Does BMA mean n-butyl methacrylate or isobutyl methacrylate?

In most commercial usage the bare abbreviation means the normal isomer, n-butyl methacrylate, CAS 97-88-1. The branched isomer, isobutyl methacrylate, is a different substance with its own identifiers and a different contribution to copolymer hardness, and the tertiary isomer is different again. Because all three are abbreviated loosely in day-to-day correspondence, an order written as BMA alone is ambiguous. Write the full chemical name and the CAS number on every enquiry, purchase order and goods-inwards record.

Why must the monomer not be blanketed with pure nitrogen?

Because the stabiliser used in commercial methacrylate monomers requires dissolved oxygen to function. It intercepts radicals by a mechanism that consumes oxygen, so a drum stripped of oxygen contains an inhibitor that is chemically present and functionally absent. The correct headspace is air, or air diluted with nitrogen to a specified oxygen content, never an inert blanket. This is one of the very few cases in a chemical store where displacing oxygen makes a material more dangerous rather than less, and it catches people whose instinct is trained on flammable solvents.

How should inhibitor content be read on a certificate?

As a starting condition rather than a permanent property. The certificate reports the inhibitor level at release; that level falls in storage as the stabiliser does its job, and it falls faster in warm conditions, in light and in the presence of contamination. A long-stored drum can meet its original certificate on every other line while having very little inhibitor left. Where storage has been long or uncertain, retest the inhibitor level before charging a reactor rather than relying on the release figure.

What is popcorn polymerisation and why does it matter here?

It is a self-propagating, expanding polymer growth that forms in dead legs, vapour spaces, valve bonnets and residues where inhibitor cannot reach. Once seeded it continues under conditions that would not start a normal polymerisation, and it grows mechanically enough to jam valves and distort equipment. The controls are housekeeping controls: no unswept dead legs, no long-standing residues, no lines left full between campaigns, and clean vessels before refilling. It is not a reason to avoid methacrylate monomers, but it is a reason to design the pipework as if the monomer were reactive, because it is.

How does the butyl ester change a copolymer compared with the methyl one?

The four-carbon ester side chain is flexible and bulky, so it loosens chain packing and lowers the temperature at which the polymer softens. Against the methyl ester it gives a softer, more flexible and more extensible polymer, better adhesion and easier film formation, at the cost of hardness and block resistance. Against the corresponding acrylate it gives a harder polymer with the weathering advantage of the methacrylate backbone. Formulators use it as the soft component of an all-methacrylate system, which keeps the durability while tuning flexibility.

Wat is N-Methylformamide?

N-Methylformamide is een chemische verbinding, geregistreerd onder CAS-nummer 123-39-7. Brutoformule: C2H5NO. Molaire massa: 59.07 g/mol. IUPAC: N-methylformamide.

Wat is het CAS-nummer van N-Methylformamide?

Het CAS-nummer van N-Methylformamide is 123-39-7 — een unieke identificatie van de Chemical Abstracts Service (CAS).

Wat is de brutoformule van N-Methylformamide?

Brutoformule: C2H5NO. Molaire massa: 59.07 g/mol. logP (XLogP3): -1. PSA: 29.1 Å².

Wat zijn de GHS-gevaren van N-Methylformamide?

Volgens de GHS-classificatie moet N-Methylformamide worden voorzien van de volgende gevarenaanduidingen: H360D (Kan het ongeboren kind schaden.), H312 (Schadelijk bij contact met de huid.).

Waar kan ik N-Methylformamide kopen?

N-Methylformamide is verkrijgbaar in onze winkel. Bekijk het product: https://epchems.online/products/n-methylformamide/

Waar komen de chemische gegevens voor N-Methylformamide vandaan?

De chemische gegevens voor N-Methylformamide zijn afkomstig van gezaghebbende bronnen: PubChem (NIH), ChEMBL (EBI). PubChem CID: 31254. Conform de CLP-verordening (EG 1272/2008), beschikbaar onder de CC-BY 4.0-licentie.

N-Methylformamide

CAS 123-39-7 · C₂H₅NO · MW 59.07 g/mol

Over N-Methylformamide

N-Methylformamide is een chemische verbinding, geregistreerd onder nummer CAS 123-39-7, met de brutoformule C₂H₅NO, en een molaire massa van 59.07 g/mol.

