An appeal has overturned the European Chemicals Agency’s (ECHA) request for additional animal toxicity testing on the automotive air-conditioning refrigerant 2,3,3,3-tetrafluoropropene (HFO-1234yf). ECHA requested that Honeywell, manufacturers of HFO-1234yf, conduct extended safety studies in rabbits. Honeywell countered that such studies would not provide the agency with the information they were looking for and that safety could be confirmed by analyzing the current data. ECHA's board of appeal has rulled that the requested test would oppose the ECHA’s responsibility under the Reach (registration, evaluation, authorisation and restriction of chemicals) regulation to ensure that animal tests are only undertaken as a last resort, and that any testing involves the minimum number of animals. Read more by following the link above.