What is the main component of the ink about the composition of the ink

1, blackened and long-lasting components: mainly ellagic acid (C4H10O9), gallic acid (C7H6O5?H2O) and ferrous sulfate (FeSO4) and other components of the combination of each other to generate ferrous ellagic acid and ferrous gallate, oxidation of insoluble high-value iron, i.e., ellagic acid iron and gallic acid iron, the former to enhance the resistance to water, the latter to enhance the blackened nature of the ink, so that the ink resistance to water, blackening, color lasting and not fading The former enhances water resistance and the latter enhances blackening, thus making the ink water-resistant, blackening, and the color long-lasting.

2, pigment composition: currently in common use is the acidic ink blue and direct blue dyes, black water blue is the main color of ink, aqueous solution does not deteriorate in the presence of acid, but in the presence of alkali is changed to brown. Direct lake blue in the ink to play a role in color, due to which contains more impurities, should not be used more, in a humid environment prone to mold.

3, stabilizer: the purpose of adding stabilizer in ink, mainly to eliminate the precipitation of ink, so as not to write the phenomenon of water breakage. Commonly used stabilizers are sulfuric acid (HSO4), oxalic acid (COOH) 2, formaldehyde (HCHO) solution. These stabilizers have a certain acidity, to the paper acidification buried potential hazards, should not be used more.

4, anticorrosive agent: ink stabilizers added to have a strong acidic, in order to prevent corrosion, often add anticorrosive agent, so that it and iron into a film, reducing the corrosive effect of sulfuric acid 90%. So that the amount of iron in the ink will not increase due to corrosion of the nib, thus increasing the stability of the ink.

5, wetting agent: in order to prevent the evaporation of water in the ink, resulting in writing inconvenience, in the ink to add non-volatile and absorbent propylene glycol [C3H5 (OH) 3], so that the nib stays wet, in order to facilitate writing.

6, preservatives: ink raw materials contain organic matter and other substances, in a humid environment is prone to rot, mold, in order to prevent decay often add phenol or sodium pentachlorophenol and other agents as preservatives.