Sodium Fluoride








ESPI Metals

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Product Name:     Sodium Fluoride

Formula:              NaF

CAS Number:       7681-49-4




Hazardous Components:  Sodium Fluoride

Percent (%):                    0-100

OSHA/PEL:                       2.5 (F) mg/m3

ACGIH/TLV:                      2.5 (F) mg/m3




Boiling Point:                     1693 oC                                                  

Melting/Freezing Point:    992 oC

Specific Gravity:                2.55 gm/cc

Solubility in H2O:               4 gm/100 gm @ 18

Appearance and Odor:      White powder, odorless




Flash Point:  N/A

Autoignition Temperature:  N/E

Flammable LimitsLower:  N/E       Upper:  N/E

Extinguishing Media:  CO2, dry powder, water spray or regular foam.

Special Firefighting Procedures:  Firefighters must wear full face, self-contained breathing apparatus with full protective clothing to prevent contact with skin and eyes.  Fumes form fires are hazardous.  Isolate runoff to prevent environmental pollution.

Unusual Fire & Explosion Hazards:  When burned, hazardous products of combustion including fumes of carbon monoxide, carbon dioxide, and fluorine can occur.  Avoid breathing fumes from fire exposed material.  Avoid needless exposure to gas, fume or vapor.  If practical, remain upwind when approaching a fire outdoors, even when wearing a corrosive and/or toxic gases.  Some of these materials may burn, but none ignite readily.  Containers may explode when heated.




Effects of Exposure:

Long-term overexposure to fluorides results from excessive deposition in bone which is the primary target organ.  Dental fluorosis typically results in staining and pitting of teeth in humans with fluoride concentrations in the drinking water greater than 2 ppm.  At higher fluoride levels in the drinking water (greater than 10 ppm), skeletal fluorosis and osteosclerosis have been observed.  Epidemiology studies of human populations exposed to fluoride in the drinking water have not shown any evidence for an increase in cancer or birth defects. Fluoride is readily absorbed in the lungs from inhalation and in the gastrointestinal tract.  Both uptake in bone and urinary excretion are rapid processes.  Daily retention in bone of increased amounts of fluoride intake is estimated to be 50%.  If intake is reduced, a two-phase resorption of fluoride from bone occurs with a rapid process on the order of weeks and a slower phase with a half-life of 8 years.

Acute and Chronic Effects:

Inhalation and skin contact are expected to be the primary routes of occupational exposure to sodium fluoride.  Based on single exposure animal tests, sodium fluoride is considered to be moderately toxic if swallowed, no more than slightly toxic if absorbed through the skin, slightly irritating to skin and corrosive to eyes.  Severe or repeated exposure may cause kidney damage and bone effects including joint pain, tooth erosion and discoloration.  Workers with kidney disease should limit exposure to this material.

Target Organs:  Eyes, skin, kidney, liver, lung, bone.




INHALATION:  Remove to fresh air.

INGESTION:  Induce vomiting immediately by medical personnel.  Get medical attention.  Call a Poison Control Center.  Never give anything by mouth to an unconscious person.

SKIN:  Flush the area with plenty of water.  Remove contaminated clothing and shoes.  Wash clothing before reuse.  Get medical attention.  Thoroughly clean shoes before reuse.

EYE:  Immediately flush with plenty of water for at least 15 minutes.  Get medical attention immediately.




Stability:  Stable

Conditions to Avoid:  N/A

Incompatibility (Material to avoid):  Contact with acids or water may result in a low energy release.

Hazardous Decomposition Products:  None known

Hazardous Polymerization:  Will not occur.




Steps to Be Taken in Case Material Is Released or Spilled:  Stop the leak if you can do so without risk.  Ventilate the space involved.  Fully encapsulating, vapor protective clothing should be worn for spills and leaks with no fire.  Do not touch or walk through spilled material.  Prevent entry into waterways, sewers, basements, or confined areas.  Avoid generation of dusts.  Remove from spill location.  Decontaminate area.

Waste Disposal Method:  Dispose of in accordance with Federal, State and Local regulations.




Respiratory Protection:  NIOSH approved dust-fume-mist cartridge respirator.

Ventilation:  Use local exhaust to maintain concentration of exposure below PEL, TLV.  Use adequate ventilation.

Protective Gloves:  Polyvinyl chloride, natural rubber, polyethylene.

Eye Protection:  Chemical goggles.

Other Protective Clothing or Equipment:  Protective gear suitable to prevent contamination.




Precautions to Be Taken in Handling and Storage:  Do not get in eyes, on skin or on clothing.  Avoid breathing dust.  Do not taste or swallow.  Use only with adequate ventilation.  Keep container closed.  Wash thoroughly after handling.  This material is not hazardous under normal storage conditions, however, material should be stored in closed containers, in a secure area to prevent container damage and subsequent spillage.

Work Practices:  Implement engineering and work practice controls to reduce and maintain concentration of exposure.  Use good housekeeping and sanitation practices.  Do not use tobacco or food in work area.  Wash thoroughly before eating or smoking.  Do not blow dust off clothing or skin with compressed air.  Maintain eyewash capable of sustained flushing, safety drench shower and facilities for washing.



The above information is believed to be correct, but does not purport to be all inclusive and shall be used only as a guide.  ESPI shall not be held liable for any damage resulting from handling or from contact with the above product.


Issued by:             S. Dierks

Date:                    August 1997