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A5633

Sigma-Aldrich

Antifoam A Concentrate

active silicone polymer 100 %

Synonym(s):

Silicone Antifoam Solution

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25 G
CN¥725.48
100 G
CN¥1,561.82

CN¥725.48

Available to ship onApril 23, 2025Details

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25 G
CN¥725.48
100 G
CN¥1,561.82

About This Item

UNSPSC Code:
12161900
NACRES:
NA.25

CN¥725.48

Available to ship onApril 23, 2025Details

Request a Bulk Order

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

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Antifoam A Concentrate active silicone polymer 100 %

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Antifoam A Concentrate

Antifoam A concentrate active silicone polymer 100%

A6582

Antifoam A concentrate

Antifoam C Emulsion aqueous-silicone emulsion

A8011

Antifoam C Emulsion

Antifoam SE-15 aqueous emulsion for bacterial and mammalian systems

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

description

100% active silicone polymer

description

-

description

-

description

-

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

-

composition

active silicone polymer, 100%

composition

-

composition

-

composition

-

General description

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.

Pictograms

Environment
GHS09

Signal Word

Warning

Hazard Statements

H410

Precautionary Statements

P273 - P391 - P501

Hazard Classifications

Aquatic Acute 1 - Aquatic Chronic 1

Storage Class Code

10 - Combustible liquids

WGK

WGK 3

Flash Point(F)

>213.8 °F - closed cup

Flash Point(C)

> 101 °C - closed cup

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves
  • Specification Sheet

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    Certificates of Analysis (COA)

    Lot/Batch Number
    MKCX5705
    MKCX2106
    0000245207
    0000245207
    MKCW8303

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    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)
    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)
    Resistance of aerosolized bacterial viruses to relative humidity and temperature
    Verreault D, et al.
    Applied and Environmental Microbiology, 81(20), 7305-7311 (2015)
    Foams and antifoams
    Karakashev SI and Grozdanova MV
    Advances in Colloid and Interface Science, 176, 1-17 (2012)

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