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Mineral Antiseptics

An antiseptic is a chemical material that prevents wooden products from rotting.

Protective Functions of Antiseptics:

• Protect against fungi,
• Protect against external atmospheric exposure,
• Be resistant to atmospheric influence (not leach out),
• Not discolor the wood,
• Be safe.

Mineral Antiseptics:

Sodium fluoride — the most widely used mineral antiseptic for wood protection. It leaches out easily with water, so a protective coating must be applied on top. It initiates metal corrosion (where present — nails, etc.). The formulations are toxic when applied.

Sodium fluorosilicate — poorly soluble in water. Used as part of coating pastes. Used together with Sodium fluoride.

Ammonium fluoride and ammonium bifluoride — used as an antiseptic at a concentration of 3-5%. More toxic compared to sodium fluoride, including to fungi that attack wood.

Zinc chloride — leaches out of wood material fairly easily. 3.5% solutions are used. More concentrated mixtures reduce the strength of the wood. It significantly increases electrical conductivity.

Antiseptics Can Also Include:

Borax — an antiseptic material that has proven effective against fungi and wood-boring pests. It is also a fire-retardant component.

Carbamide — used as a modifier in complex formulations. It is also a fire-retardant component.

Ammonia water — used as a solvent and to stabilize the antiseptic within the wood structure. It is also a corrosion inhibitor upon contact with metal.

Paraffin — used as an additional component to prevent moisture from penetrating the pores of the wood.

Special substances and formulations based on them are also used to protect wood from burning — flame retardants.

Complex preparations are now being produced that combine antiseptic properties with fire protection.

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