Inventory number 290 (violet)       

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Bottle Label Umber (burned) Chemical Name/Class Manganese oxide, iron oxide and clay Color Index Name k.A. Color Index Number Molecular Formula MnO2, Fe2O3 + Ton Company/Supplier: Source Date References: Wulf: Große Farbwarenkunde, Verlag Müller, Köln, H. Wulf (1967)

Material Type Pigment Origin Inorganic Color Brown Gloss None Brightness Medium Transparency Opaque Amount Very little Aggregate State Granulate Sensitivity to light No Toxicity Non-toxic Flammability Safety & Hazards

   

Container
Container Type	Bottle
Container Material	Glass
Container Stopper	Cork

Raman (Work in progress) Laser 532 nm: Laser 632.8 nm: Laser 785 nm:

Notes: