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2-Butanone？

2-Butanone 是一种化学品，CAS 登记号为 78-93-3。分子式: C4H8O. 摩尔质量: 72.11 g/mol. IUPAC: butan-2-one.

2-Butanone 的 CAS 号是多少？

2-Butanone 的 CAS 号为 78-93-3——化学文摘社 (CAS) 的唯一标识符。

2-Butanone 的分子式是什么？

分子式: C4H8O. 摩尔质量: 72.11 g/mol. logP (XLogP3): 0.3. PSA: 17.1 Å².

2-Butanone 有哪些 GHS 危害？

根据 GHS 分类，2-Butanone 须标注以下危险说明： H225 (高度易燃液体和蒸气), H319 (造成严重眼刺激), H336 (可引起昏睡或眩晕), EUH066 (反复接触可能引起皮肤干燥或皲裂).

在哪里可以购买2-Butanone？

2-Butanone 在我们的商店有售。查看产品：https://epchems.online/products/2-butanone/

2-Butanone 的化学数据来自哪里？

2-Butanone 的化学数据来自权威来源：PubChem (NIH), ChEMBL (EBI)。 PubChem CID: 6569. 符合 CLP 法规（EC 1272/2008），依据 CC-BY 4.0 许可提供。

2-Butanone

Methyl Ethyl Ketone

CAS 78-93-3 · C₄H₈O · MW 72.11 g/mol

关于 2-Butanone

2-Butanone 是一种化学品，登记号为 CAS 78-93-3，分子式为 C₄H₈O，摩尔质量为 72.11 g/mol。

该分子包含 13 个原子，通过 12 个化学键连接。该化合物的完整系统 IUPAC 名称为 butan-2-one。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 = 0.3 (正值，亲脂性化合物)，极性表面积 PSA = 17.1 Å²，0 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	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 安全

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

科学文献

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 ↗

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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 ↗

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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 ↗

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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 ↗

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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 ↗

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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 ↗

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

et al. (2018)

Open AccessDOI ↗PubMed ↗PDF ↗

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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 ↗

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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 ↗

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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 ↗

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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.

同义词

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-

数据来源

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

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