N,N,N',N'-Tetramethyl-p-phenylenediamine dihydrochloride

N,N,N',N'-四甲基对苯二胺二盐酸盐

Also known as: TMPD dihydrochloride, N,N,N',N'-Tetramethyl-1,4-benzenediamine dihydrochloride, N,N,N',N'-Tetramethyl-p-phenylenediamine dihydrochloride, N,N,N',N'-Tetramethyl-p-phenylenediammonium dichloride, Tetramethyl-p-phenylenediamine dihydrochloride, Wurster's reagent dihydrochloride

N,N,N',N'-Tetramethyl-p-phenylenediamine dihydrochloride (CAS 637-01-4) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C10H18Cl2N2 and a molecular weight of 237.169 g/mol. It is also known as TMPD dihydrochloride, N,N,N',N'-Tetramethyl-1,4-benzenediamine dihydrochloride and N,N,N',N'-Tetramethyl-p-phenylenediammonium dichloride. Key properties include a melting point of 222-224 °C(lit.), a boiling point of 260.6ºC at 760 mmHg and a flash point of 104.9ºC. GHS signal word: Warning. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
637-01-4
Jingsj CID
J-44634-1
Molecular Formula
C10H18Cl2N2
Chinese Name
N,N,N',N'-四甲基对苯二胺二盐酸盐
Molecular Weight
237.169 g/mol
Category
Organic Acids
Last updated
8/21/2026

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Physicochemical Properties

Melting Point222-224 °C(lit.)
Boiling Point260.6ºC at 760 mmHg
Flash Point104.9ºC

GHS Safety & Compliance

IrritantSignal word: Warning

Frequently Asked Questions

What is the CAS number of N,N,N',N'-Tetramethyl-p-phenylenediamine dihydrochloride?

The CAS number of N,N,N',N'-Tetramethyl-p-phenylenediamine dihydrochloride is 637-01-4.

What are the molecular formula and molecular weight of N,N,N',N'-Tetramethyl-p-phenylenediamine dihydrochloride?

N,N,N',N'-Tetramethyl-p-phenylenediamine dihydrochloride has molecular formula C10H18Cl2N2 and molecular weight 237.169 g/mol.

Is N,N,N',N'-Tetramethyl-p-phenylenediamine dihydrochloride hazardous?

N,N,N',N'-Tetramethyl-p-phenylenediamine dihydrochloride has GHS signal word Warning.

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

Last updated:

How to cite: Jingsj. "N,N,N',N'-Tetramethyl-p-phenylenediamine dihydrochloride (CAS 637-01-4)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-44634-1 (accessed 2026-10-22).

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