MERCURY (VAPOR)†

Chemical Identification
Chemical Identification
CAS # 7439-97-6
Formula

Hg

Synonyms

mercury metal: colloidal mercury; metallic mercury; Quicksilver; elemental mercury

Physical Properties
Physical Properties
Physical description An odorless, silvery metallic liquid.
Boiling point 674°F Molecular weight 200.6
Freezing point/melting point -38°F Vapor pressure 0.0012 mmHg
Flash point Vapor density
Specific gravity 13.6 (metal) Ionization potential
Lower explosive limit (LEL) Upper explosive limit (UEL)
NFPA health rating NFPA fire rating
NFPA reactivity rating NFPA special instruction
Vapor hazard ratio (VHR)
Historical exceedance percentage
Target organs
Monitoring Methods Used by OSHA
Monitoring Methods Used by OSHA
Analyte code (IMIS no.) 1631
Sampling group
Sampler/Sampling media Hydrar sorbent tube [SKC 226-17-1A]
Sampling time*
Sampling volume (TWA)*

90 L

Sampling flow rate (TWA)*

0.2 L/min

Sampling volume (STEL/Peak/C)*
 

3 L

Sampling flow rate (STEL/Peak/C)*
 

0.2 L/min

Analytical method instruments CVAA
Method reference OSHA ID-140 (fully validated)
Notes
 

Results are provided for the presence and amount or concentration of a specific element or elements. The stated identity of the actual sample contents (such as a specific form or compound) is based on the assumption that the material sampled is as identified by the compliance officer using available documentation of materials and processes. The physical form of a sample (dust, mist, or fume) is identified by the compliance officer using available documentation of materials and processes.

A pre-filter, consisting of a mixed cellulose ester filter in a polystyrene cassette, is used with the active sampler. The pre-filter assembly should be connected to the sampling tube with the minimum amount of Tygon tubing necessary. The filter of the sampler will be analyzed separately and reported as [(Aryl and Inorganic) (as Hg), analyte code M111] based on the collection of particulate Mercury. The Hydrar or Hopcalite sorbent material will be analyzed and reported as [Mercury (Vapor) (as Hg), analyte code 1631]. These two results could then be combined to evaluate the transitional limit of TWA total Mercury, 1 mg/10m³, (vapor and particulate). Passive air sampling not recommended.

Special requirements
 

 

* All sampling instructions above are recommended guidelines for OSHA Compliance Safety and Health Officers (CSHOs), please see the corresponding OSHA method reference for complete details.

Wipe Method
Wipe Method
Sampler/Sampling media
 

 

Bulk Method
Bulk Method
 

 

On-Site Screening Techniques
On-Site Screening Techniques
Device Detector tube Detector tube Detector tube
Model/Type Dräger - Mercury Vapour 0.1/b, CH23101 Gastec 40 Matheson-Kitagawa 8014-142S
Sampling information
(see manufacturer instructions)
1-40 strokes, 0.2-2 mg/m³ range, uncertainty approx 50% 0.5-5 strokes, 0.01-13.2 mg/m³ range, uncertainty 16%; for 0.25-2 mg/m³, 8% for 2-6 mg/m³ 1-5 strokes, 0.05-10 mg/m³ range
Exposure Limits
Exposure Limits
OSHA PEL
8-hour TWA
(ST) STEL
(C) Ceiling
Peak
NIOSH REL
Up to 10-hour TWA
(ST) STEL
(C) Ceiling
ACGIH TLV©
8-hour TWA
(ST) STEL
(C) Ceiling
CAL/OSHA PEL
8-hour TWA
(ST) STEL
(C) Ceiling
Peak
PEL-TWA
 

1 mg/10m³ (0.1 mg/m³)

REL-TWA
 

0.05 mg/m³

TLV-TWA
 

0.025 mg/m³ [1991]

PEL-TWA
 

0.025 mg/m³

PEL-STEL
 

 

REL-STEL
 

 

TLV-STEL
 

 

PEL-STEL
 

 

PEL-C
 

 

REL-C
 

0.1 mg/m³

TLV-C
 

 

PEL-C
 

0.1 mg/m³

Skin notation
 

Y

Skin notation
 

Y

Skin notation
 

Y

Skin notation
 

Y

Notes:
 

See 29 CFR 1910.1000 Table Z-2. Skin notation applies to OSHA Construction and Maritime Industries only. See 29 CFR 1926.55 Appendix A and 29 CFR 1915.1000 Table Z-Shipyards.

