Taipei-Beverage lids recently imported from China and intended for popular coffee chain Starbucks in Taiwan have been found to contain an excessive level of chemical residue, the Food and Drug Administration (FDA) said Thursday.
The residue was identified to be n-Heptane, a solvent which is commercially available as mixed isomers for use in paints and coatings.
A sample of the coffee chain's disposable lids showed that they contained 37 parts per million (ppm) of n-Heptane, higher than the allowed standard of below 30ppm, according to the FDA.
A total of 3,240 kilograms of the imported item from China have been returned to the original supplier and banned from entering Taiwan, according to the FDA, which published Thursday a list of 25 imported items that that have failed safety inspections.
According to Yen Tzung-hai (???), head of the Clinical Toxicology division under the Department of Nephrology at Linkou Chang Gung Memorial Hospital, an excessive exposure of 1,000ppm to n-heptane vapors for more than 15 minutes can cause dizziness, headache, nausea, and unconsciousness.
In some cases, gastrointestinal discomfort and dermatitis can also be observed in patients who consumed drinks tainted by the substance.
Source: Focus Taiwan News Channel