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A5633

Antifoam A Concentrate

active silicone polymer 100 %

Synonym(s):

Silicone Antifoam Solution

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Pack SizeSKUAvailabilityPrice
25 g

Available to ship TODAYfromMilliporeSigma Canada Ltd.

$83.60
100 g

Available to ship TODAYfromMilliporeSigma Canada Ltd.

$159.00

About This Item

NACRES:
NA.25
UNSPSC Code:
12161900

$83.60

Available to ship TODAYDetails

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description

100% active silicone polymer

Quality Level

200

form

suspension

does not contain

emulsifier

composition

active silicone polymer, 100%

technique(s)

cell culture | mammalian: suitable, microbiological culture: suitable

density

(0.97 g/mL at 25 °C (77 °F))

General description

Antifoam A Concentrate is an extremely effective foam suppressor for aqueous and non-aqueous systems. It is 100% active silicone polymer. No emulsifiers are present. Antifoam A Concentrate is typically effective at 1-100 ppm. Antifoam A Concentrate should be diluted with 3-10 parts of propylene glycol (aqueous) or vegetable oil (nonaqueous) with slow mixing. The product will be stable in the pH range of 5 to 9. Antifoam A Concentrate can be added directly to a fermentation medium, but it is not recommended that it be pumped to a fermenter on an as-needed basis.

Application

Antifoam A Concentrate has been used as a component of Luria Bertani culture medium for growth of BL21 (DE3) E. coli cells transformed with the plasmids. It has also been used as a constituent in the preparation of aerosol generation fluid.
An extremely effective foam suppresser for use in aqueous and non-aqueous systems.

Preparation Note

1-50 ppm is adequate for most applications.

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This Item
A6582A8011A8582
Antifoam A Concentrate active silicone polymer 100 %

Sigma-Aldrich

A5633

Antifoam A Concentrate

Antifoam A concentrate active silicone polymer 100%

Sigma-Aldrich

A6582

Antifoam A concentrate

Antifoam C Emulsion aqueous-silicone emulsion

Sigma-Aldrich

A8011

Antifoam C Emulsion

Antifoam SE-15 aqueous emulsion for bacterial and mammalian systems

Sigma-Aldrich

A8582

Antifoam SE-15

technique(s)

cell culture | mammalian: suitable, microbiological culture: suitable

technique(s)

cell culture | hybridoma: suitable, microbiological culture: suitable

technique(s)

cell culture | hybridoma: suitable, microbiological culture: suitable

technique(s)

cell culture | hybridoma: suitable

form

suspension

form

emulsion (aqueous)

form

emulsion

form

emulsion (aqueous)

description

100% active silicone polymer

description

-

description

-

description

-

density

(0.97 g/mL at 25 °C (77 °F))

density

0.97 g/mL at 25 °C

density

1.01 g/mL

density

1.0 g/mL at 25 °C

Quality Level

200

Quality Level

200

Quality Level

200

Quality Level

200

does not contain

emulsifier

does not contain

-

does not contain

-

does not contain

-

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pictograms

Environment
GHS09

Storage Class

10 - Combustible liquids

flash_point_f

>213.8 °F - closed cup

flash_point_c

> 101 °C - closed cup

ppe

Eyeshields, Gloves, type ABEK (EN14387) respirator filter

signalword

Danger

Hazard Classifications

Aquatic Acute 1 - Aquatic Chronic 1 - PBT - vPvB

Choose from one of the most recent versions:

Certificates of Analysis (COA)

Lot/Batch Number
0000517149
0000517149
MKCZ6577
MKCZ6578
MKCX5705

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Resistance of aerosolized bacterial viruses to relative humidity and temperature
Verreault D, et al.
Applied and Environmental Microbiology, 81(20), 7305-7311 (2015)
Interferon lambda 4 signals via the IFN$\lambda$ receptor to regulate antiviral activity against HCV and coronaviruses
Hamming OJ, et al.
The Embo Journal, 32(23), 3055-3065 (2013)
Reduced IFN lambda 4 activity is associated with improved HCV clearance and reduced expression of interferon-stimulated genes
Terczynska DE, et al.
Nature Communications, 5, 5699-5699 (2014)
View All Related Papers

Global Trade Item Number

SKUGTIN
A5633-100G04061833376171
A5633-25G04061833376188

Questions

1–4 of 4 Questions  

  1. Is this product food grade? I would like an effective anti-foam agent for when I propagate beer yeast.

    1 answer

    1. This product is not a food grade Antifoam A Concentrate. Unless otherwise stated, this product is intended for research use only. It is not suitable for any other purpose, which includes, but is not limited to, unauthorized commercial use, in vitro diagnostic use, or therapeutic use in humans or animals.

      Currently. a food grade Antifoam A Concentrate is not offered.

      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. Can antifoam A be autoclaved when added to oil or does it need to be added after oil is autoclaved

    1 answer

    1. Autoclaving may result in phase separation and may require remixing the emulsion. A different emulsifier is present in each of the Antifoam emulsions.

      Helpful?

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