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A5633

Sigma-Aldrich

Antifoam A Concentrate

active silicone polymer 100 %

Synonyme(s) :

Silicone Antifoam Solution

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25 G
62,50 €
100 G
141,00 €

62,50 €

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25 G
62,50 €
100 G
141,00 €

About This Item

Code UNSPSC :
12161900
Nomenclature NACRES :
NA.25

62,50 €

En stockDétails

Devis pour commande en gros

Description

100% active silicone polymer

Niveau de qualité

200

Forme

suspension

Ne contient pas

emulsifier

Composition

active silicone polymer, 100%

Technique(s)

cell culture | mammalian: suitable
microbiological culture: suitable

Catégories apparentées

Description générale

Antifoam A Concentrate is an extremely effective foam suppressor[1] 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

An extremely effective foam suppresser for use in aqueous and non-aqueous systems.
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.[2][3] It has also been used as a constituent in the preparation of aerosol generation fluid.[4]

Reconstitution

1-50 ppm is adequate for most applications.

Pictogrammes

Environment
GHS09

Mention d'avertissement

Warning

Mentions de danger

H410

Conseils de prudence

P273 - P391 - P501

Classification des risques

Aquatic Acute 1 - Aquatic Chronic 1

Code de la classe de stockage

10 - Combustible liquids

Classe de danger pour l'eau (WGK)

WGK 3

Point d'éclair (°F)

>213.8 °F - closed cup

Point d'éclair (°C)

> 101 °C - closed cup

Équipement de protection individuelle

Eyeshields, Gloves, type ABEK (EN14387) respirator filter

Listes réglementaires

Les listes réglementaires sont principalement fournies pour les produits chimiques. Seules des informations limitées peuvent être fournies ici pour les produits non chimiques. L'absence d'indication signifie qu'aucun des composants n'est répertorié. Il incombe à l'utilisateur de s'assurer de l'utilisation sûre et légale du produit.

EU REACH SVHC Candidate List

CAS No.

EU REACH Annex XVII (Restriction List)

CAS No.

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Certificats d'analyse (COA)

Lot/Batch Number
MKCX2106
0000245207
0000245207
MKCW8303
0000245213

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Applied and Environmental Microbiology, 81(20), 7305-7311 (2015)
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Questions

1–3 sur 3 questions  

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

    1 réponse

    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 réponse

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

    1 réponse

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

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