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Thiobis(hexamethyldisilazane)

Also known as: Bis[bis(trimethylsilyl)amino] sulfide, Bis[bis(trimethylsilyl)amino]sulfane, N,N,N',N'-Tetrakis(trimethylsilyl)diaminosulfan, N,N,N',N'-Tetrakis(trimethylsilyl)sulfur diamide, Sulfoxylic diamide, tetrakis(trimethylsilyl)-, Sulfurbis[bis(trimethylsilyl)amide], 4-Thia-3,5-diaza-2,6-disilaheptane,2,2,6,6-tetramethyl-3,5-bis(trimethylsilyl)-

Thiobis(hexamethyldisilazane) (CAS 18243-89-5) is a compound in the Aliphatic Hydrocarbons category listed in the Jingsj chemical database. It has the molecular formula C12H36N2SSi4 and a molecular weight of 352.83500 g/mol. Key properties include a melting point of 65-67ºC(lit.), a boiling point of 142-143ºC15 mm Hg(lit.), a density of 0.886g/cm3 and a flash point of 141.2ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
18243-89-5
Jingsj CID
J-1359411-1
Molecular Formula
C12H36N2SSi4
Molecular Weight
352.83500 g/mol
Category
Aliphatic Hydrocarbons
Last updated
8/21/2026

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Physicochemical Properties

Melting Point65-67ºC(lit.)
Boiling Point142-143ºC15 mm Hg(lit.)
Density0.886g/cm3
Flash Point141.2ºC
Exact Mass352.16800
PSA31.78000
LogP5.49320
Appearancesolid
Vapor Pressure0.000624mmHg at 25°C
Refractive Index1.454

Customs & Trade Information

HS Code2931900090
Summary2931900090. 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 Thiobis(hexamethyldisilazane)?

The CAS number of Thiobis(hexamethyldisilazane) is 18243-89-5.

What are the molecular formula and molecular weight of Thiobis(hexamethyldisilazane)?

Thiobis(hexamethyldisilazane) has molecular formula C12H36N2SSi4 and molecular weight 352.83500 g/mol.

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

Last updated:

How to cite: Jingsj. "Thiobis(hexamethyldisilazane) (CAS 18243-89-5)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1359411-1 (accessed 2026-11-09).

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