# NIOSH Pocket Guide to Chemical Hazards
Tin | CAS 7440-31-5
Sn | RTECS XP7320000
Synonyms & Trade Names Metallic tin, Tin flake, Tin metal, Tin powder | DOT ID & Guide
Exposure Limits | NIOSH REL*: TWA 2 mg/m3 [*Note: The REL also applies to other inorganic tin compounds (as Sn) except tin oxides.]
OSHA PEL*: TWA 2 mg/m3 [*Note: The PEL also applies to other inorganic tin compounds (as Sn) except tin oxides.]
IDLH 100 mg/m3 (as Sn) | Conversion
Physical Description Gray to almost silver-white, ductile, malleable, lustrous solid.
MW: 118.7 | BP: 4545°F | MLT: 449°F | Sol: Insoluble
VP: 0 mmHg (approx) | IP: NA |  | Sp.Gr: 7.28
Fl.P: NA | UEL: NA | LEL: NA |
Noncombustible Solid, but powdered form may ignite.
Incompatibilities & Reactivities Chlorine, turpentine, acids, alkalis
Measurement Methods NIOSH 7300; OSHA ID121, ID206
Personal Protection & Sanitation Skin: No recommendation Eyes: No recommendation Wash skin: No recommendation Remove: No recommendation Change: No recommendation | First Aid (See procedures) Eye: Irrigate immediately Skin: Soap wash immediately Breathing: Respiratory support Swallow: Medical attention immediately
Respirator Recommendations NIOSH/OSHA Up to 10 mg/m3: (APF = 5) Any dust and mist respirator* Up to 20 mg/m3: (APF = 10) Any dust and mist respirator except single-use and quarter-mask respirators^*/(APF = 10) Any supplied-air respirator* Up to 50 mg/m3: (APF = 25) Any supplied-air respirator operated in a continuous-flow mode*/(APF = 25) Any powered, air-purifying respirator with a dust and mist filter^* Up to 100 mg/m3: (APF = 50) Any air-purifying, full-facepiece respirator with 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, respiratory system; in animals: vomiting, diarrhea, paralysis with muscle twitching
Target Organs Eyes, skin, respiratory system
See also: INTRODUCTION