Typical Uses with Silicone Hoof PackingsCopper Sulfate Pentahydrate [CuSO4-5H2O] is a naturally-occurring inorganic salt. Besides pharmaceutical and various chemical applications, it is frequently used as a fungicide in agriculture to control bacterial and fungal diseases of fruit and some field crops. It is also used as an algaecide and an herbicide in irrigation and municipal water treatment systems.
WARNING: Copper Sulfate is moderately toxic upon acute oral exposure
and should be handled and treated as a strong irritant. It can be corrosive to
the skin and eyes. It is readily absorbed through the skin and can produce a
burning pain, along with the same severe symptoms of poisoning from ingestion.
Users of this material should acquaint themselves with the applicable MSDS
information before handling or using the chemical.
- Wear gloves when using materials containing copper sulfate!
- Wear a dust mask or respirator when using copper sulfate crystals or
powders. AVOID INHALATION!
Typical methods for using Copper Sulfate with Silicone Hoof Packings:
- Copper Sulfate is available from pharmaceutical, industrial, commercial and retail sources in different purities. Typical commercial purity is found in septic system
"Root Killer" - 99% copper sulfate and 1% inert materials.
- The crystal size in commercially available copper sulfate is usually larger than optimal for use in hoof packing applications. Large crystals do not have the high surface area to weight ratio that is best when used in combination with silicone packing applications for hoof packing…. you can fix that!
- To reduce the size of crystals a farrier could put a small quantity of
the material into a strong plastic “baggy” to contain it while crushing the
crystals to reduce them to a smaller size. Avoid creating or inhaling dust.
- To prepare hoof-packing material, first mix the copper sulfate crystals
with the white side of the 2-part silicone packing. The ratio should be
approximately 1:1 by volume (not weight). Wear gloves!
- To mix the silicone for hoof application, you will have to use about
1.5-2x the typical amount of the modified “white” material to get the right
mix properties with part “B” of the silicone. You have modified the “A” side
so it is no longer a conventional 1:1 mix ratio. Experiment with a small
amount of material. Wear gloves!
- Use the silicone packing as normal on the hoof. Collect the trimmings
and appropriately dispose of them.
What is Happening?
- Unlike commercially available urethane packing materials, Silicone Hoof
Packing is “gas permeable” when cured. Active materials entrained in
silicone packing will tend to chemically migrate to areas of lower
concentration; this would typically be at the surface of the silicone
packing. This action will be accelerated in moist or wet conditions. Since
the silicone packing material is supporting the sole or frog, the active
ingredients will be acting against those surfaces. Most typically, the
modified silicone packing will provide an anti-fungal action. In many cases
it will also exfoliate the sole leaving a clean fresh surface.