I have 1 gram of Diphenylamine and want to make a 10,000 or
1000 ppm solution in methanol. How do I make this?

Answer Posted / suresh reddy.b

1 gram of DPA dissolved in 1000ml of methanol gives
1000ppm.it is ok in case of purity of DPA is 100 % if it is
50% it is 2 gram of DPA dissolved in 1000ml of methanol
gives 1000ppm.

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