The phase relations in the system of Ag and the high-temperature superconducting phase Bi 2 Sr 2 CaCu 2 O 8 (2212) are studied up to a Ag content of 50 mol percent in air. The most significant observation is that the temperature of the complete melting of 2212 decreases significantly from about 895°C to some 865°C with increasing Ag content. Therefore, at constant sinter temperature between 895°C and 865°C the amount of liquid in the sample depends significantly on the Ag concentration.