Agent Name

Zinc chloride fume

CAS Number

7646-85-7

Formula

Cl2-Zn

Major Category

Metals

Synonyms

Butter of zinc; Chlorure de zinc [French]; Zinc (chlorure de) [French]; Zinc butter; Zinc chloride; Zinc chloride in plastic container; Zinc chloride, (solution); Zinc dichloride; Zinc(II) chloride; Zinco (cloruro di) [Italian]; Zine dichloride; Zinkchlorid [German]; Zinkchloride [Dutch]; Zintrace; Zinc chloride, anhydrous; Zinc chloride, solution; [ChemIDplus] UN2331; UN1840 (solution)

Category

Metals, Inorganic Compounds

Description

White particulate dispersed in air; [NIOSH] Zinc chloride: White odorless solid; Highly deliquescent; [Merck Index] White odorless powder, crystals, or beads; Hygroscopic; [Alfa Aesar MSDS]

Sources/Uses

Zinc chloride is used as a soldering flux, battery electrolyte, and crowd control agent; also used in iron galvanizing, textiles, adhesives, deodorants, wood preserving, and petroleum refining; [ACGIH] Used as a glazing flux in glassblowing; [www.ci.tucson.az.us/arthazards/medium.html] Other applications include deodorizing, disinfecting, embalming, fireproofing lumber, etching metals, microscopy, chemical syntheses, making parchment paper, artificial silk, dyes, activated carbon, cold-water glues, and vulcanized fiber, browning steel, copper-plating iron, magnesia cements, textiles (mordant in printing and dyeing, carbonizing woolen goods, mercerizing cotton, and sizing and weighting fabrics), vulcanizing rubber, cellulose solvent, dentin desensitizer, smoke bombs, and as human and veterinary astringent [Merck Index] Registered for use in the US for the control of moss and fungi on outdoor walkways and patios; [EPA REDs]

Comments

Asthma reported in a solderer and a locksmith; [Malo] At a concentration of 0.4 mg/m3, ZnCl2 caused no respiratory irritation; at 4.8 mg/m3 for 30 minutes, transient respiratory irritation occurred. Higher concentrations after industrial accidents have been associated with toxic pneumonitis. [ACGIH] Zinc chloride is corrosive to the eyes, skin, and respiratory tract; [ICSC] Causes burns; Harmful by ingestion; [Alfa Aesar MSDS] See "Zinc."

Reference Link

Occupational asthma due to soft corrosive soldering fluxes containing zinc chloride and ammonium chloride

Exposure Assessment
Skin Designation (ACGIH)

Insufficient data

TLV (ACGIH)

1 mg/m3

STEL (ACGIH)

2 mg/m3

PEL (OSHA)

1 mg/m3

MAK

0.1 mg/m3(respirable fraction), 2 mg/m3 (inhalable fraction)

IDLH (NIOSH)

50 mg/m3

Excerpts from Documentation for IDLHs

Human data: A 30minute exposure to 4.8 mg/m3 has been reported to produce respiratory distress [Ferry 1974]. Exposure to 80 mg/m3 has caused nausea and coughing and 120 mg/m3 for 2 minutes has caused nose and upper respiratory system irritation [Cullumbine 1957].

Lethal Concentration

LCLo (rat) = 1,960 mg/m3/10min

Explanatory Notes

LC50 (rat) = 2,000 mg/m3

Half Life

For zinc, whole body: 162-500 days; [TDR, p. 1245]

Reference Link

ATSDR - ToxFAQs - Zinc

Adverse Effects
Asthma

Yes

Toxic Pneumonitis

Yes

Dermatotoxin

Skin Burns

Links to Other NLM Databases
Health Studies

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Toxicity Information

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Chemical Information

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Biomedical References

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Related Information in HazMap
Diseases

Occupational diseases associated with exposure to this agent:

Processes

Industrial Processes with risk of exposure:

Activities

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