Assertion: osmium's use | /r/HasProperty | 1
Facets:
Source sentences:
text: (OH) 4 Use dissolving with hydrochloric acid, concentrating and being adjusted to pH with sig water is about 1, adds still kettle, is warming up to 50～90 ℃ gradually, adds 20%NaOH solution and 20% sodium bromate solution lentamente, RuO to be had 4 Behind the gas evolution, stop to add sodium hydroxide solution, continue to add sodium bromate solution up to no RuO 4