Het molecuul bevat 9 atomen verbonden door 8 chemische bindingen. De volledige systematische IUPAC-naam van deze verbinding is N-methylformamide. Het interactieve 3D-model hierboven toont de ruimtelijke rangschikking van de atomen — u kunt het met de muis draaien, met het scrollwiel inzoomen en schakelen tussen de weergavemodi skelet / Ball & Stick / Space Fill.

Wat de fysisch-chemische eigenschappen betreft, de verdelingscoëfficiënt logP = -1 (negatieve waarde, hydrofiele verbinding), polair oppervlak PSA = 29.1 Å², 1 donoren en 1 waterstofbrugacceptoren. Deze parameters zijn cruciaal bij de beoordeling van de biobeschikbaarheid en de interactie met biomoleculen.

De chemische gegevens voor deze verbinding zijn afkomstig van PubChem (NIH NLM NCBI), een van de grootste chemische databanken ter wereld. Alle informatie wordt automatisch bijgewerkt en verrijkt met vertalingen van GHS-gevarenaanduidingen conform de CLP-verordening (EG 1272/2008). De bovenstaande widget mag worden gebruikt voor educatieve, onderzoeks- en commerciële doeleinden.

Fysisch-chemische eigenschappen

Wzór sumaryczny	C₂H₅NO
Masa molowa	59.07 g/mol
IUPAC	N-methylformamide
SMILES	`CNC=O`
InChIKey	`ATHHXGZTWNVVOU-UHFFFAOYSA-N`
logP (XLogP3)	-1
PSA	29.1 Å²
HBD / HBA	1 / 1
PubChem CID	CID 31254 ↗

GHS-veiligheid

Sygnał: Niebezpieczeństwo

GHS07

GHS08

? — H360D

H312 — Działa szkodliwie w kontakcie ze skórą

Wetenschappelijke literatuur

Literatura naukowa

20 artykułów · 12 open access · Źródła: PubMed, OpenAlex, Semantic Scholar

📈 Timeline publikacji (20 artykułów)

Wysokość słupka = liczba artykułów w roku. Hover dla szczegółów.

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Thermodynamic Study of N-Methylformamide and N,N-Dimethyl-Formamide.

Růžička K, Štejfa V, Červinka C et al. (2024) · Molecules (Basel, Switzerland)

Cytowania: 5Open AccessDOI ↗PubMed ↗PDF ↗

How water links to cis and trans peptidic groups: the rotational spectrum of N-methylformamide-water.

et al. (2010)

Cytowania: 31$ PaywallDOI ↗PubMed ↗

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Carbonyl stretching band in amides as Lorentz oscillator. Insights into anharmonicity and local environment in the liquid phase from NIR and MIR spectra of N-methylformamide and di-N,N-methylformamide.

et al. (2025)

Cytowania: 4Open AccessDOI ↗PubMed ↗PDF ↗

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Use of N-methylformamide as a solvent in indium-promoted Barbier reactions en route to enediyne and epoxy diyne formation: comparison of rate and stereoselectivity in C-C bond-forming reactions with water.

et al. (2009)

Cytowania: 7Open AccessDOI ↗PubMed ↗PDF ↗

Photo-stability of peptide-bond aggregates: N-methylformamide dimers.

et al. (2014)

Cytowania: 15$ PaywallDOI ↗PubMed ↗

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Interfacial Structure and Interaction of Kaolinite Intercalated with N-methylformamide Insight from Molecular Dynamics Modeling.

et al. (2018)

Cytowania: 6Open AccessDOI ↗PubMed ↗PDF ↗

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One-Step, One-Lane Chemical DNA Sequencing by N-Methylformamide in the Presence of Metal Ions

Rodolfo Negri, Giovanna Costanzo, Raffaele Saladino et al. (1996) · BioTechniques

Cytowania: 26Open AccessDOI ↗PDF ↗

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Effects of urea on the aqueous solvation structure and dynamics of cis/trans-N-methylformamide: An insight from molecular dynamics simulation study

Chinmay Parida, Pragin Chettiyankandy, Apramita Chand et al. (2024) · Chemical Physics Impact

