BEIJING — China's safety watchdog confirmed Saturday that toy beads recalled in the United States and Australia after sickening children contain a substance that can turn into the "date-rape" drug after ingested.

The toys, coated with the industrial chemical 1,4-butanediol, were made by the Wangqi Product Factory in Shenzhen, a city just over the border from Hong Kong, the General Administration of Quality Supervision, Inspection, and Quarantine said in a statement.

When ingested, the chemical metabolizes into the "date-rape" drug gamma hydroxy butyrate, also known as GHB, which can cause breathing problems, loss of consciousness, seizures, drowsiness, coma and death.

Millions of units of the popular toys, which are sold as Aqua Dots in the United States and as Bindeez in Australia, were recalled in those countries as well as Britain, Malaysia, Singapore and elsewhere this past week after children began falling sick from swallowing the toy's bead-like parts.

The recall is the latest in a slew of product quality scandals that has tarnished China's image as an exporter of reliable goods.