1,3-Dichloro-1,1,3,3-tetramethyldisiloxane
1,3-Dichloro-1,1,3,3-tetramethyldisiloxane (CAS 2401-73-2) is a silicon-based organochlorine compound with the molecular formula C4H12Cl2OSi2 and a molecular weight of 203.21 g/mol. This reactive intermediate serves as a versatile reagent in chemical synthesis, particularly for the introduction of silyl groups and in the protection of functional groups during organic reactions. Its specific reactivity makes it valuable in the preparation of specialised silicon-containing materials and compounds.
- Synonyms
- 3,3-tetramethyldisiloxane, 2401-73-2, (CH3)2Si(Cl)OSi(Cl)(CH3)2
Silylating Agent
This compound is employed as a silylating agent to introduce dimethylsilyl groups into organic molecules. It is particularly useful for protecting hydroxyl, amino, and carboxyl functionalities in complex syntheses.
Precursor for Silicones
It acts as a building block in the synthesis of functionalised siloxanes and silicone polymers. Its dichlorosilane structure allows for polymerisation and cross-linking reactions.
Organic Synthesis Intermediate
As a reactive intermediate, it facilitates various transformations in organic chemistry, enabling the construction of specialised organosilicon compounds with tailored properties for diverse applications.
| Molecular weight | 203.21 |
|---|---|
| Linear formula | (CH3)2Si(Cl)OSi(Cl)(CH3)2 |
| Assay | 97% |
| Boiling point | 138 °C(lit.) |
| Density | 1.039 g/mL at 25 °C(lit.) |
| Refractive index | n20/D 1.407(lit.) |
Hazard statements
- H225Highly flammable liquid and vapour
- H314Causes severe skin burns and eye damage
Precautionary statements
- P210Keep away from heat, sparks and open flames. No smoking
- P280Wear protective gloves, clothing and eye/face protection
- P305IF IN EYES
- P310Immediately call a POISON CENTER or doctor
| Protective equipment | Faceshields, full-face respirator (US), Gloves, Goggles, multi-purpose combination respirator cartridge (US), type ABEK (EN14387) respirator filter |
|---|---|
| Flash point | 15 °C / 59 °F |
| Transport (UN / ADR) | UN 2985 8(3) / PGII |
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | F,C |
| Risk statements (R) | 11-34 |
| Safety statements (S) | 16-26-27-36/37/39-45 |
Hazard information is provided for guidance. Always consult the product Safety Data Sheet (SDS), available on request, before handling.
Documentation
Every batch ships with a Certificate of Analysis covering assay, identity and purity; the grade is confirmed against your enquiry. Safety Data Sheets and technical data sheets are available on request.
Supply & logistics
Samples for technical evaluation; bulk MOQ by grade and packaging. In-stock material ships in 7–10 working days, worldwide, with full export documentation.
What is 1,3-Dichloro-1,1,3,3-tetramethyldisiloxane used for?
+
1,3-Dichloro-1,1,3,3-tetramethyldisiloxane is primarily used as a silylating agent in organic synthesis and as a precursor for the preparation of silicones and other organosilicon compounds. It is valuable for protecting functional groups and introducing dimethylsilyl moieties.
What is the CAS number and chemical formula for 1,3-Dichloro-1,1,3,3-tetramethyldisiloxane?
+
The CAS number is 2401-73-2, and its linear chemical formula is (CH3)2Si(Cl)OSi(Cl)(CH3)2.
What grade and purity does Tech Serve Solutions supply?
+
Tech Serve Solutions supplies 1,3-Dichloro-1,1,3,3-tetramethyldisiloxane with an assay of 97%. This is a technical grade product; TSS does not represent it as USP, BP, or EP grade.
What are the primary safety hazards associated with this chemical?
+
This compound is highly flammable (Flash Point 15 °C) and causes severe skin burns and eye damage (H225-H314). It requires careful handling with appropriate personal protective equipment, including gloves, goggles, and respiratory protection, in a well-ventilated area.
How is 1,3-Dichloro-1,1,3,3-tetramethyldisiloxane typically packaged and shipped?
+
The compound is packaged in accordance with UN 2985, Class 8(3), Packing Group II regulations for hazardous materials. TSS exports this chemical globally, adhering to all relevant transport and customs requirements.
How can I request a sample or a quote for this product?
+
To request a sample or a quote, please contact the TSS sales team via the website or by phone. Kindly provide your contact details and the required quantity.
▶ Related products
1-(2-Fluorobenzyl)piperazine
C11H15FN2
Chemical Synthesis
1-(2-Fluorophenyl)biguanide hydrochloride
Chemical Synthesis
1-(2-Fluorophenyl)cyclopropanecarboxylic acid
C10H9FO2
Chemical Synthesis
1-(2-Fluorophenyl)piperazine
C10H13FN2
Chemical Synthesis
1-(2-Fluorophenyl)piperazine monohydrochloride
C10H13FN2 · HCl
Chemical Synthesis
1-(2-Furoyl)-1H-benzotriazole
C11H7N3O2
Chemical Synthesis
1-(2-Furoyl)piperazine
C9H12N2O2
Chemical Synthesis
1-(2-Hydroxy-5-methylphenyl)-3-phenyl-1,3-propanedione
Chemical Synthesis
▶ Explore more
3-Methyl-1,5-di-p-tolyl-1,4-pentazadiene
Chemical Synthesis
3-Methyl-1,5-pentanediol
Chemical Synthesis
3-Methyl-1-(2-methylphenyl)-1H-pyrazol-5-amine
C11H13N3
Chemical Synthesis
3-Methyl-1-(3′-sulfoamidophenyl)-5-pyrazolone
C10H11N3O3S
Chemical Synthesis