# Is Acetanilide toxic to fish?

I understand that acetanilide can hydrolyze to aniline and assume that will happen if that gets added to an aquarium, thus causing toxicity?

I have a solution that is $3\%$ hydrogen peroxide and $0.25\%$ acetanilide that I'd like to add to my fish and shrim aquarium to kill some algae.

• If there is any miracle mixture of chemicals that would kill algae but not fish, then I'm sure that it is sold in aquarium stores. Rather than experimenting on your fish, I suggest you buy some commercial product if it is available. – MaxW Feb 16 '16 at 7:27

## 1 Answer

When I checked the SDS of acetanilide on Sigma-Aldrich website, I saw that it is harmful to aquatic life. So, there is no exception whether it is an alga or fish to kill. I suggest you not use acetanilide in the aquarium.