Per NCBI policies, PubChem data is freely usable including commercially. Strong for molecular/chemical scalars (MW, density, MP/BP for pure compounds). Redundant with NIST WebBook for liquids — use as cross-check.
Action: small enrichment script for liquids and pure-compound gases. Lower priority than Wikidata + NIST WebBook.
Per NCBI policies, PubChem data is freely usable including commercially. Strong for molecular/chemical scalars (MW, density, MP/BP for pure compounds). Redundant with NIST WebBook for liquids — use as cross-check.
Action: small enrichment script for liquids and pure-compound gases. Lower priority than Wikidata + NIST WebBook.