Checking the NAOH from Loja Quimica.

The top of the solid (S1) absorbed water from air creating a thin liquid layer with a light brick orange suspended ppt. 

Heated the beaker again; boiled at over 145 C (off therm scale).

Placed drop of (S1) on aluminum foil (S3).

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In erlen (tare 75.67 g) placed 10.00 g NaOH.(H2O)x, flakes, and 15 g of water at 33 C.  Temperature rose to 75 C in spite of cold erlen.

Reweighted when boiling at 118 C: 22.84 g (lost 2.16 g).

Boiled some more, forgot to note temp.  Weight 21.90 g (lost 3.10 g?).

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