Manganese Trihydrate

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Manganese Trihydrate is an upgrade material in Arknights.

Item description
A metal ore used for metallurgy. Can be used for a variety of upgrades and the synthesis of D32 Steel.

A precious metal which few companies are willing to use to produce industrial catalysts. The catalyst made from it, however, has an extremely long service life. It can be used repeatedly and even stripped and recycled, but the complicated processes have forced many companies to give up.


The second of the Manganese-type upgrade materials, Manganese Trihydrate is a product of further processing of Manganese Ore. Despite of remaining dangerous when handled incorrectly and the delicate processing, Manganese Trihydrate is important for Operator skill Mastery training and the Elite 2 promotion of 5★ and 6★ Operators.

Due to the great corrosion resistance of manganese, the Manganese Trihydrate is an important material for the synthesis of D32 Steel.



Manganese Trihydrates are available in:

  • Distinctions Store (sometimes) for 10 Distinction Certificate icon.png.
  • Headhunting Parametric Model Store for 80 Headhunting Parametric Model icon.png.

Special drops

Operation Sanity Drop rate
4-7 18 Very Rare (~4%)
6-2 18 Very Rare (~3%)
R8-10 18 Very Rare (~3%)
9-15 18 Very Rare
10-7 21 Very Rare
13-11 24 Very Rare
13-20 21 Very Rare


Product Material(s) LMD Morale Requires
Manganese Trihydrate.png
Manganese Ore
Polyester Pack
Loxic Kohl
300 4 Level 3 Workshop


  • Trihydrate is a suffix used for chemical compounds with three water molecules bound to it.

See also