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.

2-Butanone ist eine chemische Verbindung, registriert unter der CAS-Nummer 78-93-3. Summenformel: C4H8O. Molmasse: 72.11 g/mol. IUPAC: butan-2-one.

Wie lautet die CAS-Nummer von 2-Butanone?

Die CAS-Nummer von 2-Butanone ist 78-93-3 — eine eindeutige Kennung des Chemical Abstracts Service (CAS).

Wie lautet die Summenformel von 2-Butanone?

Summenformel: C4H8O. Molmasse: 72.11 g/mol. logP (XLogP3): 0.3. PSA: 17.1 Å².

Welche GHS-Gefahren hat 2-Butanone?

Gemäß der GHS-Klassifizierung muss 2-Butanone mit den folgenden Gefahrenhinweisen gekennzeichnet werden: H225 (Flüssigkeit und Dampf leicht entzündbar.), H319 (Verursacht schwere Augenreizung.), H336 (Kann Schläfrigkeit und Benommenheit verursachen.), EUH066 (Wiederholter Kontakt kann zu spröder oder rissiger Haut führen.).

Wo kann ich 2-Butanone kaufen?

2-Butanone ist in unserem Shop erhältlich. Produkt ansehen: https://epchems.online/products/2-butanone/

Woher stammen die chemischen Daten für 2-Butanone?

Die chemischen Daten für 2-Butanone stammen aus zuverlässigen Quellen: PubChem (NIH), ChEMBL (EBI). PubChem CID: 6569. Konform mit der CLP-Verordnung (EG 1272/2008), verfügbar unter der Lizenz CC-BY 4.0.

2-Butanone

Methyl Ethyl Ketone

CAS 78-93-3 · C₄H₈O · MW 72.11 g/mol

Über 2-Butanone

2-Butanone ist eine chemische Verbindung, registriert unter der Nummer CAS 78-93-3, mit der Summenformel C₄H₈O, und einer Molmasse von 72.11 g/mol.

Das Molekül enthält 13 Atome, verbunden durch 12 chemische Bindungen. Der vollständige systematische IUPAC-Name dieser Verbindung lautet butan-2-one. Das interaktive 3D-Modell oben zeigt die räumliche Anordnung der Atome — Sie können es mit der Maus drehen, mit dem Scrollrad zoomen und zwischen den Darstellungsmodi Skelett / Ball & Stick / Space Fill wechseln.

Hinsichtlich der physikalisch-chemischen Eigenschaften der Verteilungskoeffizient logP = 0.3 (positiver Wert, lipophile Verbindung), polare Oberfläche PSA = 17.1 Å², 0 Donatoren und 1 Wasserstoffbrücken-Akzeptoren. Diese Parameter sind entscheidend für die Beurteilung der Bioverfügbarkeit und der Wechselwirkung mit Biomolekülen.

Die chemischen Daten für diese Verbindung stammen aus PubChem (NIH NLM NCBI), einer der größten chemischen Datenbanken der Welt. Alle Informationen werden automatisch aktualisiert und um GHS-Gefahrenhinweise gemäß der CLP-Verordnung (EG 1272/2008) ergänzt. Das obige Widget darf für Bildungs-, Forschungs- und kommerzielle Zwecke verwendet werden.

Physikalisch-chemische Eigenschaften

Wzór sumaryczny	C₄H₈O
Masa molowa	72.11 g/mol
IUPAC	butan-2-one
SMILES	`CCC(=O)C`
InChIKey	`ZWEHNKRNPOVVGH-UHFFFAOYSA-N`
logP (XLogP3)	0.3
PSA	17.1 Å²
HBD / HBA	0 / 1
PubChem CID	CID 6569 ↗

GHS-Sicherheit

Sygnał: Niebezpieczeństwo

GHS02

GHS07

H225 — Wysoce łatwopalna ciecz i pary

H319 — Działa drażniąco na oczy

H336 — Może wywoływać uczucie senności lub zawroty głowy

EUH066 — Powtarzające się narażenie może powodować wysuszanie lub pękanie skóry

Wissenschaftliche Literatur

Literatura naukowa

20 artykułów · 13 open access · Źródła: PubMed, OpenAlex, Semantic Scholar

📈 Timeline publikacji (20 artykułów)

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

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Zingerone (4-(4-hydroxy-3-methylphenyl) butan-2-one) protects against alloxan-induced diabetes via alleviation of oxidative stress and inflammation: Probable role of NF-kB activation.

et al. (2018)

Cytowania: 42Open AccessDOI ↗PubMed ↗PDF ↗

🔓

4-(Phenylsulfanyl)butan-2-One Suppresses Melanin Synthesis and Melanosome Maturation In Vitro and In Vivo.

et al. (2015)

Cytowania: 24Open AccessDOI ↗PubMed ↗PDF ↗

Neuroprotective effect of 4-(Phenylsulfanyl)butan-2-one on optic nerve crush model in rats.

et al. (2016)

