Abstract
The project “Acid Oxalic Solution Vanishing Blood Stain on Clothes”, its objective is to study acid oxalic in the juice of Piper sarmentosum’s leaves and cleaning blood stain on clothes by using the juice of Piper sarmentosum’s leaves. The study is separated in to 3 experiments - 1. Experiment acid oxalic in the juice of Piper sarmentosum’s leaves by reacting with calcium hydroxide found out the white sediment of calcium oxalate. 2. Experiement acid oxalic in the juice of Piper sarmentosum’s leaves by reacting with silver nitrate found out the white sediment of silver oxalate. 3. Experiment by reacting with concentrate sulfuric acid found out that limewater was turbid.
The study vanishing blood stain on clothes by using the juice of Piper sarmentosum’s leaves at concentration rate at 1 to 10 by examine with two types of clothes - the first is half synthetic fabrics clothes and the second is muslin clothes. The result when compare with white rate testing bar, found out that the juice of Piper sarmentosum’s leaves can vanish the blood stain stuck on half synthetic fabrics clothes at level 1 on the bar white rate testing - still a few blood stain left over. The blood stain on muslin clothes can be vanished at level 2 on the bar white rate testing - still middle rate blood stain left over. This means that the juice of Piper sarmentosum’s leaves can vanish the blood stain on both types of clothes because acid oxalic can make a reaction with iron which it is blood’s component that can react blood stain removed from clothes.
Key Words : Oxalic acid in the Wild Betel Leafbush