Registration Dossier

Administrative data

Hazard for aquatic organisms

Freshwater

Hazard assessment conclusion:
no data available: testing technically not feasible

Marine water

Hazard assessment conclusion:
no data available: testing technically not feasible

STP

Hazard assessment conclusion:
no data available: testing technically not feasible

Sediment (freshwater)

Hazard assessment conclusion:
no data available: testing technically not feasible

Sediment (marine water)

Hazard assessment conclusion:
no data available: testing technically not feasible

Hazard for air

Air

Hazard assessment conclusion:
no hazard identified

Hazard for terrestrial organisms

Soil

Hazard assessment conclusion:
no data available: testing technically not feasible

Hazard for predators

Secondary poisoning

Hazard assessment conclusion:
no potential for bioaccumulation

Additional information

Sodium hydride is a strong base which reacts nearly spontaneously when exposed to water forming sodium hydroxide.

Thus available data for sodium hydroxide should be acceptable instead of conducting new studies.

Conclusion on classification

No aquatic toxicity data are available for Sodium hydride due to the potential for the compound to react with water. Sodium hydride is a strong base which reacts nearly spontaneously when exposed to water forming sodium hydroxide. Thus available data for sodium hydroxide should be acceptable instead of conducting new studies.

Based on the results of the ecotoxicity studies, its dissociation in the environment and lack of bioaccumulation, NaOH is not classified for the environmental compartment.