What is BS 5666-7 - Determination of total tin in wood preservative about?
BS 5666-7 discusses method of analysis of wood preservatives and treated timber. The aim of BS 5666-7 is to provide the best industrial practice to determine the reliability of the wood preservative.
BS 5666-7 is the seventh part of BS 5666 details procedures for the determination of the total tin content present in solutions and in treated wood containing bis(tri-n-butyltin) oxide. The methods have been found suitable for the determination of tin in the presence of the following:
- Copper naphthenate
- Dieldrin (HEOD)
- ¾-hexachlorocyclohexane (¾-HCH, lindane)
- Pentachlorophenyl laurate
- Pentachlorophenol and other chlorophenols
- 2-phenylphenol
- Zinc naphthenate
- Water-repellent waxes and resins
Who is BS 5666-7 - Determination of total tin in wood preservative for?
BS 5666-7 on wood preservatives is useful for:
- Wooden furniture manufacturers
- Wooden products suppliers
- Testing laboratories
- Quality control personnel
Why should you use BS 5666-7 - Determination of total tin in wood preservative?
Wood preservative solutions containing bis(tri-n-butyltin) oxide are usually formulated with technical grade material containing at least 95 % bis(tri-n-butyltin) oxide, e.g. material complying with the requirements of BS 4630. It is known that this compound can be degraded to give dibutyltin and monobutyltin compounds that will result in a decrease in fungistatic activity. It may, therefore, be necessary to determine the organotins present, but in many cases the determination of the total tin content gives adequate information.
BS 5666-7 describes a laboratory method of testing which gives a basis for the assessment of the preventive action of a wood preservative when applied as a surface treatment. This can help to determine the fungal activity of the wood preservative that can ensure that the preservative is performing as desired.