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Secondary Alkanolamine · CAS 109-83-1

N-Methylethanolamine

CH3NHCH2CH2OH Molar mass 75.11 g/mol

The secondary alkanolamine supplied by Chelora Chemicals — a solvent and solubiliser in gas treating and coatings, and the key intermediate behind sarcosine and several pharmaceutical actives — exported from Indonesia with full batch documentation on every shipment.

Identification Sheet REP.
IUPAC name2-(Methylamino)ethanol
CAS number109-83-1
Molecular formulaCH₃NHCH₂CH₂OH
Molar mass75.11 g/mol
AppearanceColourless liquid
Common synonymsN-Methylethanolamine, 2-(Methylamino)ethanol, MMEA
Melting Point–4.5 °Clit.
Boiling Point158.1 °Cat 1 atm
Specific Gravity0.935at 20 °C
Flash Point85 °Cclosed cup, approx.
AppearanceColourless liquidammoniacal odour
Purity Offered98% / 99%+technical & high-purity
01 / PRODUCT DOSSIER

What N-Methylethanolamine is, and why buyers source it

A working overview of the compound's chemistry, its place as a secondary alkanolamine, and the grades Chelora Chemicals keeps in regular supply.

N-Methylethanolamine combines a secondary amine (one N–H bond, one methyl group) with a terminal hydroxyl two carbons away, giving it the dual reactivity typical of alkanolamines: the nitrogen is nucleophilic and moderately basic, while the hydroxyl can be esterified, etherified or oxidised independently. The two functional groups are close enough to participate together in ring-forming and chelating chemistry, but far enough apart that each can also be addressed selectively.

At room temperature it is a colourless, viscous liquid with an ammoniacal odour, fully miscible with water and most polar organic solvents. It is handled with the solvent-class precautions typical of alkanolamines, with added corrosivity caution given its skin and eye hazard profile.

Where it fits in the synthesis chain

N-Methylethanolamine is used as a solvent in natural gas processing, and as a solubiliser and stabiliser in water- and solvent-based paints and coatings; it also serves as a cation neutraliser and chain extender in cathodic dip-coating (electrodeposition) processes. As a chemical intermediate, it is the precursor to sarcosine (N-methylglycine), to choline and dimethylaminoethanol via further methylation routes, to N-methylaziridine, and to pharmaceutical actives including the antidepressant mianserin and the analgesic nefopam. It is also used as a brightener when bleaching cotton-polyester fabric blends.

Grades we supply

Chelora Chemicals offers N-Methylethanolamine in technical grade (≈98% assay) for standard coatings and gas-treating applications, and high-purity grade (99%+) for pharmaceutical-intermediate synthesis sensitive to colour and trace-impurity content. Both grades are supplied with a batch-wise certificate of analysis.

02 / MANUFACTURING ROUTE

How N-Methylethanolamine is made

An overview of the production route for orientation purposes. Our manufacturing partners' own process parameters and in-process controls are proprietary and are not disclosed beyond what is needed to interpret the certificate of analysis.

N-Methylethanolamine is manufactured by reacting ethylene oxide with an excess of methylamine (typically more than two-fold excess) in aqueous solution within a continuous-flow reactor: C₂H₄O + CH₃NH₂ → CH₃NHCH₂CH₂OH. The excess of methylamine favours the mono-substituted product over the di-substituted by-product, methyldiethanolamine, which still forms in smaller quantity and is separated by fractional distillation after the excess methylamine and water are removed.

Why the ethylene oxide/methylamine route is preferred

Direct alkoxylation of methylamine with ethylene oxide is continuous and scalable, and using an excess of methylamine keeps the mono-substituted product as the major fraction, giving good overall yield with a straightforward downstream purification.

03 / APPLICATIONS

Industries and processes that use it

N-Methylethanolamine is consumed by gas-treating, coatings and pharmaceutical-intermediate chemistry. The fields below account for most of the demand we see through our export desk.

