A set of copies of the laws relating to wood preservation in Brazil (in Portuguese) have been deposited with the IRG Secretariat. Generally speaking, it can be said that all public constructions have to comply with the laws that have been laid down. All organisations (governmental and private) which produce or apply wood preservatives are registered. The private sector is not obliged to abide by these regulations. Pentachlorophenol is still the dominant preservative in the south of the country. Poles are treated with the usual water-soluble salts. Sleepers are impregnated with local creosote. To my knowledge, there are no real restrictions on the use of specific wood preservatives, apart from g-HCH (gamma-hexacyclohexane) which is forbidden to be used.

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