In Wrath of the Lich King it is item level 226, requires level 80 and sells to vendors for 7g 29s 40c. In MoP Classic it is item level 213, requires level 80 and sells to vendors for 7g 29s 40c.
Read from the World of Warcraft client build files (JournalEncounterItem, JournalEncounterCreature, Achievement) and the Blizzard Game Data quest API.
How Ablative Chitin Girdle Compares
Who It Suits
Plate is the armor type Death Knight, Paladin and Warrior wear. With Strength or Intellect, Ablative Chitin Girdle suits Arms, Fury and Protection Warrior; Holy, Protection and Retribution Paladin; Blood, Frost and Unholy Death Knight.
Similar Items
The 10 items nearest to Ablative Chitin Girdle (item level 35) in item level among Armor > Plate, Waist slot, from item level 32 to 39.
Blizzard numbers items as they are created, so the named items next to ID 39759 (39756 to 39764) were usually added in the same batch as Ablative Chitin Girdle: the same quest line, zone, vendor or reward set.