ABSTRACT
Dyes from Pterocarpus osun Craib and Lawsonia inermis Linn. were extracted
using ethanol and methanol respectively. The extracted dyes were subsequently
purified using chromatographic methods. Purified pigments were characterized
using Ultra-Violet Visible Spectrophotometer, Fourtier Transform Infrared
Spectrophotometer and Lovibond Tintometer. The UV spectra of the dyes in
petrol, kerosene and diesel showed presence of chromophores. The FTIR
spectra of the dyes showed presence of phenolic O-H stretching and C=C of
aromatic functional groups. The dye from Lawsonia inermis Linn. was
remarkably stable in colouring petrol for a period of twenty-eight days but not
in kerosene and diesel while the dye from Pterocarpus osun Craib was not
stable. Thus, dye from Lawsonia inermis Linn. can be used as alternative
source of colourant for petrol while the dye can not be used for the same
purpose for kerosene and diesel due to their instability. The dye from
Pterocarpus osun Craib cannot be used because of their instability. They are
not remarkably active in colouring any of the petroleum products (petrol,
kerosene and diesel).
MAXWELL, I (2021). Assessment Of Two Local Plant Dyes As Colourants For Petroleum Products (Petrol, Kerosene And Diesel). Afribary. Retrieved from https://afribary.com/works/assessment-of-two-local-plant-dyes-as-colourants-for-petroleum-products-petrol-kerosene-and-diesel
MAXWELL, ILOJEME "Assessment Of Two Local Plant Dyes As Colourants For Petroleum Products (Petrol, Kerosene And Diesel)" Afribary. Afribary, 05 May. 2021, https://afribary.com/works/assessment-of-two-local-plant-dyes-as-colourants-for-petroleum-products-petrol-kerosene-and-diesel. Accessed 26 Apr. 2024.
MAXWELL, ILOJEME . "Assessment Of Two Local Plant Dyes As Colourants For Petroleum Products (Petrol, Kerosene And Diesel)". Afribary, Afribary, 05 May. 2021. Web. 26 Apr. 2024. < https://afribary.com/works/assessment-of-two-local-plant-dyes-as-colourants-for-petroleum-products-petrol-kerosene-and-diesel >.
MAXWELL, ILOJEME . "Assessment Of Two Local Plant Dyes As Colourants For Petroleum Products (Petrol, Kerosene And Diesel)" Afribary (2021). Accessed April 26, 2024. https://afribary.com/works/assessment-of-two-local-plant-dyes-as-colourants-for-petroleum-products-petrol-kerosene-and-diesel