Biocides, aldehydes

A number of aldehydes possess antimicrobial properties, including sporicidal activity however, only two, formaldehyde and glutaraldehyde, are used for disinfection. Both these aldehydes are highly effective biocides and their use as chemosterilants reflect this. 

Colorimetry. Laboratory data on the persistence of biocides formulated in glutaraldehyde and acrolein are available [1260]. A colorimetric general aldehyde detection method based on m-phenylenediamine was used. Such studies follow the demand for better understanding of ecologic systems in the aspect of environmental protection. 

Combined Chlorine-Aldehyde Treatment A combined chlorine-aldehyde treatment that has two stages, that is, chlorination and subsequent biocide application, has been suggested. Short-residence-time shock doses of glutaraldehyde have been applied after chlorination [1180]. It has been established that a primary chlorination in overall bacterial control is useful. 

Synonyms Acraldehyde Acrylaldehyde /rans-Acrolein Acrylic aldehyde AI3-24160 Allyl aldehyde Aqualin Aqualine Biocide BRN 1701567 Caswell No. 009 CCRIS 3278 Crolean EINECS 203-453-4 Ethylene aldehyde Magnacide Magnacide H NSC 8819 Papite Propenal 2-Propenal Prop-2-en-l-al 2-Propen-l-one Propylene aldehyde RCRA waste number P003 Slimicide UN 1092. 

Biodegradation of an aldehyde biocide in rotating biological contactors. World J. Microbiol. Biolechnol., 24, 1633-1641. 

SYNS ACQUINITE ACRALDEHYDE ACROLEINA (ITALIAN) ACROLEINE pUTCH, FRENCH) ACRYLALDEHYD (GERMAN) ACRYLALDEHYDE ACRYLIC ALDEHYDE AKROLEIN (CZECH) AKROLEINA (POLISH) ALDEHYDE ACRYLIQUE (FRENCH) ALDEIDE ACRILICA (ITALIAN) ALLYL ALDEHYDE AQUAUNE BIOCIDE CROLEAN ETHYLENE ALDEHYDE MAGNACIDE H NSC-8819 ... 

In addition to water, these paints contain biocides, surfactants, pigments, monomers, coalescing solvents, driers, and volatile additives. 3,121 Volatile components contained in these include aldehydes, aliphatic hydrocarbons (straight chain and cyclic), aromatic hydrocarbons, esters, ethers, glycol ethers, glycol ether esters, and halogenated hydrocarbons. Some of these materials are listed in Table 12.4. 

Typical biocides include hypochlorous acid, chlorine dioxide, hypobromus acid, hydrogen peroxide, ozone, ultraviolet-light treatment, phenolics, aldehydes, and quaternary ammonium compounds (Ref 73, 80). A brief description of each follows (Ref 73, 80). Hypochlorous acid is probably the most commonly used biocide and also one of the most powerful oxidizing agents. The sources of hypochlorous acid are chlorine gas and sodium hypochlorite. In aque-... 

The aldehyde groups are chemically reactive and in biocide application reaction is with primary amine groups. It is generally applied in aqueous solution where glutaraldehyde exists in a complex equilibrium mixture of different hydrated forms. 

SYNONYMS Acquinite, acraldehyde, acroleine, acrylaldehyde, acrylic aldehyde, allyl aldehyde, aqualin, biocide. 

SYNONYMS acraldehyde, acrylic aldehyde, allylaldehyde, 2-propenal, acrylaldehyde, aqaulin, acquinite, acrolein, biocide, crolean, magnacide, slimicide, transacrolein... 

CHO (aldehyde carbonyl), simplest member of the class of nnsatnrated aldehydes Synonyms 2-propenal 2-propen-1-one allyl aldehyde acrylaldehyde acraldehyde ethylene aldehyde aqualin biocide... 

There are two toxophoric groups in the acrolein molecule, the activated vinyl group and the aldehyde group both groups are able to react with nucleophilic cell entities. Due to this fact acrolein is highly reactive and highly effective and may be defined as a biocide rather than a microbicide. 

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