1,2-dichloro-1,1,2,2-tetramethyldisilane

Also known as: 1,2-dichlorotetramethyldisilane, 1,2-dichloro-tetramethyldisilane, dichlorotetramethyldisilane, 1,1,2,2-tetramethyldichlorodisilane, 1,2-dichloro-1,1,2,2-tetramethyl-disilane, chloro-[chloro(dimethyl)silyl]-dimethylsilane, Disilane, 1,2-dichloro-1,1,2,2-tetramethyl-, MFCD00078528

1,2-dichloro-1,1,2,2-tetramethyldisilane (CAS 4342-61-4) is a compound in the Aliphatic Hydrocarbons category listed in the Jingsj chemical database. It has the molecular formula C4H12Cl2Si2 and a molecular weight of 187.215 g/mol. Key properties include a boiling point of 150.1±9.0 °C at 760 mmHg, a density of 1.0±0.1 g/cm3 and a flash point of 38.8±13.5 °C. It is classified under GHS with signal word Danger and hazard statements H226 — Flammable liquid and vapour and H314 — Causes severe skin burns and eye damage. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 4342-61-4
Jingsj CID: J-13300-6
Molecular Formula: C₄H₁₂Cl₂Si₂
Molecular Weight: 187.215 g/mol
Category: Aliphatic Hydrocarbons
Last updated: 8/21/2026

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Physicochemical Properties

Boiling Point	150.1±9.0 °C at 760 mmHg
Density	1.0±0.1 g/cm3
Flash Point	38.8±13.5 °C
Exact Mass	185.985458
LogP	4.52
Vapor Pressure	5.0±0.3 mmHg at 25°C
Refractive Index	1.419

GHS Safety & Compliance

Flammable / CorrosionSignal word: Danger

H226 — Flammable liquid and vapour
H314 — Causes severe skin burns and eye damage

Customs & Trade Information

HS Code	2931900090
Summary	2931900090. other organo-inorganic compounds. VAT:17.0%. Tax rebate rate:13.0%. Supervision conditions:AB(certificate of inspection for goods inward,certificate of inspection for goods outward). MFN tariff:6.5%. General tariff:30.0%

Frequently Asked Questions

What is the CAS number of 1,2-dichloro-1,1,2,2-tetramethyldisilane?

The CAS number of 1,2-dichloro-1,1,2,2-tetramethyldisilane is 4342-61-4.

What are the molecular formula and molecular weight of 1,2-dichloro-1,1,2,2-tetramethyldisilane?

1,2-dichloro-1,1,2,2-tetramethyldisilane has molecular formula C4H12Cl2Si2 and molecular weight 187.215 g/mol.

Is 1,2-dichloro-1,1,2,2-tetramethyldisilane hazardous?

1,2-dichloro-1,1,2,2-tetramethyldisilane has GHS signal word Danger and hazard statements H226 — Flammable liquid and vapour; H314 — Causes severe skin burns and eye damage.

What are the upstream and downstream products of 1,2-dichloro-1,1,2,2-tetramethyldisilane?

For 1,2-dichloro-1,1,2,2-tetramethyldisilane, Upstream Products: Hexamethyldisilane, 1,1,2-trichloro-1,2,2-trimethyldisilane, Benzyl chloride; Downstream Products: 1,4-Bis(dimethylchlorosilyl)benzene, Bis(2-methoxyphenyl)-1,1,2,2-tetramethyldisilane, Dodecamethylcyclohexasilane.

Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.

Last updated: 8/21/2026

How to cite: Jingsj. "1,2-dichloro-1,1,2,2-tetramethyldisilane (CAS 4342-61-4)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-13300-6 (accessed 2026-11-09).

Data for reference only; verify product details with suppliers before purchase.