Label abbreviations descriptions

MERCURY (VAPOR)†

Chemical Identification
CAS # 7439-97-6
Formula

Hg
Synonyms

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

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
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.

Bulk/Wipe Method
Wipe Sampler/Sampling media
 

 
Bulk Method
 

 

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
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

0.1 mg/m³ - Construction (1926) and Maritime (1925) only

 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

1 mg/10m³ (0.1 mg/m³)* - General Industry (1910) only

 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. 8-hr TWA and skin notation apply to OSHA Construction and Maritime Industries only. See 29 CFR 1926.55 Table 1 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

Last Updated Date : 11/03/2022