释义 |
DictionarySeehydrocolloidirreversible hydrocolloid
ir·re·vers·i·ble hy·dro·col·loida hydrocolloid the physical state of which is changed by an irreversible chemical reaction when water is added to a powder and an insoluble substance is formed.irreversible hydrocolloidA hydrosol of alginic acid whose physical state is changed by an irreversible chemical reaction, forming insoluble calcium alginate. This substance is called alginate or dental alginate. Alginate is used in dentistry as a primary impression material. Synonym: alginateCAUTION!Care should be taken not to inhale the dust created by alginate. See also: hydrocolloidir·re·vers·i·ble hy·dro·col·loid (irrĕ-vĕrsi-bĕl hīdrō-koloyd) A hydrocolloid the physical state of which is changed by an irreversible chemical reaction when water is added to a powder and an insoluble substance is formed. |