Tin(II) chloride

Tin(II) chloride
Tin(II) chloride
Ball-and-stick model (gas phase).
Space-filling model (gas phase).
Names
IUPAC names
Tin(II) chloride
Tin dichloride
Other names
  • Stannous chloride
  • Tin salt
  • Tin protochloride
Identifiers
3D model (JSmol)
ChEBI
ChemSpider
DrugBank
ECHA InfoCard 100.028.971 Edit this at Wikidata
EC Number
  • 231-868-0
E number E512 (acidity regulators, ...)
RTECS number
  • XP8700000 (anhydrous)
    XP8850000 (dihydrate)
UNII
UN number 3260
  • InChI=1S/2ClH.Sn/h2*1H;/q;;+2/p-2 ☒N
    Key: AXZWODMDQAVCJE-UHFFFAOYSA-L ☒N
  • InChI=1/2ClH.Sn/h2*1H;/q;;+2/p-2
    Key: AXZWODMDQAVCJE-NUQVWONBAJ
  • Cl[Sn]Cl
Properties
SnCl2
Molar mass 189.60 g/mol (anhydrous)
225.63 g/mol (dihydrate)
Appearance White crystalline solid
Odor odorless
Density 3.95 g/cm3 (anhydrous)
2.71 g/cm3 (dihydrate)
Melting point 247 °C (477 °F; 520 K) (anhydrous)
37.7 °C (dihydrate)
Boiling point 623 °C (1,153 °F; 896 K) (decomposes)
83.9 g/100 ml (0 °C)
Hydrolyses in hot water
Solubility soluble in ethanol, acetone, ether, Tetrahydrofuran
insoluble in xylene
−69.0·10−6 cm3/mol
Structure
Layer structure
(chains of SnCl3 groups)
Trigonal pyramidal (anhydrous)
Dihydrate also three-coordinate
Bent (gas phase)
Thermochemistry
−325 kJ/mol
Hazards
Occupational safety and health (OHS/OSH):
Main hazards
 Irritant, dangerous for aquatic organisms
GHS labelling:[2]
GHS05: Corrosive GHS07: Exclamation mark GHS08: Health hazard
Danger
H290, H302+H332, H314, H317, H335, H373, H412
P260, P273, P280, P303+P361+P353, P304+P340+P312, P305+P351+P338+P310
NFPA 704 (fire diamond)
NFPA 704 four-colored diamondHealth 3: Short exposure could cause serious temporary or residual injury. E.g. chlorine gasFlammability 0: Will not burn. E.g. waterInstability 0: Normally stable, even under fire exposure conditions, and is not reactive with water. E.g. liquid nitrogenSpecial hazards (white): no code
3
0
0
Lethal dose or concentration (LD, LC):
700 mg/kg (rat, oral)
10,000 mg/kg (rabbit, oral)
250 mg/kg (mouse, oral)[1]
Safety data sheet (SDS) ICSC 0955 (anhydrous)
ICSC 0738 (dihydrate)
Related compounds
Other anions
 Tin(II) fluoride
Tin(II) bromide
Tin(II) iodide
Other cations
 Germanium dichloride
Tin(IV) chloride
Lead(II) chloride
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Tin(II) chloride, also known as stannous chloride, is a white crystalline solid with the formula SnCl2. It forms a stable dihydrate, but aqueous solutions tend to undergo hydrolysis, particularly if hot. SnCl2 is widely used as a reducing agent (in acid solution), and in electrolytic baths for tin-plating. Tin(II) chloride should not be confused with the other chloride of tin; tin(IV) chloride or stannic chloride (SnCl4).

  1. ^ "Tin (inorganic compounds, as Sn)". Immediately Dangerous to Life or Health Concentrations (IDLH). National Institute for Occupational Safety and Health (NIOSH).
  2. ^ Record in the GESTIS Substance Database of the Institute for Occupational Safety and Health