periodic acid
Chemical term for the oxoacid of iodine; used in analytical and organic chemistry.
Periodic acid is used as a powerful oxidizing agent.
ヨウ素酸 (iodic acid) has iodine in a lower oxidation state (+5) compared to 過ヨウ素酸 (periodic acid, +7).
Standard modern spelling using ヨウ素 for iodine.
Older spelling using 沃素 for iodine; now largely replaced by ヨウ素.
Compound of 過 (per-) + ヨウ素 (iodine) + 酸 (acid), calqued from English 'periodic acid'.