cobalt pigment

Filtering (ME67s), 20 um paper, washed with ~5 mL (H1) and ~15 mL ethanol 46%:

* (ME96) ppt; contains extraneous carbonates.

* filtrate merged into (MEF1g)

Added 5 mL HAc to (ME1z); still green but cloudy?  Heating.  Added +2 mL HAc.  Formed a fluffy sticky bluish grey ppt that stuck to walls. (Cellulose?) Color became light tan cloudy.

Merged (ME95) into (ME93) ("cobalt oxide" neutral).

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