NIOSH Pocket Guide to Chemical Hazards

Tin(II) oxide (as Sn) CAS 21651-19-4
SnO RTECS
Synonyms & Trade Names
Stannous oxide, Tin protoxide [Note: Also see specific listing for Tin(IV) oxide (as Sn).]
DOT ID & Guide
Exposure
Limits
NIOSH REL: TWA 2 mg/m3
OSHA PEL�: none
IDLH N.D. Conversion
Physical Description
Brownish-black powder.
MW: 134.7
BP: Decomposes
MLT(600 mmHg): 1976°F (Decomposes)
Sol: Insoluble
VP: 0 mmHg (approx)
IP: NA

Sp.Gr: 6.3
Fl.P: NA
UEL: NA
LEL: NA

Incompatibilities & Reactivities
None reported
Measurement Methods
NIOSH 7300
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

Breathing: Fresh air

Respirator Recommendations To be added later
Exposure Routes inhalation, skin and/or eye contact
Symptoms Stannosis (benign pneumoconiosis): dyspnea (breathing difficulty), decreased pulmonary function
Target Organs respiratory system
See also: INTRODUCTION