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Triethylene Diamine？

Triethylene Diamine 是一种化学品，CAS 登记号为 280-57-9。分子式: C6H12N2. 摩尔质量: 112.17 g/mol. IUPAC: 1,4-diazabicyclo[2.2.2]octane.

Triethylene Diamine 的 CAS 号是多少？

Triethylene Diamine 的 CAS 号为 280-57-9——化学文摘社 (CAS) 的唯一标识符。

Triethylene Diamine 的分子式是什么？

分子式: C6H12N2. 摩尔质量: 112.17 g/mol. logP (XLogP3): -0.2. PSA: 6.5 Å².

Triethylene Diamine 有哪些 GHS 危害？

根据 GHS 分类，Triethylene Diamine 须标注以下危险说明： H228 (易燃固体), H302 (吞咽有害), H315 (造成皮肤刺激), H319 (造成严重眼刺激), H361 (怀疑对生育能力或胎儿造成伤害(说明已知的具体影响)(说明接触途径――如已确证无其他接触途径造成这一危害)).

在哪里可以购买Triethylene Diamine？

Triethylene Diamine 在我们的商店有售。查看产品：https://epchems.online/products/triethylene-diamine/

Triethylene Diamine 的化学数据来自哪里？

Triethylene Diamine 的化学数据来自权威来源：PubChem (NIH), ChEMBL (EBI)。 PubChem CID: 9237. 符合 CLP 法规（EC 1272/2008），依据 CC-BY 4.0 许可提供。

Triethylene Diamine

Dabco

CAS 280-57-9 · C₆H₁₂N₂ · MW 112.17 g/mol

关于 Triethylene Diamine

Triethylene Diamine 是一种化学品，登记号为 CAS 280-57-9，分子式为 C₆H₁₂N₂，摩尔质量为 112.17 g/mol。

该分子包含 20 个原子，通过 21 个化学键连接。该化合物的完整系统 IUPAC 名称为 1,4-diazabicyclo[2.2.2]octane。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 = -0.2 (负值，亲水性化合物)，极性表面积 PSA = 6.5 Å²，0 个氢键供体和 2 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	C₆H₁₂N₂
Masa molowa	112.17 g/mol
IUPAC	1,4-diazabicyclo[2.2.2]octane
SMILES	`C1CN2CCN1CC2`
InChIKey	`IMNIMPAHZVJRPE-UHFFFAOYSA-N`
logP (XLogP3)	-0.2
PSA	6.5 Å²
HBD / HBA	0 / 2
PubChem CID	CID 9237 ↗

GHS 安全

Sygnał: Niebezpieczeństwo

GHS02

GHS07

GHS08

H228 — Substancja stała łatwopalna

H302 — Działa szkodliwie po połknięciu

H315 — Działa drażniąco na skórę

H319 — Działa drażniąco na oczy

H361 — Podejrzewa się, że działa szkodliwie na płodność lub na dziecko w łonie matki

H371 — Może spowodować uszkodzenie narządów

H372 — Powoduje uszkodzenie narządów poprzez długotrwałe lub powtarzane narażenie

科学文献

Literatura naukowa

20 artykułów · 10 open access · Źródła: PubMed, OpenAlex, Semantic Scholar

📈 Timeline publikacji (20 artykułów)

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

Isatin N,N'-Cyclic Azomethine Imine 1,3-Dipole and Abnormal [3 + 2]-Cycloaddition with Maleimide in the Presence of 1,4-Diazabicyclo[2.2.2]octane.

et al. (2017)

Cytowania: 22$ PaywallDOI ↗PubMed ↗

Self-assembling systems based on quaternized derivatives of 1,4-diazabicyclo[2.2.2]octane in nutrient broth as antimicrobial agents and carriers for hydrophobic drugs.

et al. (2015)

Cytowania: 13$ PaywallDOI ↗PubMed ↗

Polycations. 18. The synthesis of polycationic lipid materials based on the diamine 1,4-diazabicyclo[2.2.2]octane.

et al. (2009)

Cytowania: 13$ PaywallDOI ↗PubMed ↗

Synthesis and structure-activity relationship of novel 1,4-diazabicyclo[2.2.2]octane derivatives as potent antimicrobial agents.

et al. (2015)

Cytowania: 9$ PaywallDOI ↗PubMed ↗

Ring-opening reactions of 1,4-diazabicyclo[2.2.2]octane (DABCO) derived quaternary ammonium salts with phenols and related nucleophiles.

