"weakly alkaline" is correct and usable in written English.
You would use this phrase when talking about a substance with a pH greater than 7, but not as high as the average alkaline substance. For example, you could say, "The soil in this area is weakly alkaline, with a pH of 8."
The pure substance is a colourless, flammable, weakly alkaline, water-soluble liquid with an unpleasant odour; it boils at 115.5° C (234° F).
Because of this, aqueous solutions of salts of hydrogen carbonates are weakly alkaline (basic) and are also active ingredients in many antacids.HCO3− + H2O ⇌ H2CO3 + OH− If equivalent amounts of sodium hydroxide and a solution of sodium hydrogen carbonate are combined and the solution is then evaporated, crystals of a hydrated form of sodium carbonate are formed.
The silica precipitation requires weakly alkaline condition for its precipitation.
In weakly alkaline conditions, DPBT can interaction with Hg2+and Cu2+athehe same time.
When the pH became weakly alkaline, the sedimentary environment became weakly reducing.
The oxidation of PPD with hydrogen peroxide in weakly alkaline solution resulted in the formation of insoluble products.
The area of expression is clearly smaller than the condensed mesenchyme weakly expressing alkaline phoshatase, indicating a reduced number of differentiated osteoblasts.
The passive behaviour of copper is examined in weakly acid and alkaline solutions.
The replacements were weakly dissolved in alkaline medium due to their high crystalline phase contents.
The poly ether ester)s were stable towards treatment at room temperature with water or weakly acidic or alkaline solutions.
Ferruginous minerals were derived from flocculent precipitates which formed as rivers flowed into the ocean, and chlorite formed in weak alkaline, weakly reducing environments with high hydrodynamic conditions.