Cytowania: 1Open AccessDOI ↗PDF ↗

CH stretching vibration of N-methylformamide as a sensitive probe of its complexation: infrared matrix isolation and computational study.

et al. (2011)

Cytowania: 7$ PaywallDOI ↗PubMed ↗

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Computational investigation of the gas-phase formation and spectroscopic analysis of cis-N-Methylformamide

Jerusha Singh Mahima, Mishra Pravi, Pandey Parmanand et al. (2026) · EPJ Web of Conferences

Open AccessDOI ↗PDF ↗

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Process optimization for suppressing N-methylformamide hydrolysis and methylamine generation in stripper solution

Jinjuan Ni, Huilai Liu, Dali Bao et al. (2026) · Desalination and Water Treatment

Open AccessDOI ↗PDF ↗

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Viscosities and thermodynamics of viscous flow of N-methylformamide/N-methylacetamide + polyethylene glycol 200/300/400 binary systems: Experimental and theoretical exploration

Anil Kumar Nain, Abhimanyu Nain (2026) · Chemical Thermodynamics and Thermal Analysis

Open AccessDOI ↗PDF ↗

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Vulnerable Factors Affecting Urinary N-Methylformamide Concentration among Migrant Workers in Manufacturing Industries in Comparison with Native Workers in the Republic of Korea (2012-2019).

et al. (2022)

Cytowania: 1Open AccessDOI ↗PubMed ↗PDF ↗

Spectroscopic and molecular modeling studies on the interactions of N-Methylformamide with superoxide dismutase.

et al. (2014)

Cytowania: 2$ PaywallDOI ↗PubMed ↗

Separation of chelating agents as copper complexes by capillary zone electrophoresis using quaternary ammonium bromides as additives in N-methylformamide.

et al. (2006)

Cytowania: 2$ PaywallDOI ↗PubMed ↗

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Local intermolecular structure, hydrogen bonding and related dynamics in the liquid cis/trans N-methylformamide mixture: A density functional theory based Born-Oppenheimer molecular dynamics study

Ioannis Skarmoutsos, Ricardo L. Mancera, Stefano Mossa et al. (2022) · arXiv (2209.01801v1)

Open AccessDOI ↗PDF ↗

Simultaneous determination of N-hydroxymethyl-N-methylformamide, N-methylformamide and N-acetyl-S-(N-methylcarbamoyl)cystein in urine samples from workers exposed to N,N-dimethylformamide by liquid chromatography-tandem mass spectrometry.

et al. (2005)

Cytowania: 6$ PaywallDOI ↗PubMed ↗

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Solid-liquid equilibria and excess enthalpies in binary mixtures of acetophenone with some aliphatic amides

Ana Cobos, Patryk Sikorski, Juan Antonio González et al. (2024) · arXiv (2409.12768v1)

Cytowania: 5Open AccessDOI ↗PDF ↗

Identification of potential genomic biomarkers of hepatotoxicity caused by reactive metabolites of N-methylformamide: Application of stable isotope labeled compounds in toxicogenomic studies.

et al. (2006)

Cytowania: 10$ PaywallDOI ↗PubMed ↗

A dual-emitting Tb(iii)&Yb(iii)-functionalized coordination polymer: a "turn-on" sensor for N-methylformamide in urine and a "turn-off" sensor for methylglyoxal in serum.

et al. (2019)

Cytowania: 8$ PaywallDOI ↗PubMed ↗

Dane z PubMed (NIH NLM), OpenAlex (CC0), Semantic Scholar (AI2). AI Summary wygenerowane przez Semantic Scholar TLDR. Artykuły z ikoną wymagają płatnego dostępu.

Synoniemen

N-METHYLFORMAMIDE · 123-39-7 · Methylformamide · Formamide, N-methyl- · Monomethylformamide · N-Monomethylformamide · n-methyl-Formamide · NSC 3051 · EK 7011 · Formic acid amide, N-methyl- · X 188 · XPE4G7Y986 · NSC3051 · NSC-3051 · CHEBI:7438

Gegevensbronnen

📊 PubChem CID 31254 — NIH
🔬 NIST WebBook — spektroskopia
🌐 Wikidata
💊 ChEMBL — bioaktywność

Kopen in de winkel

N-Methylformamide →

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