Oxalic acid.
Chemicals as: acetone, silica gel, furfural, lanoline, antimony trioxide, ethylene glycol, caustic soda, sodium bicarbonate, potassium carbonate, stearic acid, selenium, tri-ethylene glycol, hexamine, phenol, magnesium chloride, hydrazine hydrate, potassium hydroxide, benzoic acid, mono-ethylene glycol, hydrogen peroxide, potassium iodide, phosphoric acid, sodium thiosulphate, poly-ethylene glycol, sodium carbonate, sodium tripolyphosphate, magnesium sulphate hept., oleic acid, sulphamic acid, calcium carbide, borax, trisodium phosphate, serium oxide, diammonium phosphate, iodine crystals, oxalic acid, barium carbonate, sodium sulphate, sod. Meta silicate, sod. Meta bisulphit, sod. Hexa meta phosphate, cyclo hexanone, zinc oxide.
