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-.
A base is a substance that produces hydroxide ions, OH -1, when it dissolves in water. NH. Bronsted and Lowry Acids and Bases. An acid is the species (molecule or ion) that donates a proton to another species in a proton-tranfser reaction.ASE. -a compound that increases the concentration of hydroxide ions (OH -1) when dissolved in water. -any species that can accept a proton (H +1). -base formulas are written with the hydroxide ion at the end of the formula.