los productos no químicos sólo se puede proporcionar información limitada. Si no hay ninguna entrada, significa que ninguno de los componentes está en la lista. Es obligación del usuario garantizar el uso seguro y legal del producto.

EU REACH Annex XVII (Restriction List)

CAS No.

Elija entre una de las versiones más recientes:

Certificados de análisis (COA)

Lot/Batch Number
MKCJ9418
MKCF1896
MKCC6091
MKBZ1756V
MKBX0199V

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Divey Saini et al.
Tuberculosis (Edinburgh, Scotland), 92(2), 160-165 (2011-12-27)
A murine low dose (LD) aerosol model is commonly used to test tuberculosis vaccines. Doses of 50-400 CFU (24h lung CFU) infect 100% of exposed mice. The LD model measures progression from infection to disease based on organ CFU at
N Meinander et al.
Microbiology (Reading, England), 142 ( Pt 1), 165-172 (1996-01-01)
Recombinant Saccharomyces cerevisiae harbouring the xylose reductase (XR) gene XYL1 from Pichia stipitis was grown in anoxic chemostat culture at two different dilution rates. At each dilution rate a transient experiment, encompassing a shift in the sugar content of the
Mehmedalija Jahic et al.
Microbial cell factories, 2(1), 6-6 (2003-07-23)
BACKGROUND: A temperature limited fed-batch (TLFB) technique is described and used for Pichia pastoris Mut+ strain cultures and compared with the traditional methanol limited fed-batch (MLFB) technique. A recombinant fusion protein composed of a cellulose-binding module (CBM) from Neocallimastix patriciarum
Sarah J Routledge et al.
Methods in molecular biology (Clifton, N.J.), 866, 87-97 (2012-03-29)
Pichia pastoris is a widely used host for recombinant protein production. The foaming associated with culturing it on a large scale is commonly prevented by the addition of chemical antifoaming agents or "antifoams." Unexpectedly, the addition of a range of
Modeling of growth and energy metabolism of Pichia pastoris producing a fusion protein.
M. Jahic, J.C. Rotticci-Mulder, M. Martinelle, K. Hult, S-O. Enfors
Bioprocess and Biosystems Engineering, 24, 385-393 (2002)
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Preguntas

1–9 de 9 Preguntas  

  1. How can I determine the shelf life / expiration / retest date of this product?

    1 respuesta

    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/418/501/product-dating-information-06-25-mk.pdf

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  2. How is shipping temperature determined? And how is it related to the product storage temperature?

    1 respuesta

    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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  3. Are Antifoam A (product number 10794) and Antifoam Y-30 (product number A5758) the same product? Can I use Antifoam Y-30 (product number A5758) as a replacement for Antifoam A (product number 10794)?

    1 respuesta

    1. The A5758, Antifoam Y-30, is a 30% solution containing non-ionic emulsifiers. It is prepared from an Antifoam A product that does not contain emulsifiers. The 10794, Antifoam A, is a deleted product, but was also a 30% solution containing emulsifiers. These products are from different brands, but functionally are identical and may be used interchangeably.

      Please view the link below for the product information sheet for the offered Antifoam products:
      https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/product/documents/136/342/a5758pis.pdf

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  4. What is the difference between product A5758, Antifoam Y-30 emulsion and product A6457?

    1 respuesta

    1. Product A6457, a molecular biology reagent, has been function-tested by Sigma for use in bacterial fermentation. Product A5758 has not been tested in this application by Sigma.

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  5. How can Product No. A5758, Antifoam Y-30 Emulsion be used?

    1 respuesta

    1. This antifoam can be diluted with water. It is effective at low concentrations (1-100 ppm is the usual range to use). Trials can start at 50 ppm (active silicone), and amounts may be reduced to where the level of foam control is desired. The product should be agitated before use.

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  6. Can Antifoam Y-30 Emulsion, Product A5758, be autoclaved?

    1 respuesta

    1. Dow Corning® does not recommend that the emulsion be autoclaved since autoclaving can adversely affect the product.

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  7. What is Antifoam Y-30 emulsion?

    1 respuesta

    1. Antifoam Y-30 emulsion,a Dow-Corning product, is a 30% active silicone emulsion, whose usage is intended for controlling foam in aqueous systems. The composition of the antifoam is considered proprietary by the manufacturer.  However, the emulsifier type is described as nonionic.

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  8. What is the Department of Transportation shipping information for this product?

    1 respuesta

    1. Transportation information can be found in Section 14 of the product's (M)SDS.To access the shipping information for this material, use the link on the product detail page for the product.

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  9. Has there been a name change for Antifoam Y-30 Emulsion, Product A5758?

    1 respuesta

    1. Yes. The product was formerly listed under the name "Antifoam A Emulsion".  Although there has been a name change, there is no change in the composition of the antifoam. It is the same product.

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