A gravimetric determination of tin is proposed with sodium cyclotetramethylenedithiocarbamate as precipitant at
pH 5.0–5.5. By optimizing the reaction conditions the theoretical conversion factor 0.1687 can be used for
determining ]5% of Sn. Its standard deviation (n10) at the level of 20 mg of Sn was found to be 0.08 mg. Effects
of diverse cationic species can be eliminated by a clear-cut group precipitation at pH 9 with DDTC in the presence
of tartrate and subsequent masking with EDTA. Provision is also made for removal of individual species in
occasional cases. Hence, the proposed method is flexible and versatile and was successfully applied to the
macro-determination of Sn in diverse alloys. © 1998 Elsevier Science B.V. All rights reserved.