Field 01

Natural Gas Treating Solvent

Used as a solvent component in natural gas processing, drawing on its amine basicity for acid-gas interaction.

Field 02

Coatings Solubiliser & Cathodic Dip-Coating Agent

A solubiliser and stabiliser in water- and solvent-based paints and coatings, and a cation neutraliser and chain extender in cathodic dip-coating.

Field 03

Pharmaceutical Intermediate Chemistry

A precursor to sarcosine, choline, dimethylaminoethanol, N-methylaziridine, and pharmaceutical actives including mianserin and nefopam.

Field 04

Textile Brightening Agent

Used as a brightener when bleaching cotton-polyester fabric blends.

04 / REACTION CHEMISTRY

How the molecule is typically carried forward

The secondary amine's nucleophilicity and the independent hydroxyl group govern almost all of this molecule's further reaction chemistry. Reaction classes below account for most of the ways N-Methylethanolamine is converted into a finished intermediate.

N-Methylation to Choline-Type Products

Further methylation of the nitrogen gives dimethylaminoethanol and, ultimately, choline-type quaternary products.

Oxidation to Sarcosine

Oxidation of the hydroxymethyl terminus gives sarcosine (N-methylglycine), an amino acid derivative used in surfactant and personal-care chemistry.

Ring Closure to N-Methylaziridine

Intramolecular cyclisation gives N-methylaziridine, a reactive three-membered-ring intermediate used in further specialty synthesis.

Amide / Pharmaceutical Intermediate Formation

Serves as the amine component in condensation sequences toward pharmaceutical actives such as mianserin and nefopam.

05 / RELATED BUILDING BLOCKS

N-Methylethanolamine against other alkanolamines we supply

Buyers sourcing this secondary alkanolamine often need a related tertiary or hybrid alkanolamine for a parallel step. A quick reference to what else is on our regular supply list.

ProductCAS NumberCategoryNotes
N-Methylethanolamine109-83-1Secondary alkanolamineThe product on this page — the mono-N-methylated ethanolamine in our range.
N,N-Dimethylethanolamine108-01-0Tertiary alkanolamineThe fully N-methylated relative, used in gas treating and coatings — see its product page.
N,N-Diethylethanolamine100-37-8Tertiary alkanolamineThe N,N-diethylated relative, used in pharmaceutical and gas-treating chemistry — see its product page.
Aminoethylethanolamine111-41-1Hybrid alkanolamineA related hybrid amine/alkanolamine elsewhere in our range — see its product page.

Exact physical constants and purity specifications are confirmed per batch on the certificate of analysis — treat the notes above as a sourcing guide, not a specification sheet, for products other than N-Methylethanolamine.

06 / HAZARD & HANDLING

Safety classification at a glance

Based on GHS classification as commonly listed for this substance. This is a summary for orientation only — always work from the current safety data sheet supplied with your specific batch.

H302

Harmful if swallowed.

H312

Harmful in contact with skin.

H314

Causes severe skin burns and eye damage.

PPE Standard

Impervious gloves, chemical splash goggles or a face shield are the baseline for routine handling.

Ventilation

Use in a well-ventilated area given the compound's ammoniacal odour and corrosive nature.

Environmental Handling

Avoid any release to drains or waterways as a general amine-handling precaution.

Storage Compatibility

Keep away from strong oxidising agents and strong acids.

Signal word

Danger — GHS05 corrosive and GHS07 harmful pictograms apply.

This compound causes severe skin burns and eye damage, and is harmful if swallowed or in contact with skin. It must be handled with impervious gloves and splash-proof eye protection in a well-ventilated area. Full first-aid, storage, spill and PPE guidance is in the MSDS issued with every shipment, and should be read in full before this material is handled.

07 / STORAGE & SHELF LIFE

Keeping it on spec between delivery and use

General storage guidance for this grade. Site-specific storage rules, segregation requirements and re-test intervals should follow your own EHS procedures and the MSDS issued with your batch.

