2997-06-0

Basic information

• Product Name: N-methyl-hexanediyldiamine
• Synonyms: N-methyl-hexanediyldiamine
• CAS NO: 2997-06-0
• Molecular Weight: 130.233
• Mol File: 2997-06-0.mol
• Article Data: 1

Chemical Properties

• CAS DataBase Reference: N-methyl-hexanediyldiamine(CAS DataBase Reference)
• NIST Chemistry Reference: N-methyl-hexanediyldiamine(2997-06-0)
• EPA Substance Registry System: N-methyl-hexanediyldiamine(2997-06-0)

Safety Data

• Hazardous Substances Data: 2997-06-0(Hazardous Substances Data)

Usage

General Description

N-methyl-hexanediyldiamine is a chemical compound with the molecular formula C9H22N2. It is a diamine, meaning it contains two amino (NH2) groups, and its carbon chain consists of six carbon atoms. This chemical is commonly used in the production of various polymers, particularly polyamides and polyurethanes. It serves as a crosslinking agent in the formation of these polymers, contributing to their strength and durability. N-methyl-hexanediyldiamine is also utilized as a curing agent in epoxy resins and as a chemical intermediate in the synthesis of other compounds. It is a colorless to pale yellow liquid with a strong amine odor, and it is slightly soluble in water. N-methyl-hexanediyldiamine should be handled with caution, as it can cause irritation to the skin, eyes, and respiratory system upon exposure.

Upstream product

• 67-56-1 methanol 
• 124-09-4 1,6-Hexanediamine 

Relevant articles and documents

Continuous chemoselective methylation of functionalized amines and diols with supercritical methanol over solid acid and acid-base bifunctional catalysts

The selective N-methylation of bifunctionalized amines with supercritical methanol (scCH3OH) promoted by the conventional solid acids (H-mordenite, β-zeolite, amorphous silica-alumina) and acid-base bifunctional catalysts (Cs-P-Si mixed oxide and γ-alumina) was investigated in a continuous-flow, fixed-bed reactor. The use of scCH 3OH in the reaction of 2-aminoethanol with methanol (amine/CH 3OH = 1/10.8) over the solid catalysts led to a significant improvement in the chemoselectivity of the N-methylation. Among the catalysts examined, the Cs-P-Si mixed oxide provided the most efficient catalyst performance in terms of selectivity and reactivity at 300 °C and 8.2 MPa; the N-methylation selectivity in the products reaching up to 94% at 86% conversion. The present selective methylation was successfully applied to the synthesis of N-methylated amino alcohols and diamines as well as O-methylated ethylene glycol. Noticeably, ethoxyethylamine was less reactive, suggesting that the hydroxy group of the amino alcohols is a crucial structural factor in determining high reactivity and selectivity, possibly because of the tethering effect of another terminus, a hydroxo group, to the catalyst surface. The magic-angle-spinning NMR spectroscopy and X-ray diffraction analysis of the Cs-P-Si mixed oxide catalyst revealed that the acidic and basic sites originate from P2O5/SiO2 and Cs/SiO2, respectively, and the weak acid-base paired sites are attributed to three kinds of cesium phosphates on SiO2. The weak acid-base sites on the catalyst surface might be responsible for the selective dehydrative methylation.