(2012)

Cytowania: 8$ PaywallDOI ↗PubMed ↗

Feasibility of quaternary ammonium and 1,4-diazabicyclo[2.2.2]octane-functionalized anion-exchange membranes for biohydrogen production in microbial electrolysis cells.

et al. (2020)

Cytowania: 5$ PaywallDOI ↗PubMed ↗

Synthesis of chiral 2,3-disubstituted 1,4-diazabicyclo[2.2.2]octane derivatives.

(2015)

Cytowania: 3$ PaywallDOI ↗PubMed ↗

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Synthesis, Antifungal Activity, and Biocompatibility of Novel 1,4-Diazabicyclo[2.2.2]Octane (DABCO) Compounds and DABCO-Containing Denture Base Resins.

et al. (2017)

Cytowania: 12Open AccessDOI ↗PubMed ↗PDF ↗

🔓

Third-generation ionic liquids with N-alkylated 1,4-diazabicyclo[2.2.2]octane cations and pelargonate anions.

et al. (2020)

Cytowania: 10Open AccessDOI ↗PubMed ↗PDF ↗

Alkylated 1,4-diazabicyclo[2.2.2]octane derivatives with an ester moiety: From self-organization to transdermal insulin delivery.

et al. (2026)

$ PaywallDOI ↗PubMed ↗

🔓

Cation Charge as a Tool to Change Dimensionality in Organic-Inorganic Hybrids Based on Copper Thiocyanate Templated by 1,4-Diazabicyclo[2.2.2]octane.

(2023)

Open AccessDOI ↗PubMed ↗PDF ↗

🔓

Structural and spectral studies of (1,3,5-triazinane-2,4,6-trione) 1,4-diazabicyclo[2.2.2]octane (TTDO)

et al. (2023)

Open AccessDOI ↗PDF ↗

🔓

Systematic study of the substitution effect on the tetrel bond between 1,4-diazabicyclo[2.2.2]octane and TH3X.

et al. (2019)

Open AccessDOI ↗PubMed ↗PDF ↗

🔓

Multiple Roles of 1,4-Diazabicyclo[2.2.2]octane in the Solvothermal Synthesis of Iodobismuthates.

Cai Y, Chippindale AM, Curry RJ et al. (2021) · Inorganic chemistry

Cytowania: 8Open AccessDOI ↗PubMed ↗PDF ↗

🔓

Sulfonylation of 1,4-Diazabicyclo[2.2.2]octane: Charge-Transfer Complex Triggered C-N Bond Cleavage.

Fu Y, Xu QS, Li QZ et al. (2019) · ChemistryOpen

Cytowania: 8Open AccessDOI ↗PubMed ↗PDF ↗

🔓

Self-Assembling Metallocomplexes of the Amphiphilic 1,4-Diazabicyclo[2.2.2]octane Derivative as a Platform for the Development of Nonplatinum Anticancer Drugs.

et al. (2022)

Cytowania: 7Open AccessDOI ↗PubMed ↗PDF ↗

🔓

N-Alkylated 1,4-Diazabicyclo[2.2.2]octane-Polyethylene Glycol Melt as Deep Eutectic Solvent for the Synthesis of Fisher Indoles and 1H-Tetrazoles.

Ali Ghumro S, Alharthy RD, Al-Rashida M et al. (2017) · ACS omega

Cytowania: 3Open AccessDOI ↗PubMed ↗PDF ↗

Preparation of a 1,4-Diazabicyclo[2.2.2]octane sulfonate betaine zwitterionic stationary phase and comparative evaluation of its separation performance in hydrophilic interaction chromatography.

et al. (2025)

Cytowania: 3$ PaywallDOI ↗PubMed ↗

A new surfactant-copper(ii) complex based on 1,4-diazabicyclo[2.2.2]octane amphiphile. Crystal structure determination, self-assembly and functional activity.

et al. (2018)

Cytowania: 5$ PaywallDOI ↗PubMed ↗

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Synthesis of Azirinylammonium Salts via Alkylation of DABCO with 2-Halo-2H-azirines

Maksim A. Valiarovskii, Alexander V. Vorob’ev, Anastasiya V. Agafonova et al. (2026) · Molbank

Open AccessDOI ↗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

1,4-Diazabicyclo[2.2.2]octane · Triethylenediamine · 280-57-9 · Dabco · 1,4-DIAZABICYCLO(2.2.2)OCTANE · Dabco 33LV · Dabco crystal · 1,4-Ethylenepiperazine · TEDA · Texacat TD 100 · Dabco EG · N,N'-endo-Ethylenepiperazine · 1,4-Diazabicyclo-octane · D 33LV · Thancat TD 33

数据来源

📊 PubChem CID 9237 — NIH
🔬 NIST WebBook — spektroskopia
🌐 Wikidata
💊 ChEMBL — bioaktywność

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