Storage TemperatureCool, ambient
ContainerSealed drums / IBC
Typical Shelf Life24 months, unopened
Keep Away FromStrong oxidizers, strong acids
Beyond Shelf LifeRe-assay before use

Store in a cool, dry, well-ventilated area, in tightly closed original packaging, segregated from strong oxidizing agents and strong acids. If a batch is held past its retest date, re-check assay, colour and water content before use.

08 / PACKING & EXPORT

How it ships from Indonesia

Standard packing and export terms for this product. Confirm exact figures against your order — they vary slightly by destination and quantity.

Standard Packing200 kg drums
Bulk PackingIBC on request
Min. OrderFrom 1 drum
Lead Time2 – 3 weeks
Export TermsFOB · CFR · CIF
09 / QUALITY & DOCUMENTATION

What travels with every batch

Specification is agreed before the purchase order, not discovered on arrival. Every shipment of N-Methylethanolamine leaves with a documented, checkable paper trail.

Doc 01

Certificate of Analysis

Batch-wise assay (by GC), colour and water content, issued against the agreed specification so your QC team can check it, not just file it.

Doc 02

Safety Data Sheet

GHS-format SDS in English covering hazard classification, handling, storage, first-aid and spill response for the exact grade shipped.

Doc 03

Technical Data Sheet

Reference physical and chemical properties, recommended storage and typical applications, for internal circulation to your process or R&D teams.

Doc 04

Certificate of Origin

Confirms Indonesian origin for customs clearance and any preferential-duty claim at your destination port.

Doc 05

Dangerous Goods Declaration

UN packing group, classification and shipper's declaration prepared ahead of loading so documentation never holds up customs.

Doc 06

Third-Party Inspection

Independent pre-shipment inspection and re-sampling can be arranged on request, at your cost, for buyers who require it as a matter of policy.

10 / FAQ

Frequently asked questions

What buyers most often ask our sales desk about this grade.

01What is N-Methylethanolamine used for?+
As a solvent in natural gas treating, a solubiliser and stabiliser in paints and coatings, a cation neutraliser in cathodic dip-coating, and an intermediate for sarcosine, choline-type products and pharmaceutical actives including mianserin and nefopam.
02What is the CAS number of N-Methylethanolamine?+
Its CAS Registry Number is 109-83-1, with molecular formula CH₃NHCH₂CH₂OH and a molar mass of 75.11 g/mol.
03How is N-Methylethanolamine made?+
By reacting ethylene oxide with an excess of methylamine in aqueous solution, which favours the mono-substituted product over the methyldiethanolamine co-product.
04What purity grades does Chelora Chemicals supply?+
We supply technical grade (around 98% assay) for standard coatings and gas-treating applications, and high-purity grade (99%+) for pharmaceutical-intermediate synthesis. Each batch ships with a certificate of analysis.
05Is N-Methylethanolamine hazardous?+
Yes. It causes severe skin burns and eye damage, and is harmful if swallowed or in contact with skin. It must be handled with the PPE and precautions specified in the MSDS supplied with each shipment.
06What is the difference between this and N,N-Dimethylethanolamine?+
N-Methylethanolamine retains one N-H bond (a secondary amine), while N,N-Dimethylethanolamine has both nitrogen positions methylated (a tertiary amine); the two have different reactivity and are not interchangeable.
07What packing options are available?+
Standard packing is 200 kg drums, with IBC shipment available for bulk orders.
08How long does delivery take?+
Typical lead time is two to three weeks plus transit, depending on whether the grade is ex-stock or made to order and your destination port. A firm date is confirmed in the written quotation.
09Can I get a sample before placing a bulk order?+
Yes. Pre-shipment samples and a batch certificate of analysis can be arranged so your QC team can verify the specification before committing to volume.
10Do you supply other alkanolamines as well?+
Yes, we also supply N,N-Dimethylethanolamine, N,N-Diethylethanolamine and Aminoethylethanolamine, all related alkanolamines.
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