Assertion: lead nitrate | /r/CreatedBy | reaction of metallic lead
Facets:
value: commercially
type: MANNER
Source sentences:
text: It is produced commercially by reaction of metallic lead with concentrated nitric acid in which it is sparingly soluble.  
text: It is produced commercially by reaction of metallic lead with concentrated nitric acid in which it is sparingly soluble.  
text: It is produced commercially by reaction of metallic lead with concentrated nitric acid in which it is sparingly soluble.