ZINC OXIDE, DUST & FUME†

Chemical Identification
Chemical Identification
CAS # 1314-13-2
Formula

ZnO

Synonyms

zinc peroxide

Physical Properties
Physical Properties
Physical description White, odorless solid.
Boiling point Molecular weight 81.4
Freezing point/melting point 3587°F Vapor pressure 0 mmHg (approx)
Flash point Vapor density
Specific gravity 5.61 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.) 2610 2610 Z102 (total) [request analyte codes 9135 & Z102], Z103 (resp); [request analyte codes 9130 & Z103]
Sampling group METALSSG-2 METALSSG-3
Sampler/Sampling media Pre-assembled cassette with mixed cellulose ester filter (MCEF) 0.8 micron (37 mm) [MAWP037A0] Pre-assembled cassette with mixed cellulose ester filter (MCEF) 0.8 micron (37 mm) [MAWP037A0] Tared low-ash 37 mm PVC filter, 5 microns [SLTC108]
Sampling time*

240-480 min

240-480 min

240-480 min

Sampling volume (TWA)*

480-960 L

480-960 L

960 L (total); 816 L (resp)

Sampling flow rate (TWA)*

2 L/min

2 L/min

2 L/min (total); 1.7 L/min ±5% (resp)

Sampling volume (STEL/Peak/C)*

408-960 L (total); 408-816 L (resp)

Sampling flow rate (STEL/Peak/C)*

2 L/min (total); 1.7 L/min ±5% (resp)

Analytical method instruments ICP ICP-MS Gravimetric
Method reference OSHA ID-125G (fully validated) OSHA ID-206 (fully validated) OSHA PV2121 (partially validated)
Notes

Results will be reported from the elemental analysis for the element only; the stated identity of the actual sample contents is based on the assumption that the material sampled is as identified by the compliance officer using available documentation of materials and processes. An elemental result provided may be converted to the desired compound by multiplying the result by the appropriate stoichiometric factor.

A 91B report specific to the compound (including the stoichiometric conversion) may by be provided upon request by contacting the laboratory. The stoichiometric factor for zinc oxide from zinc is 1.245. The physical form of a sample (dust, mist, or fume) is identified by the compliance officer using available documentation of materials and processes.

Results will be reported from the elemental analysis for the element only; the stated identity of the actual sample contents is based on the assumption that the material sampled is as identified by the compliance officer using available documentation of materials and processes. An elemental result provided may be converted to the desired compound by multiplying the result by the appropriate stoichiometric factor.

A 91B report specific to the compound (including the stoichiometric conversion) may by be provided upon request by contacting the laboratory. The stoichiometric factor for zinc oxide from zinc is 1.245. The physical form of a sample (dust, mist, or fume) is identified by the compliance officer using available documentation of materials and processes.

Samples collected for this compound are first analyzed gravimetrically. If the gravimetric result of a sample yields a concentration below the permissible exposure limit (PEL), the Salt Lake Technical Center will report the calculated air concentration for the requested compound solely from the gravimetric result, qualified as less than or equal to the gravimetric result; no further work on the sample will be performed. If the gravimetric result indicates an air concentration greater than the PEL, the sample will proceed for elemental analysis. Results will be reported from the elemental analysis for the element only; the stated identity of the actual sample contents is based on the assumption that the material sampled is as identified by the compliance officer using available documentation of materials and processes.

An elemental result provided may be converted to the desired compound by multiplying the result by the appropriate stoichiometric factor. A 91B report specific to the compound (including the stoichiometric conversion) may by be provided upon request by contacting the laboratory. The stoichiometric factor for zinc oxide from zinc is 1.245. The standard applies to the Respirable Fraction for Z103. These samples must be collected with a Dorr-Oliver cyclone. The physical form of a sample (dust, mist, or fume) is identified by the compliance officer using available documentation of materials and processes.

Special requirements

For the entire suite of analytes listed in METALSSG-2, request analyte code 2587.

For the entire suite of analytes listed in METALSSG-3, which may be found during soldering and brazing operations, request analyte code S131.

FOR TOTAL DUST SAMPLES, DO NOT USE A CYCLONE!!

For respirable samples, media must be preceded by a 10 mm nylon Dorr-Oliver cyclone.

* 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

Contact SLTC for information. Zinc is not reported for Ghost Wipes.

Bulk Method
Bulk Method

This analysis is for the metal component of this analyte only. The conversion back to the analyte is a mathematical one assuming all metal present is from the analyte source. Request using analyte code Z100.

On-Site Screening Techniques
On-Site Screening Techniques
Device
Model/Type
Sampling information
(see manufacturer instructions)
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

5 mg/m³

REL-TWA

5 mg/m³

TLV-TWA

2 mg/m³ (respirable particulate matter) [2001]

PEL-TWA

5 mg/m³

PEL-STEL REL-STEL

10 mg/m³

TLV-STEL

10 mg/m³ (respirable particulate matter) [2001]

PEL-STEL

10 mg/m³

PEL-C REL-C TLV-C PEL-C
Skin notation

N

Skin notation

N

Skin notation

N

Skin notation

N

Notes:

The OSHA PEL listed is for ZnO Fume. For dusts, the PEL is 15 mg/m³ (total) and 5 mg/m³ (resp). See 29 CFR 1910.1000 Table Z-1.

Notes:

NIOSH REL listed is for ZnO fume. For dusts, the REL TWA is 5 mg/m³, and the ceiling value (C) is 15 mg/m³.

Notes: Notes:

For zinc oxide dust, see Particulates not otherwise regulated.

Health factors:  See NIH-NLM PubChem. IDLH

500 mg/m³

Carcinogenic classifications: Notes:
AIHA emergency response planning guidelines - ERPG-1/ERPG-2/ERPG-3:
Additional Resources and Literature References
Additional Resources and Literature References

NOAA: CAMEO Chemicals - Zinc oxide, crude

NIOSH: Pocket Guide to Chemical Hazards - Zinc oxide

Literature References

  • NOAA: CAMEO Chemicals - Zinc Peroxide.
  • ACGIH: Documentation of the threshold limit values (TLVs) and biological exposure indices (BEIs) - Zinc oxide. See annual publication for most recent information.
  • Fine, J.M. et al.: Characterization of clinical tolerance to inhaled zinc oxide in naive subjects and sheet metal workers. J. Occup. Environ. Med. 42(11): 1085-1091, 2000.
  • Kuschner, W.G., D'Alessandro, A., Wong, H. and Blanc, P.D.: Early pulmonary cytokine responses to zinc oxide fume inhalation. Environ. Res. 75(1): 7-11, 1997.
  • NIOSH: Criteria for a Recommended Standard - Occupational Exposure to Zinc Oxide. 1975.
  • NIOSH: Occupational Health Guideline for Zinc Oxide Fume. September 1978.

Last Updated Date : 08/04/2022