What Turns Litmus Paper Red
Acids turn sunflowers blue and bases turn sunflowers blue. If the pH value or pH value of a substance is less than 7 then it is acidic and if it is more than 7 then it is alkaline. 7 means that the fabric is neutral. Bases have oh or o at the end, while acids have cl, no3, etc.
Sunflower is a water-soluble compound derived from algae, especially Roquella tincturia. The CAS number of this compound is 1393926. It is often absorbed on filter paper. The solution obtained from a sheet of paper or water becomes a pH indicator (one of the oldest) used to test the acidity of the material. Blue litmus paper turns red under acidic conditions and red litmus paper turns blue under alkaline (i.e. alkaline) conditions, and changes color in a pH range of 4.58.3 (at 25 ° C). Neutral litmus paper is purple.  This compound contains 10 to 15 different colors (erythroline (or erythrolythamine), isolethylamine, espinolithine, leucorrhoea, and leucazolethylamine.