1,3-Bis(2,4,6-trimethylphenyl)imidazolium chloride

1,3-双(2,4,6-三甲基苯基)氯化咪唑

Also known as: 1,3-Dimesitylimidazolium chloride, 1,3-Bis(mesityl)imidazolium chloride, IMes·HCl, 1,3-Bis(2,4,6-trimethylphenyl)-1H-imidazol-3-ium chloride, 1,3-DiMesityl-1H-imidazol-3-ium chloride, 1,3-Bis(2,4,6-trimethylphenyl)imidazolium chloride (IMes HCl), MFCD02684541

1,3-Bis(2,4,6-trimethylphenyl)imidazolium chloride (CAS 141556-45-8) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C21H25ClN2 and a molecular weight of 340.89 g/mol. It is also known as 1,3-Dimesitylimidazolium chloride, 1,3-Bis(mesityl)imidazolium chloride and IMes·HCl. Key property: a melting point of >300 °C(lit.). 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.
141556-45-8
Jingsj CID
J-1326-2
Molecular Formula
C21H25ClN2
Chinese Name
1,3-双(2,4,6-三甲基苯基)氯化咪唑
Molecular Weight
340.89 g/mol
Category
Pharma Intermediates
Last updated
8/21/2026

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Physicochemical Properties

Melting Point>300 °C(lit.)
Exact Mass342.186279
PSA8.81000
LogP1.60840

GHS Safety & Compliance

IrritantSignal word: Warning
  • H315 — Causes skin irritation
  • H319 — Causes serious eye irritation
  • H335 — May cause respiratory irritation

Customs & Trade Information

HS Code2933290090
Summary2933290090. other compounds containing an unfused imidazole ring (whether or not hydrogenated) in the structure. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:20.0%

Frequently Asked Questions

What is the CAS number of 1,3-Bis(2,4,6-trimethylphenyl)imidazolium chloride?

The CAS number of 1,3-Bis(2,4,6-trimethylphenyl)imidazolium chloride is 141556-45-8.

What are the molecular formula and molecular weight of 1,3-Bis(2,4,6-trimethylphenyl)imidazolium chloride?

1,3-Bis(2,4,6-trimethylphenyl)imidazolium chloride has molecular formula C21H25ClN2 and molecular weight 340.89 g/mol.

Is 1,3-Bis(2,4,6-trimethylphenyl)imidazolium chloride hazardous?

1,3-Bis(2,4,6-trimethylphenyl)imidazolium chloride has GHS signal word Warning and hazard statements H315 — Causes skin irritation; H319 — Causes serious eye irritation; H335 — May cause respiratory irritation.

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

Last updated:

How to cite: Jingsj. "1,3-Bis(2,4,6-trimethylphenyl)imidazolium chloride (CAS 141556-45-8)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1326-2 (accessed 2026-10-28).

Data for reference only; verify specifications, grades and regulatory status with suppliers before purchase.