Cytowania: 21$ PaywallDOI ↗PubMed ↗

🔓

Different Modes of Acid-Promoted Cyclooligomerization of 4-(4-Thiosemicarbazido)butan-2-one Hydrazone: 14-Membered versus 28-Membered Polyazamacrocycle Formation.

et al. (2022)

Cytowania: 3Open AccessDOI ↗PubMed ↗PDF ↗

🔓

Suppressive Effects of 4-(Phenylsulfanyl) Butan-2-One on CCL-1 Production via Histone Acetylation in Monocytes.

et al. (2022)

Cytowania: 2Open AccessDOI ↗PubMed ↗PDF ↗

Experimental and theoretical studies of (FT-IR, FT-Raman, UV-Visible and DFT) 4-(6-methoxynaphthalen-2-yl) butan-2-one.

(2015)

Cytowania: 5$ PaywallDOI ↗PubMed ↗

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The synthesis and characterization of a series of cocrystals of an isoniazid derivative with butan-2-one and propan-2-one.

(2023)

Cytowania: 1Open AccessDOI ↗PubMed ↗PDF ↗

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4-(4-Hy-droxy-phen-yl)butan-2-one.

(2011)

Cytowania: 1Open AccessDOI ↗PubMed ↗PDF ↗

Zingerone (4-(4-hydroxy-3-methylphenyl)butan-2-one) ameliorates renal function via controlling oxidative burst and inflammation in experimental diabetic nephropathy.

et al. (2019)

Cytowania: 40$ PaywallDOI ↗PubMed ↗

🔓

The 4-(Phenylsulfanyl) butan-2-one Improves Impaired Fear Memory Retrieval and Reduces Excessive Inflammatory Response in Triple Transgenic Alzheimer's Disease Mice.

et al. (2021)

Cytowania: 10Open AccessDOI ↗PubMed ↗PDF ↗

🔓

4-(Phenylsulfanyl) Butan-2-One Attenuates the Inflammatory Response Induced by Amyloid-β Oligomers in Retinal Pigment Epithelium Cells.

et al. (2020)

Cytowania: 9Open AccessDOI ↗PubMed ↗PDF ↗

🔓

Crystal structure of 3-[(2-acetamido-phen-yl)imino]-butan-2-one.

et al. (2018)

Open AccessDOI ↗PubMed ↗PDF ↗

🔓

Synthesis, Characterization, and Anticancer Activity of Phosphanegold(i) Complexes of 3-Thiosemicarbano-butan-2-one Oxime.

Zarewa SA, Binobaid L, Sulaiman AAA et al. (2023) · Biomedicines

Cytowania: 7Open AccessDOI ↗PubMed ↗PDF ↗

Antioxidant properties of oxime 3-(phenylhydrazono) butan-2-one.

et al. (2008)

Cytowania: 15$ PaywallDOI ↗PubMed ↗

🔓

Physicochemical Properties of 4-(4-Hydroxyphenyl)-butan-2-one ("Raspberry Ketone") Evaluated Using a Computational Chemistry Approach.

(2024)

Cytowania: 2Open AccessDOI ↗PubMed ↗PDF ↗

Adsorption behaviour of a Cd<sup>II</sup>-triazole MOF for butan-2-one in a single-crystal-to-single-crystal (SCSC) fashion: the role of hydrogen bonding and C-H...π interactions.

et al. (2019)

$ PaywallDOI ↗PubMed ↗

Spectroscopic and pH-metric studies of the complexation of 3-[2-(4-methylquinolin-2-yl)hydrazono]butan-2-one oxime compound.

et al. (2010)

Cytowania: 6$ PaywallDOI ↗PubMed ↗

RIFM fragrance ingredient safety assessment, 2-butanone, CAS Registry Number 78-93-3.

et al. (2019)

$ PaywallDOI ↗PubMed ↗

🔓

Mapping the Efficacy and Mode of Action of Ethylzingerone [4-(3-Ethoxy-4-Hydroxyphenyl) Butan-2-One] as an Active Agent against <i>Burkholderia</i> Bacteria.

et al. (2020)

Cytowania: 1Open AccessDOI ↗PubMed ↗PDF ↗

🔓

3,3-Dimethyl-1-[5-(1H-1,2,4-triazol-1-yl-meth-yl)-1,3,4-thia-diazol-2-ylsulfan-yl]butan-2-one.

Wei QL, He FJ, Li F et al. (2008) · Acta crystallographica. Section E, Structure reports online

Open AccessDOI ↗PubMed ↗PDF ↗

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

Synonyme

2-Butanone · METHYL ETHYL KETONE · Butan-2-one · Butanone · 78-93-3 · Ethyl methyl ketone · Methylethyl ketone · Meetco · Methyl acetone · Methylethylketone · 3-Butanone · Ethylmethylketon · Aethylmethylketon · Butanone 2 · Acetone, methyl-

Datenquellen

📊 PubChem CID 6569 — NIH
🔬 NIST WebBook — spektroskopia
🌐 Wikidata
💊 ChEMBL — bioaktywność

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