# Is adding the word “solution” necessary when listing the materials used in a synthesis?

I am editing a chemistry-related paper and the synthesis procedure described is as follows:

Then, 10 mL of the intermediate were mixed with 10 mL of 1% (w/v) VCPL and 2 mL of 0.1% (w/v) KPS.

I was wondering if one should add the word "solution" after the name of the ingredients as follows:

Then, 10 mL of the intermediate were mixed with 15 mL of a 2% (w/v) VCPL solution and 3 mL of a 0.2% (w/v) KPT solution.

I think that indicating a volume and a % (w/v) gives it away that you are referring to a solution containing the active ingredient, but should the word "solution" still be added?

Thanks.

• Perhaps the name of the solvent should be mentioned – Francis L. Jul 21 at 15:22

No, the repeated addtion of the word "solution" is not needed.

All you want here is to provide a measured quantity (e.g., volume), concentration of your reagent in the solvent, and inferred quantity (e.g., mmol). This may be reported in the following pattern, too:

"1-Cinnamyl-4-methylbenzene (4a): The compound 4a was synthesized from 1-methoxy-4-{[(2 E)-3-phenylprop-2-en-1-yl]oxy}benzene 2b ($$\pu{240.9 mg}$$, $$\pu{1.00 mmol}$$) with p-tolylmagnesium bromide 3a ($$\pu{1.4 mL}$$, $$\pu{1.1 M}$$ in THF, $$\pu{1.5 mmol}$$) in the presence of 1b ($$\pu{4.1 mg}$$, $$\pu{1 mol\%}$$) in $$\ce{Et2O}$$ ($$\pu{5 mL}$$) at room temperature for $$\pu{24 h}$$ ($$\pu{198.0 mg}$$, $$\pu{95\%}$$ yield, colorless liquid)."

(source: Hashimoto et al. in Molecules 2019, 24, 2296 (doi.org/10.3390/molecules24122296), section 3.2; open access publication.)

This pattern is seen for inorganic reagents like $$\ce{HCl}$$ dissolved in water, yet equally available in methanol, 1,4-dioxane, etc. (example); and organometallic reagents, e.g. butyllithium, methylmagnesium bromide.