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.

什么是N-Methylformamide？

N-Methylformamide 是一种化学品，CAS 登记号为 123-39-7。分子式: C2H5NO. 摩尔质量: 59.07 g/mol. IUPAC: N-methylformamide.

N-Methylformamide 的 CAS 号是多少？

N-Methylformamide 的 CAS 号为 123-39-7——化学文摘社 (CAS) 的唯一标识符。

N-Methylformamide 的分子式是什么？

分子式: C2H5NO. 摩尔质量: 59.07 g/mol. logP (XLogP3): -1. PSA: 29.1 Å².

N-Methylformamide 有哪些 GHS 危害？

根据 GHS 分类，N-Methylformamide 须标注以下危险说明： H360D (可能对胎儿造成伤害), H312 (皮肤接触有害).

在哪里可以购买N-Methylformamide？

N-Methylformamide 在我们的商店有售。查看产品：https://epchems.online/products/n-methylformamide/

N-Methylformamide 的化学数据来自哪里？

N-Methylformamide 的化学数据来自权威来源：PubChem (NIH), ChEMBL (EBI)。 PubChem CID: 31254. 符合 CLP 法规（EC 1272/2008），依据 CC-BY 4.0 许可提供。

N-Methylformamide

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

关于 N-Methylformamide

N-Methylformamide 是一种化学品，登记号为 CAS 123-39-7，分子式为 C₂H₅NO，摩尔质量为 59.07 g/mol。

该分子包含 9 个原子，通过 8 个化学键连接。该化合物的完整系统 IUPAC 名称为 N-methylformamide。上方的交互式 3D 模型可查看原子的空间排列——您可以用鼠标旋转、用滚轮缩放，并在骨架 / 球棍 (Ball & Stick) / 空间填充 (Space Fill) 显示模式之间切换。

在理化性质方面，分配系数 logP = -1 (负值，亲水性化合物)，极性表面积 PSA = 29.1 Å²，1 个氢键供体和 1 个氢键受体。这些参数对于评估生物利用度以及与生物分子的相互作用至关重要。

该化合物的化学数据来自 PubChem（NIH NLM NCBI），全球最大的化学数据库之一。所有信息均自动更新，并附有符合 CLP 法规（EC 1272/2008）的 GHS 危险说明翻译。上方的小部件可用于教育、研究和商业用途。

理化性质

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 安全

Sygnał: Niebezpieczeństwo

GHS07

GHS08

? — H360D

H312 — Działa szkodliwie w kontakcie ze skórą

科学文献

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.

同义词

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

数据来源

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

在商店购买

N-Methylformamide →