# NIOSH Pocket Guide to Chemical Hazards
Ammonium chloride fume | CAS 12125-02-9
NH4Cl | RTECS BP4550000
Synonyms & Trade Names Ammonium chloride, Ammonium muriate fume, Sal ammoniac fume | DOT ID & Guide 9085 171
Exposure Limits | NIOSH REL: TWA 10 mg/m3 ST 20 mg/m3
OSHA PEL†: none
IDLH N.D. | Conversion
Physical Description Finely divided, odorless, white particulate dispersed in air.
MW: 53.5 | BP: Sublimes | MLT: 662°F (Sublimes) | Sol: 37%
VP(321°F): 1 mmHg | IP: NA |  | Sp.Gr: 1.53
Fl.P: NA | UEL: NA | LEL: NA |
Noncombustible Solid
Incompatibilities & Reactivities Alkalis & their carbonates, lead & silver salts, strong oxidizers, ammonium nitrate, potassium chlorate, bromine trifluoride [Note: Corrodes most metals at high (i.e., fire) temperatures.]
Measurement Methods OSHA ID188
Personal Protection & Sanitation Skin: Prevent skin contact Eyes: Prevent eye contact Wash skin: When contaminated Remove: When wet or contaminated Change: Daily Provide: Eyewash, Quick drench | First Aid (See procedures) Eye: Irrigate immediately Skin: Soap wash immediately Breathing: Respiratory support
Respirator Recommendations To be added later
Exposure Routes inhalation, skin and/or eye contact
Symptoms Irritation eyes, skin, respiratory system; cough, dyspnea (breathing difficulty), pulmonary sensitization
Target Organs Eyes, skin, respiratory system
See also: INTRODUCTION