cobalt pigment

Dumped what remained of (ME1xb) on a paper filter, (ME1xc).  Was ~0.5 mL of liquid (2 phases?) with a suspn of black flaky ppt.  Washed the test tube with H2O, dumped into (MG0) (basic residues).

Tube (ME1xa) stillhad ~1 mL ethanolic liq over ~0.5 mL black sticky ppt.  Pipetted out the liq into (ME1p) (ethanolic extracts) and added 4 mL H2O.  Result was a suspn of a black ppt. The back crust that was stuck to the tube walls came lose too.

Meanwhile (ME1a) and (ME1aa) became (clear liq with very slt yellow fog) + (yellowish gray ppt).  The ppt was darker in (ME1a).

Decanted (ME1pq) to (ME1pr) rinsing the filter paper bits with some H2O. Added 1 mL of HAc?? to both.

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