Water soluble oxalic acid powder best dissolve in warm water. Start with 20% to maximum 50% for full saturation. Prewet rust stains with water to allow capillary absorbtion to further the cleaning powder solution. Keep solution moist with damp tissue and under cover to dissolve rust and metal ions into ferrous oxalate. Bleaches weathered wood and stains to restore wood color. Removes rust from fabric, concrete and metal tools. Cleans masonry, limestone marble, stones, cement. Allow to soak for 10 minutes before scrubbing and flush with water. Prolong soaking might etch soft calcium carbonate marble and metal.
Bleaches wood, clean wood stains and other unpainted wood surfaces to be stained with wood dye or for varnishing. It lightens wood tone.
An acidic powder wear goggles and gloves. Keep away from children and pets. Flush with plenty of water if in contact.
