{"@type": "dcat:Dataset", "accessLevel": "public", "accrualPeriodicity": "irregular", "bureauCode": ["006:55"], "contactPoint": {"fn": "Elizabeth Rasmussen", "hasEmail": "mailto:elizabeth.rasmussen@nist.gov"}, "description": "Speed of sound and density measurements for difluoromethane. Speed of sound was measured in the liquid phase using a dual-path pulse-echo instrument at temperatures between 230 and 345 K, with pressures from 2.1 to 70 MPa. Vapor-phase density was measured using a dual-sinker densimeter instrument at temperatures from 240 to 340 K and pressures from 0.1 to 1.61 MPa.", "distribution": [{"description": "A readme file to accompany the data", "downloadURL": "https://data.nist.gov/od/ds/mds2-2554/README.docx", "mediaType": "application/vnd.openxmlformats-officedocument.wordprocessingml.document", "title": "README"}, {"downloadURL": "https://data.nist.gov/od/ds/mds2-2554/Difluoromethane_Density_Data-updated.txt", "mediaType": "text/plain", "title": "Difluoromethane Density Data"}, {"downloadURL": "https://data.nist.gov/od/ds/mds2-2554/Difluoromethane_SOS_Data-updated.txt", "mediaType": "text/plain", "title": "Difluoromethane Speed of Sound (SoS) Data"}, {"downloadURL": "https://data.nist.gov/od/ds/mds2-2554/Propane_SOS_Data-updated.txt", "mediaType": "text/plain", "title": "Propane Calibration Data"}], "identifier": "ark:/88434/mds2-2554", "issued": "2023-01-04", "keyword": ["DFM", "Density", "HFC-32", "Material property", "R-32", "Reference data", "Speed of Sound", "low-GWP"], "landingPage": "https://data.nist.gov/od/id/mds2-2554", "language": ["en"], "license": "https://www.nist.gov/open/license", "modified": "2022-02-23 00:00:00", "programCode": ["006:045"], "publisher": {"@type": "org:Organization", "name": "National Institute of Standards and Technology"}, "theme": ["Materials:Materials characterization", "Physics:Thermodynamics", "Standards:Reference data"], "title": "Speed of Sound and Density of Difluoromethane"}