General requirements for outgassing can be found in ECSS-Q-70-02C
Use of this search does not imply that a material listed here is ESA approved even if it is in the "Low Outgassing" section or is selected for TML or CVCM attributes less than a specified amount. Materials can have very different results depending on mix, cure, or changes in formulation over the years. Use of the ESA Outgassing Database is only a first step in fully researching the material of choice.