Evidence regarding the starter chemical, small residues of which can be found in polycarbonate and epoxy can coatings, is under review by EFSA. A final scientific opinion will be delivered by its food contact panel in September.

A spokesman said: "On their deliberations to date, panel members would maintain the current TDI."

The panel is understood to be reviewing some 800 studies on BPA, including the so-called Stump study. This examined potential developmental and neurotoxological impacts in low-dose exposure to BPA. The study was a key element in a recently-introduced temporary ban in Denmark. This ban applies to food-contact applications where children under three are likely to be exposed.

EFSA said: "The study did not provide evidence of BPA affecting neurobehavioural endpoints included in the study design. In its discussions so far, the panel also ruled out the possibility of a low-dose effect on learning ability as expressed in the Danish risk assessment."

At industry association PlasticsEurope, communications manager for the polycarbonate/BPA group, Jasmin Bird said: "EFSA's preliminary statement is a confirmation of its own and other authorities' previous assessments, which concluded that consumers can safely use BPA-based materials in food contact."

Campaigners, including some non-governmental organisations, have been calling for either a complete ban on BPA or a dramatic reduction in the TDI.

l See also our report on p27.