Tetramethylammonium bromide
Also known as: TMAB, tetramethylazanium,bromide, N,N,N-trimethylmethanaminium bromide, Ammonium, tetramethyl-, bromide, Methanaminium, N,N,N-trimethyl-, bromide, Tetramethylaminium bromide
Tetramethylammonium bromide (CAS 64-20-0) is a compound in the Organohalogen Compounds category listed in the Jingsj chemical database. It has the molecular formula C4H12BrN and a molecular weight of 154.049 g/mol. Key properties include a melting point of >300 °C(lit.), a boiling point of >360°C, a density of 1,56 g/cm3 and a flash point of NotºConsidered to be a fire hazard. It is classified under GHS with signal word Danger and hazard statements H300, H315 — Causes skin irritation and H319 — Causes serious eye irritation. No supplier offers are currently listed; request a quote. Record last updated Nov 3, 2026.
- CAS No.
- 64-20-0
- Jingsj CID
- J-21453-9
- Molecular Formula
- C4H12BrN
- Molecular Weight
- 154.049 g/mol
- Category
- Organohalogen Compounds
- Last updated
- 11/3/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | >300 °C(lit.) |
|---|---|
| Boiling Point | >360°C |
| Density | 1,56 g/cm3 |
| Flash Point | NotºConsidered to be a fire hazard |
| Exact Mass | 153.015305 |
| Additional Property | soluble |
GHS Safety & Compliance
- H300
- H315 — Causes skin irritation
- H319 — Causes serious eye irritation
- H335 — May cause respiratory irritation
Customs & Trade Information
| HS Code | 29239000 |
|---|
Frequently Asked Questions
What is the CAS number of Tetramethylammonium bromide?
The CAS number of Tetramethylammonium bromide is 64-20-0.
What are the molecular formula and molecular weight of Tetramethylammonium bromide?
Tetramethylammonium bromide has molecular formula C4H12BrN and molecular weight 154.049 g/mol.
Is Tetramethylammonium bromide hazardous?
Tetramethylammonium bromide has GHS signal word Danger and hazard statements H300; H315 — Causes skin irritation; H319 — Causes serious eye irritation.
What are the upstream and downstream products of Tetramethylammonium bromide?
For Tetramethylammonium bromide, Upstream Products: Dimethyl Carbonate, Epibromohydrin, Trimethylamine; Downstream Products: N,N-Dimethylethanamine, Tetramethylammonium p-toluenesulfonate, Tetramethylammonium dichloroiodate.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "Tetramethylammonium bromide (CAS 64-20-0)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-21453-9 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.