Registration Dossier

Administrative data

Hazard for aquatic organisms

Freshwater

Hazard assessment conclusion:
no hazard identified

Marine water

Hazard assessment conclusion:
no hazard identified

STP

Hazard assessment conclusion:
no hazard identified

Sediment (freshwater)

Hazard assessment conclusion:
no hazard identified

Sediment (marine water)

Hazard assessment conclusion:
no hazard identified

Hazard for air

Air

Hazard assessment conclusion:
no hazard identified

Hazard for terrestrial organisms

Soil

Hazard assessment conclusion:
no hazard identified

Hazard for predators

Secondary poisoning

Hazard assessment conclusion:
no potential for bioaccumulation

Additional information

In a GLP, guideline transformation/dissolution test performed at loading rates of 1, 10 and 100 mg/L and pH 6 gold showed no dissolution above the Limit of Detection of 0.3 µg/L after 7 and 28 days (Brouwers 2012).

Conclusion on classification

Acute classification under CLP / GHS

Gold showed no dissolution above the Limit of Detection of 0.3 µg/L after 7 days in a GLP, guideline transformation/dissolution test performed at loading rates of 1, 10 and 100 mg/L and pH 6. The quantities of gold which are released into solution from gold metal during a transformation/dissolution test are diminishingly small (<0.3 µg/L) and it is unlikely to be possible to determine the speciation of any dissolved metal. Therefore, it is considered that no acute hazard is presented to environment from gold and, according to ECHA guidance, gold should not be classified for acute hazard.

 

Chronic classification under CLP / GHS

Similar to the results of 7-day T/D testing, the results of 28-day T/D testing at loading rates of 1, 10 and 100 mg/L were also below the analytical limit of detection (0.3 µg/L). The quantities of gold which are released into solution from gold metal during a transformation/dissolution test are diminishingly small (<0.3 µg/L) and it is unlikely to be possible to determine the speciation of any dissolved metal. Therefore, it is considered that no chronic hazard is presented to environment from gold and, according to ECHA guidance, gold should not be classified for chronic hazard.