683-18-1 Usage
Chemical Description
Dibutyltin dichloride is an organotin compound that is used as a catalyst in various chemical reactions.
Chemical Properties
Dibutyltin dichloride is a white to beige crystalline low melting mass. soluble in organic solvents such as benzene, toluene, ether and alcohols. It is difficult to dissolve in water. Decomposition (hydrolysis) occurs in hot water. Dibutyltin dichloride is flammable, low volatile and has a pungent odor.
Uses
Dibutyltin dichloride is used as an organotin intermediate. It serves as heat and light stabilizer for polyvinyl chloride plastics. It is also used in the preparation of methyl 2-(methoxycarbonylmethyl)-5-iodobenzene by reacting with 2,5-diiodobenzoic acid. It acts as an esterification catalyst and a veterinary vermicide and tapeworm remedy. Further, it is used as ion exchange agent, process regulators and processing aids.
Preparation
Dibutyltin dichloride is manufactured from crude tetrabutyltin and tin tetrachloride and is usually catalysed with aluminium trichloride (Blunden & Evans, 1989; Gaver, 1997; Thoonen et al., 2001)
Safety Profile
Poison by ingestion,
intravenous, and intraperitoneal routes.
Moderately toxic by skin contact. A severe
skin and eye irritant. Experimental
reproductive effects. Mutation data
reported. See also TIN COMPOUNDS.
Combustible when exposed to heat or
flame. A dangerous material; emits highly
toxic fumes of HCl; wdl react with water or
steam to produce heat and toxic fumes; can
react vigorously with oxidizing materials. To Poison by ingestion,
intravenous, and intraperitoneal routes.
Moderately toxic by skin contact. A severe
skin and eye irritant. Experimental
reproductive effects. Mutation data
reported. See also TIN COMPOUNDS.
Combustible when exposed to heat or
flame. A dangerous material; emits highly
toxic fumes of HCl; wdl react with water or
steam to produce heat and toxic fumes; can
react vigorously with oxidizing materials. Tofight fue, use water, foam, CO2, dry
chemical.
Check Digit Verification of cas no
The CAS Registry Mumber 683-18-1 includes 6 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 3 digits, 6,8 and 3 respectively; the second part has 2 digits, 1 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 683-18:
(5*6)+(4*8)+(3*3)+(2*1)+(1*8)=81
81 % 10 = 1
So 683-18-1 is a valid CAS Registry Number.
InChI:InChI=1/2C4H9.2ClH.Sn/c2*1-3-4-2;;;/h2*1,3-4H2,2H3;2*1H;/q;;;;+2/p-2/rC8H18Sn.2ClH/c1-3-5-7-9-8-6-4-2;;/h3-8H2,1-2H3;2*1H/q+2;;/p-2
683-18-1Relevant articles and documents
Davies,Symes
, p. 1892,1894,1895 (1969)
Preparation method of monobutyltin oxide
-
Paragraph 0068; 0070; 0071; 0085-0155, (2017/08/29)
The invention provides a preparation method of monobutyltin oxide. The method includes the steps of firstly, adding tetrabutyl tin into a reactor, evenly stirring, slowly dropwise adding tin tetrachloride, then stirring for 30 minutes, heating to 140 DEG C, and performing heat-preservation reaction for 4-8 hours to obtain the mixed solution of monobutyltin trichloride and dibutyltin dichloride; secondly, heating the mixed solution of the monobutyltin trichloride and the dibutyltin dichloride to 95-100 DEG C, and collecting the monobutyltin trichloride; thirdly, adding the monobutyltin trichloride collected in the second step, surfactant and an organic solvent into a reactor, evenly stirring, slowly dropwise adding a sodium hydroxide solution, then heating to 90 DEG C, performing heat-preservation reaction for 3.5-4 hours, cooling to room temperature, filtering to obtain crude monobutyltin oxide, washing the crude monobutyltin oxide until the crude monobutyltin oxide is neutral, and performing reduced-pressure drying at 80 DEG C for 12 hours to obtain the monobutyltin oxide, wherein the surfactant is chitosan modified imidazoline ampholytic surfactant and quaternized polyvinyl alcohol.
PREPARATIONS OF META-IODOBENZYLGUANIDINE AND PRECURSORS THEREOF
-
, (2016/05/19)
The present disclosure provides purified forms of iobenguane and preparations of a precursor to iobenguane, such as a polymer, the polymer comprising a monomer of formula (I) or a pharmaceutically acceptable salt thereof, the preparation comprising leachable tin at a level of 0 ppm to 850 ppm.
Five-membered arsenic-sulfur-nitrogen heterocycles, RAs(S2N 2) (R = Me, Et, iPr, tBu, Ph, Mes)
Matuska, Vit,Slawin, Alexandra M. Z.,Derek Woollins
, p. 3064 - 3069 (2010/06/14)
A series of 5-alkyl/aryl-1,3λ4δ2,2,4,5- dithiadiazarsoles RAs(S2N2) (R = Me, Et, iPr, tBu, Ph, Mes) were prepared by a ligand exchange between [ nBu2Sn(S2N2)]2 and the corresponding organodihalogenoarsines RAsX2 (X = Cl, I). All products were characterized by NMR, IR, and Raman spectroscopies and mass spectrometry. The crystal structures of the aryldithiadiazarsoles (R = Ph, Mes) were determined.
