Dibutyltin dichloride

Structural formula
General
Surname	Dibutyltin dichloride
other names	Dibutyl dichlorotin Dibutyl dichlorostannane DBTC Tin dibutyl dichloride
Molecular formula	C 8 H 18 Cl 2 Sn
Brief description	Slightly volatile, white to yellow solid with a pungent odor
External identifiers / databases
CAS number 683-18-1 EC number 211-670-0 ECHA InfoCard 100.010.610 PubChem 12688 Wikidata Q18411326
properties
Molar mass	303.85 g mol −1
Physical state	firmly
density	1.37-1.40 g · cm −3
Melting point	37-40 ° C
boiling point	148 ° C (at 16 hPa )
solubility	very heavy in water (0.32 g l −1 at 20 ° C) soluble in ether and benzene
Refractive index	1,499
safety instructions
GHS hazard labeling from  Regulation (EC) No. 1272/2008 (CLP) , expanded if necessary danger H and P phrases H: 301-312-330-314-341-360FD-372-410 P: 201-273-280-301 + 330 + 331-302 + 352-304 + 340-305 + 351 + 338-308 + 310
Authorization procedure under REACH	of particular concern : toxic for reproduction ( CMR )
Toxicological data	50 mg kg −1 ( LD 50 ,  rat ,  oral )
As far as possible and customary, SI units are used. Unless otherwise noted, the data given apply to standard conditions . Refractive index: Na-D line , 20 ° C

Dibutyltin dichloride is a chemical compound of chlorine from the group of organotin compounds .

presentation

Dibutyltin dichloride can be obtained by reacting tetrabutyltin with tin (IV) chloride .

properties

Dibutyltin dichloride is a flammable, less volatile, white to yellow solid with a pungent odor, which is very sparingly soluble in water and slowly decomposes in it. In benzene it has a dipole moment of 4.38 Debye .

use

Dibutyltin dichloride was used in a concentration of 0.3 to 3% as a stabilizer for PVC . It is also used as an additive in rubber, as a catalyst in the manufacture of polyurethanes and silicones. So it is in insulation and coatings, food packaging, T-shirts, polyurethane gloves, sanitary napkins, medical devices, cellophane packaging and plush toys, PVC plastics (water pipes, packaging material, textile products), silicone rubber (sealants, dental products, paper coatings), polyurethanes (Foam plastics, adhesives / sealants), glass (coatings), insulation in electronic products and cables, contain worming agents for poultry.

Individual evidence

1. ↑ ^{a b c d e} Poisons Information Monograph (PIM) for dibutyltine dichloride , accessed December 9, 2014.
2. ↑ ^{a b c d e f g h i j} Entry on dibutyltin dichloride in the GESTIS substance database of the IFA , accessed on January 9, 2019(JavaScript required) .
3. ↑ Entry on Dibutyltin dichloride in the Classification and Labeling Inventory of the European Chemicals Agency (ECHA), accessed on August 1, 2016. Manufacturers or distributors can expand the harmonized classification and labeling .
4. ↑ Entry in the SVHC list of the European Chemicals Agency , accessed on October 18, 2015.
5. ↑ Stuart Dobson, Paul Howe, Peter Floyd: Mono and Disubstituted Methyltin, Butyltin, and Octyltin Compounds . World Health Organization, 2006, ISBN 92-4153073-1 , p. 32 ( limited preview in Google Book search).
6. ↑ Jörg Lorberth, Heinrich Nöth: Dipole moments of some organotin chlorides . In: Chemical Reports . tape 98 , no. 3 , March 1965, p. 969 , doi : 10.1002 / cber.19650980342 .
7. ↑ Federal Institute for Occupational Safety and Health: REACH-CLP-Biocide Helpdesk - Information on the candidate substance ( Memento of the original from October 20, 2014 in the Internet Archive ) Info: The archive link has been inserted automatically and has not yet been checked. Please check the original and archive link according to the instructions and then remove this notice. , accessed October 12, 2014