Laboratory Preparation of Paint Using Copper Carbonate as the Pigment - Research Proposal Example

The solvent chosen must be one in which the binder is soluble and dries evenly. Most emulsion paints use water as the solvent while resin-based paints employ the use of mineral turpentine as the solvent.

Pigments are finely divided, and insoluble powders are dispersed in the paint that not only gives the paint its opacity and color but also helps to hold the paint together as well as protect the surface underneath from corrosion and weathering. Inorganic and organic substances are used as pigments with the inorganic ones being cheaper but with fewer clear colors. The tiny solid particles of pigments (≤ 1µm in diameter) enable them to refract light (light has wavelengths between 0.4µm and 0.7µm).1.

2 Procedure Material to be used: Sodium carbonate anhydrous Copper II SulfateThree 50 ml breaker vacuumcarbonate anhydrous  FilterWatch glass distilled water glass rodWeighing scaleMortar and PestleEgg yolkGlueLinseed oil1.2.1 Preparation of pigment (CuCO3)1- Weigh 0.858 g of sodium carbonate and put it in a clean 50 ml beaker 2- Add 5 mL of distilled water to the beaker 3- Stir and dissolve sodium carbonate in the water to make it saturated4- Weigh 1.292 g of anhydrous copper (II) sulfate and put it in another clean 50 ml beaker 5- Add 5 mL of distilled water to the beaker 6- Stir and dissolve anhydrous copper (II) sulfate in water to make it saturated7- Pour both solutions in a clean 50 ml beaker and stir 8- Perform Vacuum Filtration9- Place excess onto a watch glass.

Allow to dry until to be used in section 1.2.2The chemical reaction will be as follows: Na2CO3 + CuSO4 CuCO3 + Na2SO4The mass of the reactants and the product formed will be calculated using the formulae below = ______g of reagent form 1 g of CuCO3; Mass of CuSO4 that will react with Na2SO4 will be:(1 g/1) × (1 mol/123.555g) = 8.094 × 10^-3 mol(8.094 × 10^-3 mol) × (159.609g/mol) = 1.292gMass of Na2CO3 that will react with CuSO4 will be:(1 g/1) × (1 mol/123.555g) = 8.094 × 10^-3 mol(8.

094 × 10^-3 mol) × (106g/mol) = 0.858 g1.2.2 Paint preparation 1- Grind pigment to make it fine using mortar and pestle2- Put equal amounts on 3 different watches glasses3-Mix the first portion of pigment with glue, the second portion with an egg yolk and the third portion with linseed oil4- Perform tests for paint quality test the paint:1- Use Atomic Absorption Spectrometer to determine the wavelength (verify whether the color range is accurate2-Observe paint for any bleeding3-Observe how long it takes for a set of paint to dry.