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A5633

Sigma-Aldrich

Antifoam A Concentrate

active silicone polymer 100 %

Synonym(s):

Silicone Antifoam Solution

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About This Item

UNSPSC Code:
12161900
NACRES:
NA.25

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

Related Categories

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

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. It has also been used as a constituent in the preparation of aerosol generation fluid.

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

Regulatory Listings

Regulatory Listings are mainly provided for chemical products. Only limited information can be provided here for non-chemical products. No entry means none of the components are listed. It is the user’s obligation to ensure the safe and legal use of the product.

PRTR

Class I Designated Chemical Substances

FSL

Group 4: Flammable liquids
Type 3 petroleums
Hazardous rank III
Water insoluble liquid

ISHL Indicated Name

Substances Subject to be Indicated Names

ISHL Notified Names

Substances Subject to be Notified Names

JAN Code

A5633-VAR:
A5633-100G-C:
A5633-BULK:
A5633-100G:
A5633-25G:

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Certificates of Analysis (COA)

Lot/Batch Number
0000245207
0000245207
MKCW8303
0000245213
MKCT7478

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Verreault D, et al.
Applied and Environmental Microbiology, 81(20), 7305-7311 (2015)
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Hamming OJ, et al.
The Embo Journal, 32(23), 3055-3065 (2013)
Foams and antifoams
Karakashev SI and Grozdanova MV
Advances in Colloid and Interface Science, 176, 1-17 (2012)

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