Immediately Dangerous to Life or Health Concentrations (IDLH)
CAS number: 62–74–8
NIOSH REL: 0.05 mg/m3 TWA, 0.15 mg/m3 STEL [skin]
Current OSHA PEL: 0.05 mg/m3 TWA [skin]
1989 OSHA PEL: 0.05 mg/m3 TWA, 0.15 mg/m3 STEL [skin]
1993-1994 ACGIH TLV: 0.05 mg/m3 TWA, 0.15 mg/m3 STEL [skin]
Description of substance: Fluffy, colorless to white (sometimes dyed black), odorless powder.
LEL: . . Noncombustible Solid
Original (SCP) IDLH: 5 mg/m3
Basis for original (SCP) IDLH: The chosen IDLH is based on the statement by Deichmann and Gerarde  that the probable lethal oral dose for an adult is 50 mg. No data on acute inhalation toxicity are available on which to base the IDLH for this highly toxic compound.
Short-term exposure guidelines: None developed
ACUTE TOXICITY DATA:
Lethal dose data:
|Species||Reference||Route||LD50(mg/kg)||LDLo(mg/kg)||Adjusted LD||Derived value|
|Lehman 1951McIlroy 1982
|12 mg/m2.4 mg/m
|1.2 mg/m30.24 mg/m3
Human data: The probable oral lethal dose has been reported to be 50 mg [Deichmann and Gerarde 1969]. [Note: An oral dose of 50 mg is equivalent to a worker being exposed to about 30 mg/m3 for 30 minutes, assuming a breathing rate of 50 liters per minute and 100% absorption.]
|Revised IDLH: 2.5 mg/m3Basis for revised IDLH: No inhalation toxicity data are available on which to base an IDLH for sodium fluoroacetate. Therefore, the revised IDLH for sodium fluoroacetate is 2.5 mg/m3 based on acute oral toxicity data in humans [Deichmann and Gerarde 1969].|
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