[mallesh.jubburu]

Hi to all ,
I had a problem with quantitative analysis of copper(1)acetate. I used to titrate it against 0.1M EDTA solution by using ammonia-ammonium chloride buffer and Eriochrome black-T as indicator. And the problem with end point only when I add Buffer  and indicator to the solution it  turns in to deep lavender color, so unable find out the end point . so please suggest me is there any  suitable for analysis of copper(1)acetate .

Thanks.
Mallesh.J