| Identification | More | [Name]
1,3-DICHLOROTETRAMETHYLDISILOXANE | [CAS]
2401-73-2 | [Synonyms]
1,3-DICHLORO-1,1,3,3-TETRAMETHYLDISILOXANE
1,3-DICHLOROTETRAMETHYLDISILOXANE
1,3-dichloro-1,1,3,3-tetramethyl-disiloxan
bis(chlorodimethylsilyl)ether
Disiloxane, 1,3-dichloro-1,1,3,3-tetramethyl-
disiloxane,1,3-dichloro-1,1,3,3-tetramethyl-
Sym-dichlorotetramethyldisiloxane
1,1,3,3-Tetramethyl-1,3-dichlorodisiloxane
1,3-DICHLOROTETRAMETHYLDISILOXANE 96%
1,3-Dichloro-1,1,3,3-tetramethylpropanedisiloxane
Oxybis(chlorodimethylsilane)
Oxybis(dimethylchlorosilane) | [EINECS(EC#)]
219-278-1 | [Molecular Formula]
C4H12Cl2OSi2 | [MDL Number]
MFCD00018088 | [Molecular Weight]
203.21 | [MOL File]
2401-73-2.mol |
| Chemical Properties | Back Directory | [Appearance]
clear colorless liquid | [Melting point ]
-37 °C | [Boiling point ]
138 °C (lit.) | [density ]
1.039 g/mL at 25 °C(lit.)
| [refractive index ]
n20/D 1.407(lit.)
| [Fp ]
15 °C
| [storage temp. ]
Flammables area | [form ]
liquid | [color ]
Colorless to Almost colorless | [Specific Gravity]
1.038 | [Water Solubility ]
Reacts with water. | [Hydrolytic Sensitivity]
8: reacts rapidly with moisture, water, protic solvents | [Sensitive ]
Moisture Sensitive | [BRN ]
1741218 | [InChIKey]
DMEXFOUCEOWRGD-UHFFFAOYSA-N | [CAS DataBase Reference]
2401-73-2(CAS DataBase Reference) | [EPA Substance Registry System]
Disiloxane, 1,3-dichloro-1,1,3,3-tetramethyl- (2401-73-2) |
| Safety Data | Back Directory | [Symbol(GHS) ]
 
GHS02,GHS05 | [Signal word ]
Danger | [Hazard statements ]
H225-H314 | [Precautionary statements ]
P210-P233-P240-P280-P303+P361+P353-P305+P351+P338 | [Hazard Codes ]
F,C | [Risk Statements ]
R11:Highly Flammable.
R34:Causes burns. | [Safety Statements ]
S16:Keep away from sources of ignition-No smoking .
S26:In case of contact with eyes, rinse immediately with plenty of water and seek medical advice .
S27:Take off immediately all contaminated clothing .
S36/37/39:Wear suitable protective clothing, gloves and eye/face protection .
S45:In case of accident or if you feel unwell, seek medical advice immediately (show label where possible) . | [RIDADR ]
UN 2985 3/PG 2
| [WGK Germany ]
3
| [F ]
10-21 | [TSCA ]
Yes | [HazardClass ]
3 | [PackingGroup ]
II | [HS Code ]
29319090 |
| Hazard Information | Back Directory | [Chemical Properties]
clear colorless liquid | [Uses]
1,3-Dichlorotetramethyldisiloxane is used to produce 1,1,3,3-tetramethyl-disiloxane-1,3-diol. It is also used as Chemical Additives. Pharmaceutical intermediates. | [Synthesis]
General procedure: The chlorination reaction needs to be carried out in THF to ensure that all Si-H bonds are chlorinated, using TCCA as the chlorinating agent (molar ratio 1:1, TCCA:siloxane). This was done as follows: 1,1,3,3-tetramethyldisiloxane and THF (ratio 20 ml THF/g siloxane) were added to the reaction flask and the mixture was cooled to -20 °C. TCCA was added in batches with vigorous stirring, and after the addition of TCCA, stirring was continued for 15 min, after which the cooling bath was removed and the reaction mixture was allowed to warm slowly to room temperature. It should be noted that the chain length of the siloxane, the type of substituent and the position of the Si-H bond may affect the method of isolation and characterization of the subsequent products. Upon completion of the reaction, THF and unreacted TCCA should be removed immediately to avoid denaturation of the products during storage. | [References]
[1] Journal of Organometallic Chemistry, 2007, vol. 692, # 10, p. 1892 - 1897
[2] Journal of Organometallic Chemistry, 2018, vol. 875, p. 1 - 4
[3] Journal of the Chemical Society [Section] A: Inorganic, Physical, Theoretical, 1970, p. 1641 - 1642 |
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