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Chemical Sampling Information (CSI)
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General Description

Synonyms: Fluoride; Perfluoride

OSHA IMIS Code Number: 1280

Chemical Abstracts Service (CAS) Registry Number: 16984-48-8; Varies with compound

NIOSH Registry of Toxic Effects (RTECS) Identification Number: LM6290000

Physical and Chemical Properties: Varies depending on specific compound

Exposure Limits and Health Effects

Exposure Limit

Limit Values

HE Codes

Health Factors and Target Organs

OSHA Permissible Exposure Limit (PEL) - General Industry
See 29 CFR 1910.1000 Table Z-1

2.5 mg/m3
TWA

HE3

Skeletal fluorosis*

OSHA PEL - Construction Industry
See 29 CFR 1926.55 Appendix A

2.5 mg/m3
TWA

HE3

Skeletal fluorosis*

OSHA PEL - Shipyard Employment
See 29 CFR 1915.1000

2.5 mg/m3
TWA

HE3

Skeletal fluorosis*

National Institute for Occupational Safety and Health (NIOSH) Recommended Exposure Limit (REL)

Note: The REL is for sodium fluoride (as F) but also applies to other inorganic, solid fluorides (as F).

2.5 mg/m3
TWA

HE3

Skeletal fluorosis*

American Conference of Governmental Industrial Hygienists (ACGIH) Threshold Limit Value (TLV) (2001)

2.5 mg/m3
TWA

A4; BEI

HE3

Skeletal fluorosis*

HE14

Irritation of the eyes and respiratory system

CAL/OSHA PEL

2.5 mg/m3
TWA

HE3

Skeletal fluorosis*

HE14

Irritation of the eyes and respiratory system

*Osteosclerosis or increased bone density due to excessive absorption and retention of fluorides.

National Toxicology Program (NTP) carcinogenic classification: Not listed

International Agency for Research on Cancer (IARC) carcinogenic classification: Group 3 (not classifiable as to its carcinogenicity to humans [inorganic, used in drinking water])

U.S. Environmental Protection Agency (EPA) carcinogenic classification: Not listed

EPA Inhalation Reference Concentration (RfC): Not established

Agency for Toxic Substances and Disease Registry (ATSDR) Inhalation Minimal Risk Level (MRL): Not established

NIOSH Immediately Dangerous to Life or Health (IDLH) concentration: 250 mg/m3

Date Last Revised: 9/6/2012

Notes on Other Potential Health Effects and Hazards

  • Wheezing and chest tightness, airflow limitation, and decline in lung function have been noted with exposure to fluorides (Abramson et al. 2010).

Literature Basis

Monitoring Methods used by OSHA

Laboratory Sampling/Analytical Method:

  • sampling media: Mixed Cellulose Ester Filter (MCEF) 0.8 microns
    maximum volume: 90 Liters
    maximum flow rate: 1.5 L/min
    current analytical method: Ion Specific Electrode; ISE
    method reference: 2 (OSHA ID-110)
    sampling analytical error: 0.10
    method classification: Fully Validated
    note: Submit as a separate sample. If the filter is not overloaded, samples may be collected up to an 8-hour period. Hydrogen fluoride is collected on a Na2C03 impregnated backup pad.

Wipe Sampling Method:

  • sampling media: Whatman smear tab
    analytical solvent: Deionized water