Assertion: henna's ppd | /r/HasProperty | sulfate pentahydrate
Facets:
Source sentences:
text: The following materials were first obtained: resorcinol (meta-dihydroxybenzene)a; PPD, copper(II) sulfate pentahydrate, hydrochloric acid (1 M) and methanolb; hydrogen peroxide (30%)c; and screw cap vials (10 mL, 30 mL) and single-use plastic syringes from 1 mL to 10 mLd.