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STANNOUS OXIDE ICSC: 0956
Date of peer-review: October 1997

Tin monoxide
Tin protoxide
Tin (II) oxide
CAS # 21651-19-4 SnO
RTECS # XQ3700000 Molecular mass: 134.7
UN #
EC #
TYPES OF HAZARD / EXPOSURE ACUTE HAZARDS / SYMPTOMS PREVENTION FIRST AID / FIRE FIGHTING
FIRE

In case of fire in the surroundings: all extinguishing agents allowed.
EXPLOSION


EXPOSURE
PREVENT DISPERSION OF DUST!

Inhalation Cough.
Local exhaust or breathing protection.
Fresh air, rest.
Skin
Protective gloves.
Rinse skin with plenty of water or shower.
Eyes
Safety spectacles, or eye protection in combination with breathing protection if powder.
First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then take to a doctor.
Ingestion


SPILLAGE DISPOSAL PACKAGING & LABELLING
Sweep spilled substance into containers; if appropriate, moisten first to prevent dusting. Carefully collect remainder, then remove to safe place. (Extra personal protection: P2 filter respirator for harmful particles).
EU Classification
UN Classification

EMERGENCY RESPONSE STORAGE


IPCS
International
Programme on
Chemical Safety
Prepared in the context of cooperation between the International Programme on Chemical Safety and the Commission of the European Communities IPCS, CEC 2001

SEE IMPORTANT INFORMATION ON BACK


STANNOUS OXIDE ICSC: 0956
IMPORTANT DATA
PHYSICAL STATE; APPEARANCE:
BROWNISH BLACK POWDER

CHEMICAL DANGERS:
On heating at 300C in air, oxidation to stannic oxide proceeds incandescently.

OCCUPATIONAL EXPOSURE LIMITS:
TLV (as tin): 2 mg/m^3 (ACGIH 1997).
ROUTES OF EXPOSURE:
The substance can be absorbed into the body by inhalation of its aerosol.

INHALATION RISK:
Evaporation at 20C is negligible; a harmful concentration of airborne particles can, however, be reached quickly.

EFFECTS OF SHORT-TERM EXPOSURE:
The aerosol of this substance irritates the respiratory tract.

EFFECTS OF LONG-TERM OR REPEATED EXPOSURE:
Lungs may be affected by repeated or prolonged exposure to dust particles, resulting in a benign pneumoconiosis (stannosis).
PHYSICAL PROPERTIES
Melting point (decomposes): (at 80 kPa) 1080C
Density: 6.45 g/cm^3
Solubility in water: none
ENVIRONMENTAL DATA

NOTES
Also consult ICSC #0954 (Stannic oxide).
ADDITIONAL INFORMATION


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IPCS, CEC 2001