... South Arica, Brazil, China, Korea, India, Russia, Ukraine ... Copper nitrate, in combination with acetic anhydride, is an effective reagent for ... metal nitrates are effective reagents for nitration. Hydrated copper nitrate absorbed onto clay affords a reagent called "Claycop". The ... 03-0.05 ≤0.01 ≤0.01We have strong technical capabilities, and have established long-term cooperative relationships with ...