25 September, 2019
Dolphin Bay adds copper azole to product range
Bay has added copper azole to its range of
wood preservative products, offering
customers an even broader choice and
increasing their opportunities to export.
chromated copper arsenate (CCA) remains the
most effective solution, we wanted to offer
our customers a wider choice, should the
need arise for an alternative rather than
traditional preservatives," said Bertus.
azole is widely used in Europe, the United
States and Australia for structural
purposes. The market in Africa is relatively
small due to the high cost premium in
comparison to existing preservatives, with
only a few countries using alkaline copper
quaternary (ACQ) and copper azole.
azole is widely used in Europe, the
United States and Australia for
general appearance of wood treated with
copper azole is similar to CCA, as both
preservatives give the wood a slightly green
colouration. Copper azole is fairly similar
to ACQ in its chemical composition. Both
products are dissolved in the chemical
reaction, but while ACQ uses a quaternary
ammonium compound, copper azole augments the
dissolved copper preservative with an azole.
found that copper azole is not as effective
as CCA for certain applications. In heavy
load-bearing conditions, it has a relatively
high failure rate. Nevertheless, it is a
good alternative for H2 and H3 structural
timber," said Bertus.
copper azole added to our product offering,
Dolphin Bay now has the largest variety of
water-based wood preservatives in South
Africa, our range also including CCA, two
types of ACQ and boron.
Should this spark your interest, we
would be pleased to share with you the
comparative benefits and costs of various
preservatives, and the ways in which
treatment plants should be modified to use
Source: Dolphon Bay Chemicals