Product Name

  • Name

    BERYLLIUM OXYFLUORIDE

  • EINECS
  • CAS No. 63990-88-5
  • Density g/cm3
  • Solubility
  • Melting Point
  • Formula Be. 2 F H O
  • Boiling Point °Cat760mmHg
  • Molecular Weight 79.01
  • Flash Point °C
  • Transport Information
  • Appearance
  • Safety Confirmed carcinogen. Poison by ingestion, subcutaneous, intravenous, and intraperitoneal routes. See also BERYLLIUM COMPOUNDS and FLUORIDES. When heated to decomposition it emits very toxic fumes of BeO and F−.
  • Risk Codes
  • Molecular Structure Molecular Structure of 63990-88-5 (BERYLLIUM OXYFLUORIDE)
  • Hazard Symbols
  • Synonyms BERYLLIUM OXYFLUORIDE;BERYLLIUM OXYFLUORIDE,Be2OF2;(fluorooxy)beryllio hypofluorite;
  • PSA 9.23000
  • LogP 0.77200

Beryllium oxyfluoride Chemical Properties

IUPAC Name:  beryllium dihypofluorite
CAS NO: 63990-88-5   
Molecular Formula Beryllium oxyfluoride (CAS NO.63990-88-5): BeF2O2 
Molecular Weight: 79.0078   
H bond acceptors: 2
H bond donors: 0
Freely Rotating Bonds: 2
Polar Surface Area: 18.46 Å2
Molecular Structure:

Beryllium oxyfluoride Toxicity Data With Reference

Organism Test Type Route Reported Dose (Normalized Dose) Effect Source
guinea pig LDLo intraperitoneal 10mg/kg (10mg/kg)   National Institutes of Health, Bulletin. Vol. 181, Pg. 1, 1943.
mouse LDLo intravenous 3500ug/kg (3.5mg/kg) LIVER: OTHER CHANGES British Journal of Experimental Pathology. Vol. 30, Pg. 375, 1949.
mouse LDLo subcutaneous 5mg/kg (5mg/kg) LIVER: OTHER CHANGES British Journal of Experimental Pathology. Vol. 30, Pg. 375, 1949.
rat LD50 oral 146mg/kg (146mg/kg)   U.S. Atomic Energy Commission, University of Rochester, Research and Development Reports. Vol. UR-154, Pg. 1951,

Beryllium oxyfluoride Consensus Reports

IARC Cancer Review: Group 1 IMEMDT    IARC Monographs on the Evaluation of Carcinogenic Risk of Chemicals to Man . 58 (1993),p. 41.(World Health Organization, Internation Agency for Research on Cancer,Lyon, France.: ) (Single copies can be ordered from WHO Publications Centre U.S.A., 49 Sheridan Avenue, Albany, NY 12210) ; Human Sufficient Evidence IMEMDT    IARC Monographs on the Evaluation of Carcinogenic Risk of Chemicals to Man . 58 (1993),p. 41.(World Health Organization, Internation Agency for Research on Cancer,Lyon, France.: ) (Single copies can be ordered from WHO Publications Centre U.S.A., 49 Sheridan Avenue, Albany, NY 12210) ; Animal Sufficient Evidence IMEMDT    IARC Monographs on the Evaluation of Carcinogenic Risk of Chemicals to Man . 1 (1972),p. 17.(World Health Organization, Internation Agency for Research on Cancer,Lyon, France.: ) (Single copies can be ordered from WHO Publications Centre U.S.A., 49 Sheridan Avenue, Albany, NY 12210) ; Animal Sufficient Evidence IMEMDT    IARC Monographs on the Evaluation of Carcinogenic Risk of Chemicals to Man . 23 (1980),p. 143.(World Health Organization, Internation Agency for Research on Cancer,Lyon, France.: ) (Single copies can be ordered from WHO Publications Centre U.S.A., 49 Sheridan Avenue, Albany, NY 12210) ; Animal Sufficient Evidence IMEMDT    IARC Monographs on the Evaluation of Carcinogenic Risk of Chemicals to Man . 58 (1993),p. 41.(World Health Organization, Internation Agency for Research on Cancer,Lyon, France.: ) (Single copies can be ordered from WHO Publications Centre U.S.A., 49 Sheridan Avenue, Albany, NY 12210) . Beryllium and its compounds are on the Community Right-To-Know List.

Beryllium oxyfluoride Safety Profile

Confirmed carcinogen. Poison by ingestion, subcutaneous, intravenous, and intraperitoneal routes. See also BERYLLIUM COMPOUNDS and FLUORIDES. When heated to decomposition it emits very toxic fumes of BeO and F−.

Beryllium oxyfluoride Standards and Recommendations

OSHA PEL: TWA 0.002 mg(Be)/m3; STEL 0.005 mg(Be)/m3/30M; CL 0.025 mg(Be)/m3
ACGIH TLV: TWA 0.002 mg(Be)/m3; Confirmed Human Carcinogen; (Proposed: TWA 0.0002 mg(Be)/m3 (sensitizer); Confirmed Human Carcinogen)
NIOSH REL: (Beryllium) CL not to exceed 0.0005 mg(Be)/m3

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