How to wash off ink stains on clothes?

It can be removed with oxalic acid. You can buy a bottle of bleach for white cats in the supermarket, soak your clothes for a day before washing them, or you can use the kind that won't fade. If the clothes are stained with ink, you can rinse them with water first, and then rub them with milk, so that the ink can be removed. If it is white clothes, just use bleach; If it is a color, it can be completely soaked in clear water, and then a few grains of rice can be kneaded. In addition, oxalic acid can also remove ink. I heard that milk is also effective, but it has never been used. Wipe it clean with rice. 2, red ink traces: first use detergent, then wash with 20% alcohol, and finally wash with water. Wipe with 0.25% potassium permanganate solution or remove traces of red ink. 3. Ball-point pen oil stain: soak the stain in warm water at 40℃, wipe it with benzene or acetone, and then clean it with detergent to remove it. How happy I am to wash away the stains and put on new clothes. "Pa, the ink bottle spilled on the ground, and the ink splashed on the new clothes. How to clean it? Ink, fruit juice, engine oil and ballpoint pen oil are inevitably stained on our clothes. If you put all the stains in the washtub, sometimes it will not be cleaned, but will enlarge the stains. The chemical composition of stains is different, and the temper is also very different. Sweaty vest can't be washed with hot water. Clothes containing iodine should be soaked in hot water before washing. Textiles stained with engine oil should be wiped with gasoline and ironed with an iron to drive out the engine oil while it is hot. It turns out that sweat contains a small amount of protein. Egg white is a kind of protein. Egg whites solidify easily in hot water. Protein in sweat, like egg white, solidifies rapidly in boiling water and is entangled with fibers. Sweaters that could have been washed clean with cold water will turn yellow if washed with hot water. Soak clothes in cold water first, which is the advantage. Unlike protein, iodine and engine oil do not have the problem of solidification when heated, but heat can help them get rid of fibers. If clothes are stained with pure blue ink, red ink and watercolor pigments, wash them with detergent immediately, and then rinse them with clear water several times, which can often be cleaned. This is because they are all made of dyes dissolved in water. If there is any trace left, it is that the dye and fiber are combined and can only be removed with bleaching powder. The main component of bleaching powder is calcium hypochlorite, which is decomposed into hypochlorous acid in water and is a strong oxidant. It can oxidize dye molecules and turn dyes into colorless compounds, which is bleaching. Blue and black ink, blood, juice, rust and other stains are different. They are gradually oxidized in the air and become darker and darker. It's not good to oxidize them with bleach. For example, blue-black ink is an aqueous solution of ferrous tannic acid and blue dye. Ferrous tannic acid is colorless, so the words written in blue-black ink are blue. After contacting with air on paper, it gradually oxidizes and becomes water-insoluble ferrous tannic acid. Iron acetate is black, so the handwriting gradually turns from blue to black, insoluble in water and never fades. To remove this ink mark, you have to turn it into a colorless compound. Colorless crystals of oxalic acid are dissolved in warm water to scrub ink marks, and black iron rubbing acid combines with oxalic acid to form colorless substances, which are dissolved in water. It should be noted that oxalic acid is corrosive to clothes and should be washed as soon as possible. Blood contains protein and hemoglobin. Like washing sweatshirts, washing blood stains should be soaked in cold water first, and then washed with enzyme washing powder. The old blood turned dark brown because the iron in hemoglobin was oxidized in the air and rust was generated. Fruit juice also contains iron, which will also produce brown iron rust spots when it comes into contact with oxygen in the air. Therefore, stains caused by blood, fruit juice and rust can be washed off with oxalic acid, which turns rust into colorless substances and dissolves in water. Ink is made of very fine carbon particles dispersed in water and animal glue. The clothes were stained with ink, and carbon particles adhered to the gaps in the fibers. Insoluble in water, gasoline and other organic solvents, very stable. General oxidants and reductants can't do anything, and they can't stand any chemical changes. The ink of our ancestors' paintings and calligraphy has been preserved for thousands of years, dark and bright, and will never fade. This is a fact. The only way to remove ink stains is to rub them with rice grains mechanically and stick them on the fibers. If the ink is too thick and the anvil stains for too long, the carbon particles will drill into the depth of the fiber, which will be difficult to remove. If the stain is oily and does not touch water, such as ballpoint pen oil, paint and asphalt, we will "attack oil with oil". Wipe with a soft cloth or cotton yarn dipped in gasoline, so that oily color substances are dissolved in gasoline and then transferred to the wiping cloth. Sometimes gasoline can't be dissolved, so chemicals such as benzene, chloroform or carbon tetrachloride are used, which have stronger ability to dissolve oil. Washing away stains is the same as treating diseases, so it is necessary to prescribe the right medicine.