ZINC CHLORIDE FUME | Occupational Safety and Health Administration

ZINC CHLORIDE FUME†

Chemical Identification
CAS #	7646-85-7
Formula	ZnCl₂
Synonyms	zinc dichloride fume

Physical Properties
Physical description	White particulate dispersed in air with an acrid odor. Zinc chloride is a white crystalline solid.
Boiling point	1350°F	Molecular weight	136.3
Freezing point/melting point	554°F	Vapor pressure	0 mmHg (approx)
Flash point		Vapor density
Specific gravity	2.91 at 77°F	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.)	2611
Sampling group	METALSSG-2
Sampler/Sampling media	Mixed cellulose ester filter (MCEF) 0.8 micron (37 mm) and filter spacer with Na₂CO₃ impregnated backup pad, in a 3-piece cassette [SKC 225-9001]
Sampling time^*	240-480 min
Sampling volume (TWA)^*	480-960 L
Sampling flow rate (TWA)^*	2 L/min
Sampling volume (STEL/Peak/C)^*
Sampling flow rate (STEL/Peak/C)^*
Analytical method instruments	ICP
Method reference	OSHA ID-125G (fully 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 chloride from zinc is 2.084. 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.

^* 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
Model/Type
Sampling information (see manufacturer instructions)

**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/m³	REL-TWA	1 mg/m³	TLV-TWA	1 mg/m³ [1992]	PEL-TWA	1 mg/m³
PEL-STEL		REL-STEL	2 mg/m³	TLV-STEL	2 mg/m³ [1992]	PEL-STEL	2 mg/m³
PEL-C		REL-C		TLV-C		PEL-C
Skin notation	N	Skin notation	N	Skin notation	N	Skin notation	N
Notes: See 29 CFR 1910.1000 Table Z-1.		Notes:		Notes:		Notes:
Health factors: See NIH-NLM PubChem.		IDLH	50 mg/m³
Carcinogenic classifications: EPA-II		Notes:
AIHA emergency response planning guidelines - ERPG-1/ERPG-2/ERPG-3:

Additional Resources and Literature References

NOAA: CAMEO Chemicals - Zinc chloride, anhydrous

NIOSH: Pocket Guide to Chemical Hazards - Zinc chloride fume

Literature References

ACGIH: Documentation of the Threshold Limit Values (TLVs) and Biological Exposure Indices (BEIs) - Zinc chloride fume. See annual publication for most recent information.
Barceloux, D.G.: Zinc. J. Toxicol. Clin. Toxicol. 37(2): 279-292, 1999.
Pettilä, V., Takkunen, O. and Tukiainen, P.: Zinc chloride smoke inhalation: a rare cause of severe acute respiratory distress syndrome. Intensive Care Med. 26(2): 215-217, 2000.
Pohanish, R.P. (editor): Zinc chloride. Sittig's Handbook of Toxic and Hazardous Chemicals and Carcinogens, Fourth Ed., Vol. 2. Norwich, NY: Noyes Publications, William Andrew Publishing, 2002, pp. 2354-2356.
Zerahn, B., et al.: Pulmonary damage after modest exposure to zinc chloride smoke. Respir. Med. 93(12): 885-890, 1999.

Last Updated Date : 04/07/2023

Group Sampling Information
Sampling Media	Sampling Time (If there are exceptions they will be in Notes)	TWA Sampling Volume (If there are exceptions they will be in Notes)	TWA Flow Rate (If there are exceptions they will be in Notes)
mixed cellulose ester filter (MCEF)	240-480 min	480-960 L	2 L/min

Analytes Sampling Information
Analytes	IMIS Code	Wipe Sampling	Incompatibilities
Iron*	I200	Yes, with a Ghost Wipe
Vanadium*	V125	Yes, with a Ghost Wipe
Zinc*	Z100	Yes, with a Ghost Wipe
Chromium, Metal & Insoluble salts (as Cr)**	0685	Yes, with a Ghost Wipe	Hexavalent Chromium
Cobalt, Metal, Dust & Fume (as Co)	0720	Yes, with a Ghost Wipe	Tungsten
Copper Dust & Mists (as Cu)	0730	Yes, with a Ghost Wipe
Copper Fume (as Cu)	0731	Yes, with a Ghost Wipe
Iron Oxide Fume	1520	Yes, with a Ghost Wipe
Manganese, Compounds & Fume (as Mn)***	1620	Yes, with a Ghost Wipe
Molybdenum, Dust & Insoluble compounds, (as Mo)	1790	Yes, with a Ghost Wipe
Nickel, Metal, & Insoluble compounds (as Ni)	1840	Yes, with a Ghost Wipe
Vanadium, Respirable Dust & Fume	2571	Yes, with a Ghost Wipe
Zinc Oxide Fume	2610	Contact SLTC for information

Notes

Request any or all of these analytes together. Entire group can be requested with analyte code 2587.

Results for unrequested analytes in this group will be reported if significant amount are found.

There is no need to contact SLTC before sampling.

This analysis can be pre-analyzed gravimetrically if collected on a pre-weighted PVC filter obtained from SLTC.

*These 3 codes are used for bulk sample results in place of their metal oxides.

**Please note that this is NOT hexavalent chromium.

***For Manganese STEL take only a 10-30 L sample.

ZINC CHLORIDE FUME†

Chemical Identification

Physical Properties

Monitoring Methods Used by OSHA

Bulk/Wipe Method

On-Site Screening Techniques

Exposure Limits

Additional Resources and Literature References