A lessening bleach performs by converting double bonds within the chromophore into solitary bonds. This eliminates the ability in the chromophore to soak up visible light.[49] At the conclusion of the 19th century, lead white was however the preferred pigment; but in between 1916 and 1918, chemical providers in Norway https://www.propanraya.com/warna-putih-untuk-interior-yang-bersih-dan-elegan-pilihan-tepat-dengan-cat-eco-emulsion-ee-4010