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         1. NIOSH Pocket Guide to Chemical Hazards
      Sodium fluoride (as F)
      Print
        Sodium fluoride (as F)
            Related Pages
                Synonyms & Trade Names
                  Floridine, Sodium monofluoride
                CAS No.
                  7681-49-4
                RTECS No.
                  WB0350000
                DOT ID & Guide
                  1690 154
                Formula
                  NaF
                Conversion
                IDLH
                  250 mg/m3 (as F)
                  See: fluoride
                Exposure Limits
                  NIOSH REL
                  TWA 2.5 mg/m3 [*Note: The REL also applies to other inorganic, solid fluorides (as F).]
                  OSHA PEL
                  TWA 2.5 mg/m3 [*Note: The PEL also applies to other inorganic, solid fluorides (as F).]
                Measurement Methods
                  NIOSH 7902 , 7906;
                  OSHA ID110
                  See: NMAM or OSHA Methods
                Physical Description
                  Odorless, white powder or colorless crystals. [Note: Pesticide grade is often dyed blue.]
                Molecular Weight
                  42.0
                Boiling Point
                  3099°F
                Melting Point
                  1819°F
                Solubility
                  4%
                Vapor Pressure
                  0 mmHg (approx)
                Ionization Potential
                  NA
                Specific Gravity
                  2.78
                Flash Point
                  NA
                Upper Explosive Limit
                  NA
                Lower Explosive Limit
                  NA
                  Noncombustible Solid
                Incompatibilities & Reactivities
                  Strong oxidizers
                Exposure Routes
                  inhalation, ingestion, skin and/or eye contact
                Symptoms
                  irritation eyes, respiratory system; nausea, abdominal pain, diarrhea; salivation, thirst, sweating; stiff spine; dermatitis; calcification of ligaments of ribs, pelvis
                Target Organs
                  Eyes, skin, respiratory system, central nervous system, skeleton, kidneys
                Personal Protection/Sanitation
                (See protection codes)
                Skin:Prevent skin contact
                Eyes:Prevent eye contact
                Wash skin:When contaminated
                Remove:When wet or contaminated
                Change:Daily
                First Aid
                (See procedures)
                Eye:Irrigate immediately
                Skin:Soap wash promptly
                Breathing:Fresh air
                Swallow:Medical attention immediately
                Respirator Recommendations
                NIOSH/OSHA
                Up to 12.5 mg/m3:
                (APF = 5) Any quarter-mask respirator.
                Click here for information on selection of N, R, or P filters.
                Up to 25 mg/m3:
                (APF = 10) Any particulate respirator equipped with an N95, R95, or P95 filter (including N95, R95, and P95 filtering facepieces) except quarter-mask respirators. The following filters may also be used: N99, R99, P99, N100, R100, P100.
                Click here for information on selection of N, R, or P filters.*
                (APF = 10) Any supplied-air respirator*
                Up to 62.5 mg/m3:
                (APF = 25) Any supplied-air respirator operated in a continuous-flow mode*
                (APF = 25) Any powered, air-purifying respirator with a high-efficiency particulate filter.*+
                Up to 125 mg/m3:
                (APF = 50) Any air-purifying, full-facepiece respirator with an N100, R100, or P100 filter.
                Click here for information on selection of N, R, or P filters.
                +
                (APF = 50) Any self-contained breathing apparatus with a full facepiece
                (APF = 50) Any supplied-air respirator with a full facepiece
                Up to 250 mg/m3:
                (APF = 2000) Any supplied-air respirator that has a full facepiece and is operated in a pressure-demand or other positive-pressure mode
                Emergency or planned entry into unknown concentrations or IDLH conditions:
                (APF = 10,000) Any self-contained breathing apparatus that has a full facepiece and is operated in a pressure-demand or other positive-pressure mode
                (APF = 10,000) Any supplied-air respirator that has a full facepiece and is operated in a pressure-demand or other positive-pressure mode in combination with an auxiliary self-contained positive-pressure breathing apparatus
                Escape:
                (APF = 50) Any air-purifying, full-facepiece respirator with an N100, R100, or P100 filter.
                Click here for information on selection of N, R, or P filters.
                +
                Any appropriate escape-type, self-contained breathing apparatus
                +Note: May need acid gas sorbent
                Important additional information about respirator selection
                See also
                INTRODUCTION ICSC CARD: 0951
      Page last reviewed: October 30, 2019
        Content source: National Institute for Occupational Safety and Health
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