This article introduces that using mixed acid of nitric acid and sulfuric acid, beet waste-slag produces industrial product oxalic acid by ordinary pressure hydrocarbonylation.

本绍利用硝硫混常压氧化法，把甜菜废渣制成工业品草。

Oxalic acid is one of nature's most highly oxidized organic compounds, and the accumulation of oxalate in the body can cause various pathological disorders, including urolithiasis, hyperoxaluria, etc.

草是一种高毒性化合物，它在体内的蓄积可引起各种病理状态，结石、高草尿症等。