Tin monoxide
Stannous oxide
SnO
Molecular mass: 134.7
ICSC # 0956
CAS # 21651-19-4
RTECS # XQ3700000
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Types of Hazard/ Exposure
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Acute Hazards/ Symptoms
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Prevention
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First Aid/
Fire Fighting
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FIRE
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Not combustible.
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In case of fire in the surroundings: use appropriate extinguishing media.
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Explosion
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Exposure
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PREVENT DISPERSION OF DUST!
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•Inhalation
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Cough.
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Local exhaust or breathing protection.
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Fresh air, rest.
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•Skin
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Protective gloves.
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Rinse skin with plenty of water or shower.
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•Eyes
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Safety goggles,
or eye protection in combination with breathing protection if powder.
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First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then take to a doctor.
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•Ingestion
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Do not eat, drink, or smoke during work.
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Rinse mouth.
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Spillage Disposal
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Storage
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Packaging & Labelling
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Sweep spilled substance into containers; if appropriate, moisten first to prevent dusting.
Carefully collect remainder,
then remove to safe place.
Personal protection: P2 filter respirator for harmful particles.
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Important Data
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Physical State; Appearance:
BLUE TO BLACK CRYSTALLINE POWDER
Physical Dangers:
Chemical Dangers:
On heating at 300°C in air, oxidation to stannic oxide proceeds incandescently.
Occupational Exposure Limits:
TLV: (as Sn, Oxide and inorganic compounds, except tin hydride) 2 mg/m3 as TWA; (ACGIH 2004).
EU OEL: (Tin inorganic compounds, as Sn) 2 mg/m3 as TWA; (EU 2004).
OSHA PEL: none
NIOSH REL: TWA 2 mg/m3
NIOSH IDLH: N.D. See: IDLH INDEX
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Routes of Exposure:
Inhalation Risk:
A harmful concentration of airborne particles can be reached quickly when dispersed, especially if powdered.
Effects of Short-Term Exposure:
May cause mechanical irritation to 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).
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Physical
Properties
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Density: 6.45
g/cm3
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Solubility in water:
none
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Environmental
Data
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Bioaccumulation of this chemical may occur in crustacea and in fish.
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N O T E S
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ADDITIONAL INFORMATION
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ICSC: 0956
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TIN(II) OXIDE
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(C) IPCS, CEC, 1994
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IMPORTANT LEGAL NOTICE:
Neither NIOSH, the CEC or the IPCS nor any person acting on behalf of NIOSH,
the CEC or the IPCS is responsible for the use which might be made of this
information. This card contains the collective views of the IPCS Peer Review Committee and may
not reflect in all cases all the detailed requirements included in national legislation
on the subject. The user should verify compliance of the cards with the relevant legislation
in the country of use.
The only modifications made to produce the U.S. version is inclusion of the OSHA PELs, NIOSH RELs and NIOSH IDLH values.
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