Tin(II) oxide (as Sn)
Synonyms & Trade Names Stannous oxide, Tin protoxide [Note: Also see specific listing for Tin(IV) oxide (as Sn).]
CAS No. 21651-19-4		RTECS No. XQ3700000		DOT ID & Guide
Formula SnO		Conversion		IDLH N.D. See: IDLH INDEX
Exposure Limits NIOSH REL : TWA 2 mg/m³ OSHA PEL †: none				Measurement Methods NIOSH 7303
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
Exposure Routes inhalation, skin and/or eye contact
Symptoms Stannosis (benign pneumoconiosis): dyspnea (breathing difficulty), decreased pulmonary function
Target Organs respiratory system
Personal Protection/Sanitation (See protection codes) 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 Not available. Important additional information about respirator selection
See also: INTRODUCTION See ICSC CARD: 0956

Tin(II) oxide (as Sn)