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A5758

Antifoam Y-30 Emulsion

aqueous-silicone emulsion

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UNSPSC Code:
12161900
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Quality Segment

form

emulsion

contains

emulsifier

General description

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.

Application

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

Other Notes

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

10 - Combustible liquids

Temperatura zapłonu (°F)

Not applicable

Temperatura zapłonu (°C)

Not applicable

PPE (środki ochrony indywidualnej)

Eyeshields, Gloves, type ABEK (EN14387) respirator filter

Wykazy regulacyjne

Wykazy regulacyjne dotyczą głównie produktów chemicznych. Można w nich podawać ograniczoną liczbę informacji na temat produktów niechemicznych. Brak wpisu oznacza, że żaden ze składników nie znajduje się w wykazie. Użytkownik odpowiada za zagwarantowanie bezpiecznego i zgodnego z prawem stosowania produktu.

71-43-2

CAS No.

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Certyfikaty analizy (CoA)

Lot/Batch Number

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Questions

1–10 of 10 Questions  

  1. I was using silicone antifoam in my e.coli culture,can i use y-30 emulsion antifoam instead of silicone antifoam and if i can use it how should i prepare my solution ? I used to prepare my silicone antifoam %20 concentration.

    1 answer

    1. While comparison studies between Silicone Antifoam and Antifoam Y-30 Emulsion in e. coli applications have not been conducted, it is likely that Antifoam Y-30 emulsion can be utilized similarly to the Silicone Antifoam. As noted in the technical bulletins, linked below, the former has a 30% active silicone content and the latter has 20% active silicone. As such, optimization of the current volume of antifoam may be necessary.

      https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/product/documents/136/342/a5758pis.pdf
      https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/product/documents/109/197/85390dat.pdf

      General directions of use for Antifoam Y-30 emulsions are noted below:

      Antifoam Y-30 Emulsion can be prediluted with
      3-10 parts of cool water to aid in dispersion. Prediluted
      suspensions should be used immediately. Antifoam
      Y-30 Emulsion is typically effective at 1-100 ppm. The
      flow properties of Antifoam Y-30 Emulsion are such that
      it can be pumped on an as-needed basis to the fermentor
      system with sufficient agitation to disperse the antifoam.

      Helpful?

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

      Helpful?

  3. 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?

  4. 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 answer

    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

      Helpful?

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

    1 answer

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

    1 answer

    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.

      Helpful?

  7. What is Antifoam Y-30 emulsion?

    1 answer

    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.

      Helpful?

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

    1 answer

    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.

      Helpful?

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

    1 answer

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

      Helpful?

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

    1 answer

    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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