Hierarchy classification:

1. top of the aat hierarchies
2. Materials Facet
3. Materials (hierarchy name)
4. materials (substances)
5. [materials by property]

Narrower term/s

• acetic acid[+]
  • vinegar
  • EDTA
• carbolic acid[+]
  • thymol
• fatty acid[+]
  • stearic acid
• hydrochloric acid[+]
  • aqua regia
• hydrofluoric acid
• nitric acid
• sulfuric acid
• phosphoric acid
• tannin
• pickle
• boric acid
• citric acid
• amino acid[+]
  • glycine
  • cysteine
  • cystine
• oxalic acid
• formic acid
• nucleic acid[+]
  • DNA [+]
    • ancient DNA
  • RNA
• alpha-lipoic acid
• acrylic acid
• silicic acid
• lactic acid
• carminic acid
• uronic acid
• gallic acid
• hydrogen fluoride [NP]
• adipic acid
• phytic acid

Anotations

Scope note:

Large class of electrolytic chemical substances that are capable of donating a hydrogen atom. Acids are classified as strong or weak depending on the concentration of hydrogen ion produced on ionization. Acids exhibit one or more of the following characteristics: has a sour or sharp taste; forms an aqueous solution with a pH of less than 7.0; turns litmus dye red; reacts with bases and some metals to form salts; or reacts with a metal carbonate to release carbon dioxide.