Plaster-based material including an agent capable of trapping formaldehyde

A gypsum plasterboard, comprising:

• at least one agent selected from the group consisting of compounds comprising active methylene(s), sulphites, tannins and their mixtures,
• wherein the at least one agent is capable of reacting with formaldehyde,
• wherein, if the at least one agent comprises a compound comprising active methylene(s), then the compound comprising active methylene(s) is of formula (I):
• wherein:
• R1 and R2 are each a hydrogen atom, a C1-C20 alkyl radical, an amino radical, or a radical of formula
• R4 is a radical
• R5 is H or —CH3,
• p is an integer of from 1 to 6,
• R1 is an amino radical, R2 is an amino radical, or both R1 and R2 are amino radicals,
• R3 is a hydrogen atom, a C1-C10 alkyl radical, a phenyl radical, or a halogen atom,
• a is 0 or 1,
• b is 0 or 1, and
• n is 1 or 2.