Notes:
 

 

Notes:
 

 

Notes:
 

 

Health factors:  See NIH-NLM PubChem. IDLH
 

10 mg/m³

Carcinogenic classifications: IARC-3, TLV-A4, EPA-D Notes:
 

 

AIHA emergency response planning guidelines - ERPG-1/ERPG-2/ERPG-3:
 

--/.025 ppm/0.5 ppm

Additional Resources and Literature References
Additional Resources and Literature References

NOAA: CAMEO Chemicals - Mercury

NIOSH: Pocket Guide to Chemical Hazards - Mercury compounds [except (organo) alkyls] (as Hg)

Literature References

 
  • EPA: Hazard Summary - Mercury
  • ACGIH: Documentation of the Threshold Limit Values (TLVs) and Biological Exposure Indices (BEIs) - Mercury [7439-97-6], all forms except alkyl, as Hg, Elemental and inorganic forms. See annual publication for most recent information.
  • ANSI: American National Standard Acceptable Concentrations of Inorganic Mercury and Non-Alkyl Organo Compounds. 1972.
  • ATSDR: Toxicological Profile for Mercury. 1999.
  • Chang, J.W., Chen, H.L., Su, H.J., Liao, P.C., Guo, H.R., Lee, C.C.: Simultaneous exposure of non-diabetics to high levels of dioxins and mercury increases their risk of insulin resistance. J Hazard Mat. 185(2-3):749-55, January 30, 2011.
  • Dutra, M.D., Monteiro, M.C., Camara, Vde.M.: Evaluation of central auditory processing in adolescents exposed to metallic mercury. Pro Fono. 22(3):339-44, July-September 2010.
  • EPA IRIS: Mercury, 1995.
  • Farahat, S.A., Rashed, L.A., Zawilla, N.H., Farouk, S.M.: Effect of occupational exposure to elemental mercury in the amalgam on thymulin hormone production among dental staff. Toxicol Ind Health. 25(3):159-67, April 2009.
  • Feitosa-Santana, C., Bimler D.L., Paramei, G.V., Oiwa, N.N., Barboni, M.T., Costa, M.F., Silveira, L.C., Ventura, D.F.: Color-space distortions following long-term occupational exposure to mercury vapor. Opthalmic Physiol Opt. 30(5):724-30, September 2010.
  • Gardner, R.M., Nyland J.F., Silva, I.A., de Souza, J.M., Silbergeld, E.K.: Mercury exposure, serum antinuclear/antinucleolar antibodies and serum cytokine levels in mining populations in Amazonian Brazil: A cross-sectional study. Environ Res. 110(4): 345-354, May 2010.
  • NIOSH: Criteria for a Recommended Standard - Occupational Exposure to Inorganic Mercury. 1973.
  • NIOSH: Occupational Health Guideline for Inorganic Mercury. 1978.
  • WHO/IPCS: Environmental Health Criteria 118 - Inorganic Mercury. pp. 13-21, 68-83, 1991. Fawer, R.F., U. DeRibaupierre, M.P. Guillemin, M. Berode and M. Lobe. 1983. Measurement of hand tremor induced by industrial exposure to metallic mercury. J. Ind. Med. 40: 204-208.
  • Piikivi, L. and U. Tolonen. 1989. EEG findings in chlor-alkali workers subjected to low long term exposure to mercury vapor. Br. J. Ind. Med. 46: 370-375.
  • Piikivi, L. and H. Hanninen. 1989. Subjective symptoms and psychological performance of chlorine-alkali workers. Scand. J. Work Environ. Health. 15: 69-74.
  • Piikivi, L. 1989. Cardiovascular reflexes and low long-term exposure to mercury vapor. Int. Arch. Occup. Environ. Health. 61: 391-395.
  • Ngim, C.H., S.C. Foo, K.W. Boey and J. Jeyaratnam. 1992. Chronic neurobehavioral effects of elemental mercury in dentists. Br. J. Ind. Med. 49: 782-790.
  • Liang, Y-X., R-K. Sun, Y. Sun, Z-Q. Chen and L-H. Li. 1993. Psychological effects of low exposure to mercury vapor: Application of a computer-administered neurobehavioral evaluation system. Environ. Res. 60: 320-327.

Last Updated Date : 01/04/2021