# NIOSH Pocket Guide to Chemical Hazards
Zinc chloride fume | CAS 7646-85-7
ZnCl2 | RTECS ZH1400000
Synonyms & Trade Names Zinc dichloride fume | DOT ID & Guide 2331 154
Exposure Limits | NIOSH REL: TWA 1 mg/m3 ST 2 mg/m3
OSHA PEL†: TWA 1 mg/m3
IDLH 50 mg/m3 | Conversion
Physical Description White particulate dispersed in air.
MW: 136.3 | BP: 1350°F | MLT: 554°F | Sol(70°F): 435%
VP: 0 mmHg (approx) | IP: NA |  | Sp.Gr(77°F): 2.91
Fl.P: NA | UEL: NA | LEL: NA |
Noncombustible Solid
Incompatibilities & Reactivities Potassium
Measurement Methods OSHA ID121
Personal Protection & Sanitation Skin: No recommendation Eyes: No recommendation Wash skin: No recommendation Remove: No recommendation Change: No recommendation | First Aid (See procedures) Breathing: Respiratory support
Respirator Recommendations NIOSH/OSHA Up to 10 mg/m3: (APF = 10) Any dust, mist, and fume respirator*/(APF = 10) Any supplied-air respirator* Up to 25 mg/m3: (APF = 25) Any supplied-air respirator operated in a continuous-flow mode*/(APF = 25) Any powered, air-purifying respirator with a dust, mist, and fume filter* Up to 50 mg/m3: (APF = 50) Any air-purifying, full-facepiece respirator with a high-efficiency particulate filter/(APF = 50) Any powered, air-purifying respirator with a tight-fitting facepiece and a high-efficiency particulate filter*/(APF = 50) Any self-contained breathing apparatus with a full facepiece/(APF = 50) Any supplied-air respirator with a full facepiece Emergency or planned entry into unknown concentrations or IDLH conditions: (APF = 10,000) Any self-contained breathing apparatus that has a full facepiece and is operated in a pressure-demand or other positive-pressure mode/(APF = 10,000) Any supplied-air respirator that has a full facepiece and is operated in a pressure-demand or other positive-pressure mode in combination with an auxiliary self-contained positive-pressure breathing apparatus Escape: (APF = 50) Any air-purifying, full-facepiece respirator with a high-efficiency particulate filter/Any appropriate escape-type, self-contained breathing apparatus
Exposure Routes inhalation, skin and/or eye contact
Symptoms Irritation eyes, skin, nose, throat; conjunctivitis; cough, copious sputum; dyspnea (breathing difficulty), chest pain, pulmonary edema, pneumonitis; pulmonary fibrosis, cor pulmonale; fever; cyanosis; tachypnea; skin burns
Target Organs Eyes, skin, respiratory system, cardiovascular system
See also: INTRODUCTION