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The biocide is typically applied as a paint, i.e. through physical adsorption. The biocides prevent the formation of biofilms. [1] Other biocides are toxic to larger organisms in biofouling, such as algae. Formerly, the so-called tributyltin (TBT) compounds were used as biocides (and
The Biocidal Products Directive (BPD) also known as the Biocides Directive is European Union Directive, (98/8/EC), which concerns biocides.It is officially known as Directive 98/8/EC of the European Parliament and of the Council of 16 February 1998 concerning the placing of biocidal products on the market. [1]
Methylisothiazolinone is used for controlling microbial growth in water-containing solutions. [4] It is typically used in a formulation with 5-chloro-2-methyl-4-isothiazolin-3-one (CMIT), in a 3:1 mixture (CMIT:MIT) sold commercially as Kathon. Kathon is supplied to manufacturers as a concentrated stock solution containing from 1.5 to 15% of ...
[4]: iv In paints, it is commonly used alone or as a mixture with methylisothiazolinone. Typical concentrations in products are 200–400 ppm depending on the application area and the combination with other biocides. According to a study in Switzerland, 19% of the paints, varnishes and coatings contained BIT in 2000.
Biocides can be added to other materials (typically liquids) to protect them against biological infestation and growth. For example, certain types of quaternary ammonium compounds ( quats ) are added to pool water or industrial water systems to act as an algicide, protecting the water from infestation and growth of algae .
Tributyltin (TBT) is an umbrella term for a class of organotin compounds which contain the (C 4 H 9) 3 Sn group, with a prominent example being tributyltin oxide. [1] For 40 years TBT was used as a biocide in anti-fouling paint, commonly known as bottom paint, applied to the hulls of oceangoing vessels. [2]
Dichlorooctylisothiazolinone, DCOIT or DCOI, is the organic compound with the formula SC(Cl)=C(Cl)C(O)NC 7 H 15.It is a white solid that melts near room temperature. It is an isothiazolinone, a class of heterocyclic compounds used as biocides.
Barley straw, in England, is placed in mesh bags and floated in fish ponds or water gardens to help reduce algal growth without harming pond plants and animals. Barley straw has not been approved by the United States Environmental Protection Agency (EPA) for use as a pesticide and its effectiveness as an algaecide in ponds has produced mixed results during university testing in the United ...