1,3-Diphenyl-1,1,3,3-tetramethyldisilazane
Also known as: 1,3-Diphenyltetramethyldisilazane, 1,1,3,3-Tetramethyl-1,3-diphenyldisilazane, DPTMDS, Bis(dimethylphenylsilyl)amine, Bis(phenyldimethylsilyl)amine, Iminobis(dimethylphenylsilane), N-[Dimethyl(phenyl)silyl]-1,1-dimethyl-1-phenylsilanamine
1,3-Diphenyl-1,1,3,3-tetramethyldisilazane (CAS 3449-26-1) is a compound in the Aromatic Hydrocarbons category listed in the Jingsj chemical database. It has the molecular formula C16H23NSi2 and a molecular weight of 285.531 g/mol. Key properties include a boiling point of 330.2±0.0 °C at 760 mmHg, a density of 1.0±0.1 g/cm3 and a flash point of 144.6±19.3 °C. It is classified under GHS with signal word Warning and hazard statements H315 — Causes skin irritation, H319 — Causes serious eye irritation and H335 — May cause respiratory irritation. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 3449-26-1
- Jingsj CID
- J-23025-1
- Molecular Formula
- C16H23NSi2
- Molecular Weight
- 285.531 g/mol
- Category
- Aromatic Hydrocarbons
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Boiling Point | 330.2±0.0 °C at 760 mmHg |
|---|---|
| Density | 1.0±0.1 g/cm3 |
| Flash Point | 144.6±19.3 °C |
| Exact Mass | 285.136902 |
| PSA | 12.03000 |
| LogP | 5.83 |
| Vapor Pressure | 0.0±0.7 mmHg at 25°C |
| Refractive Index | 1.531 |
GHS Safety & Compliance
- H315 — Causes skin irritation
- H319 — Causes serious eye irritation
- H335 — May cause respiratory irritation
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 1,3-Diphenyl-1,1,3,3-tetramethyldisilazane?
The CAS number of 1,3-Diphenyl-1,1,3,3-tetramethyldisilazane is 3449-26-1.
What are the molecular formula and molecular weight of 1,3-Diphenyl-1,1,3,3-tetramethyldisilazane?
1,3-Diphenyl-1,1,3,3-tetramethyldisilazane has molecular formula C16H23NSi2 and molecular weight 285.531 g/mol.
Is 1,3-Diphenyl-1,1,3,3-tetramethyldisilazane hazardous?
1,3-Diphenyl-1,1,3,3-tetramethyldisilazane has GHS signal word Warning and hazard statements H315 — Causes skin irritation; H319 — Causes serious eye irritation; H335 — May cause respiratory irritation.
What are the upstream and downstream products of 1,3-Diphenyl-1,1,3,3-tetramethyldisilazane?
For 1,3-Diphenyl-1,1,3,3-tetramethyldisilazane, Upstream Products: Chlorodimethylphenylsilane, Dimethylphenylsilane, Urea; Downstream Products: Dimethylphenylsilanol, 1,3-Diphenyl-1,1,3,3-tetramethyldisiloxane.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "1,3-Diphenyl-1,1,3,3-tetramethyldisilazane (CAS 3449-26-1)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-23025-1 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.