The list of deleterious materials has always remained fluid because as technology advances new products come onto the market and medical research establishes new risks to health. Clauses in contracts and appointment documents often refer to compliance with 'Good Practice in the selection of construction materials'.he list of deleterious materials has always remained fluid because as technology advances new products come onto the market and medical research establishes new risks to health. Clauses in contracts and appointment documents often refer to compliance with 'Good Practice in the selection of construction materials'.
Hydrogen peroxide is a weak acid. Generally, acids distinguishable by the hydrogen proton, while bases are generally anything with a hydroxide. For instance, hydrochloric acid, or HCl, can be distinguished by the H+ bonded with Cl-. NaOH on the other hand, is a bond between Na+ and OH-.
Conjugate Acid-Base Pairs. Acids and bases exist as conjugate acid-base pairs. The term conjugate comes from the Latin stems meaning joined together and refers to things that are joined, particularly in pairs, such as Brnsted acids and bases. Every time a Brnsted acid acts as an H+-ion donor, it forms a conjugate base. Imagine a generic acid, HA. When this acid donates an H+ ion to water, one product of the reaction is the A- ion, which is a hydrogen-ion acceptor, or Brnsted base.