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Physical & Chemical properties

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Description of key information

C8-18 AAPB (lyophilized): organic, powdery solid at standard conditions
C12 AAPB (lyophilized): organic solid with spherical and porous particles

Key value for chemical safety assessment

Physical state at 20°C and 1013 hPa:
solid

Additional information

C8 -18 AAPB and C12 AAPB (lyophilized) are characterized as organic, powdery solid and as organic solid with spherical and porous particles. All AAPBs are similar in structure, contain all the same zwitterionic structure. They differ, however, by their carbon chain length distribution and the degree of unsaturation (<= 20%) in the fatty acid moiety. The content of minor constituents in all products are comparable and differ to an irrelevant amount. Based on the available data, it can be assumed that chain length distribution and degree of unsaturation of the fatty acid chain have no or at the most a minor impact on this endpoint.