- 
  
    Federal
NIST Chemistry WebBook - SRD 69
National Institute of Standards and Technology —
The NIST Chemistry WebBook provides users with easy access to chemical and physical property data for chemical species through the internet. The data provided in the... - 
  
    Federal
NIST Chemistry WebBook - SRD 69
Department of Commerce —
The NIST Chemistry WebBook provides users with easy access to chemical and physical property data for chemical species through the internet. The data provided in the...