Tin(II) flouride

  • Stannous fluoride
  • Tin difluoride
Formula
SnF2
Structure
Description
White crystalline solid.
Uses
Medication.

Registry Numbers and Inventories.
CAS
7783-47-3
EC (EINECS/ELINCS)
231-999-3
RTECS
XQ3450000
RTECS class
Tumorigen; Drug; Mutagen
UN (DOT)
3288
Merck
12,8940
Beilstein/Gmelin
9242 (G)
Canada DSL/NDSL
DSL
US TSCA
Listed
Austrailia AICS
Listed
New Zealand
Listed
Japan ENCS (MITI)
Listed
Korea ECL
Listed

Properties.
Formula
F2Sn
Formula mass
156.68
Melting point, °C
215
Boiling point, °C
850
Vapor density (air=1)
N/R
Density
4.57 g/cm3
Solubility in water
350 g/L
Thermal expansion
3.54E-05/K
Heat of fusion
13.8 kJ/mol

Hazards and Protection.
Storage
Keep refrigerated. Store in a tightly closed container. Store in a cool, dry, well-ventilated area away from incompatible substances. Do not expose to air. Store protected from moisture. Store under an inert atmosphere.
Handling
Wash thoroughly after handling. Use with adequate ventilation. Avoid contact with eyes, skin, and clothing. Keep container tightly closed. Avoid ingestion and inhalation. Store protected from air. Wash clothing before reuse. Keep from contact with moist air and steam.
Protection
Wear goggles and self-contained respirator. Skin contact should be prevented by protective clothing.
Respirators
Follow the OSHA respirator regulations found in 29CFR 1910.134 or European Standard EN 149. Always use a NIOSH or European Standard EN 149 approved respirator when necessary.
Small spills/leaks
Clean up spills immediately, using the appropriate protective equipment. Sweep up or absorb material, then place into a suitable clean, dry, closed container for disposal. Avoid generating dusty conditions. Provide ventilation.
Stability
Stable at room temperature in closed containers under normal storage and handling conditions.
Incompatibilities
Oxidizing agents.
Decomposition
Irritating and toxic fumes and gases, fluoride fumes, fluorine.

Fire.
Fire fighting
Wear a self contained breathing apparatus with full facepiece operated in pressure demand or other positive pressure mode. Inorganic tin cmpd (as tin)
Fire potential
Not flammable
Combustion products
Fire may produce irritating, corrosive and/or toxic gases.

Health.
Exposure limit(s)
TLV (as tin): 2 mg/m3 (ACGIH 1997).
Exposure effects
Repeated exposure may cause erosion of teeth. Chronic exposure to fluoride compounds may cause systemic toxicity.
   Ingestion
Harmful if swallowed. May cause gastrointestinal irritation with nausea, vomiting and diarrhea. Ingestion of large amounts of fluoride may include salivation, nausea, vomiting, abdominal pain, fever, labored breathing. Inorganic fluorides can be harmful. Acute exposure to fluorine compounds can lead to digestive tract burns, and abdominal pain.
   Inhalation
May cause respiratory tract irritation. Exposure to the mist and vapor may erode exposed teeth.
   Skin
May cause skin irritation.
   Eyes
May cause eye irritation.

First aid
 
   Ingestion
If victim is conscious and alert, give 2-4 cupfuls of milk or water. Never give anything by mouth to an unconscious person. Get medical aid immediately.
   Inhalation
Remove from exposure to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen. Get medical aid.
   Skin
Get medical aid. Flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes. Wash clothing before reuse.
   Eyes
Flush with plenty of water for at least 15 minutes.

Transport.
UN number
3288
Response guide
Hazard class
6.1
Packing Group
I; II; III
 
USCG CHRIS Code
STF