Words to Describe hardeners

How hardeners often is described ("________ hardeners")

• acidic
• organic
• catalytic
• acid
• solid
• certain
• most
• type
• various
• many
• called
• amine
• latent
• several
• reactive
• containing
• potent
• common
• normal
• conventional
• proprietary
• suitable
• isocyanate
• appropriate
• active
• commercial
• metallic
• chemical
• liquid
• based
• aromatic
• separate
• aliphatic
• effective
• possible
• volatile
• typical
• different
• special
• concrete
• other
• polyamine
• multiple