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474762

Sigma-Aldrich

Tin(II) chloride dihydrate

≥99.97% trace metals basis

Synonym(s):

Stannous dichloride dihydrate, Stannous chloride dihydrate

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About This Item

Linear Formula:
SnCl2 · 2H2O
CAS Number:
Molecular Weight:
225.65
EC Number:
MDL number:
UNSPSC Code:
12161600
PubChem Substance ID:
NACRES:
NA.22

Quality Level

Assay

≥99.97% trace metals basis

reaction suitability

core: tin
reagent type: catalyst

bp

652 °C (lit.)

mp

37-38 °C (dec.) (lit.)

SMILES string

O.O.Cl[SnH2]Cl

InChI

1S/2ClH.2H2O.Sn/h2*1H;2*1H2;/q;;;;+2/p-2

InChI key

FWPIDFUJEMBDLS-UHFFFAOYSA-L

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Application

Tin(II) chloride dihydrate can be used as a mild Lewis acid catalyst to synthesize:      
  • 3-Aminoimidazo[1,2-a]pyridines via three-component condensation reaction of aromatic aldehydes, 2-aminopyridines, and isonitriles.     
  • Pyrazolo[5,4-b]quinoline derivatives via cyclocondensation reaction of 5-amino-3-(arylamino)-1H-pyrazole-4-carbonitriles with cyclohexane-1,3-dione or dimedone.    
  • Polylactic acid from aqueous lactic acid in the presence of succinic anhydride.

It can also be used as a cocatalyst to synthesize indole derivatives by treating anilines with trialkanolamines in the presence of ruthenium as a catalyst.

Signal Word

Danger

Hazard Classifications

Acute Tox. 4 Inhalation - Acute Tox. 4 Oral - Aquatic Chronic 3 - Eye Dam. 1 - Met. Corr. 1 - Skin Corr. 1B - Skin Sens. 1 - STOT RE 2 Oral - STOT SE 3

Target Organs

Cardio-vascular system, Respiratory system

Storage Class Code

8B - Non-combustible corrosive hazardous materials

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

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