Included in the list are such biological products as urea, salicylic acid, starch, glue and egg shells.
If salicylic acid is present the mixture will be purple or violet.
The presence of salicylic acid gives a purple or violet color.
If salicylic acid is present, there will be a purple coloration.
salicylic acid, made from willow bark, prevents change and arrests decay, and it is an important medical agent as well.
Her talk these days was of formaldehyde, benzoate of soda, and salicylic acid.
It is generally conceded that the presence of salicylic acid in amounts more than traces is deleterious.
salicylic acid and its salts have long been used in medicine.
This test cannot be used if salicylic acid was used as a preservative in the original product.
The substances most frequently utilized are salicylic acid, formaldehyde and boracic acid.