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 glycol？

Triethylene glycol 是一种化学品，CAS 登记号为 112-27-6。分子式: C6H14O4. 摩尔质量: 150.17 g/mol. IUPAC: 2-[2-(2-hydroxyethoxy)ethoxy]ethanol.

Triethylene glycol 的 CAS 号是多少？

Triethylene glycol 的 CAS 号为 112-27-6——化学文摘社 (CAS) 的唯一标识符。

Triethylene glycol 的分子式是什么？

分子式: C6H14O4. 摩尔质量: 150.17 g/mol. logP (XLogP3): -1.6. PSA: 58.9 Å².

Triethylene glycol 有哪些 GHS 危害？

根据 GHS 分类，Triethylene glycol 须标注以下危险说明： H335 (可引起呼吸道刺激).

在哪里可以购买Triethylene glycol？

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

Triethylene glycol 的化学数据来自哪里？

Triethylene glycol 的化学数据来自权威来源：PubChem (NIH), ChEMBL (EBI)。 PubChem CID: 8172. 符合 CLP 法规（EC 1272/2008），依据 CC-BY 4.0 许可提供。

Triethylene glycol

CAS 112-27-6 · C₆H₁₄O₄ · MW 150.17 g/mol

关于 Triethylene glycol

Triethylene glycol 是一种化学品，登记号为 CAS 112-27-6，分子式为 C₆H₁₄O₄，摩尔质量为 150.17 g/mol。

该分子包含 24 个原子，通过 23 个化学键连接。该化合物的完整系统 IUPAC 名称为 2-[2-(2-hydroxyethoxy)ethoxy]ethanol。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 = -1.6 (负值，亲水性化合物)，极性表面积 PSA = 58.9 Å²，2 个氢键供体和 4 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	C₆H₁₄O₄
Masa molowa	150.17 g/mol
IUPAC	2-[2-(2-hydroxyethoxy)ethoxy]ethanol
SMILES	`C(COCCOCCO)O`
InChIKey	`ZIBGPFATKBEMQZ-UHFFFAOYSA-N`
logP (XLogP3)	-1.6
PSA	58.9 Å²
HBD / HBA	2 / 4
PubChem CID	CID 8172 ↗

GHS 安全

Sygnał: Uwaga

GHS07

H335 — Może powodować podrażnienie dróg oddechowych

科学文献

Literatura naukowa

8 artykułów · 3 open access · Źródła: PubMed, OpenAlex, Semantic Scholar

📈 Timeline publikacji (8 artykułów)

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

Isobaric Vapor–Liquid Equilibrium for Four Binary Systems of Ethane-1,2-diol, Butane-1,4-diol, 2-(2-Hydroxyethoxy)ethan-1-ol, and 2-[2-(2-Hydroxyethoxy)ethoxy]ethanol at 10.0 kPa, 20.0 kPa, and 40.0 kPa

Changsheng Yang, Yankai Sun, Zhenli Qin et al. (2014) · Journal of Chemical & Engineering Data

Cytowania: 14$ PaywallDOI ↗

Triethylene glycol HO(CH2CH2O)3H.

Ballantyne B, Snellings WM (2007) · Journal of applied toxicology : JAT

Review$ PaywallDOI ↗PubMed ↗

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Triethylene glycol, an active component of Ashwagandha (Withania somnifera) leaves, is responsible for sleep induction.

Kaushik MK, Kaul SC, Wadhwa R et al. (2017) · PloS one

Open AccessDOI ↗PubMed ↗PDF ↗

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Triethylene Glycol Can Be Predeployed as a Safe Virus-Killing Indoor Air Treatment.

Goldman E, Choueiri TK, Mainelis G et al. (2022) · The Journal of infectious diseases

Open AccessDOI ↗PubMed ↗PDF ↗

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Bioinformatics and Molecular Insights to Anti-Metastasis Activity of Triethylene Glycol Derivatives.

Malik V, Garg S, Afzal S et al. (2020) · International journal of molecular sciences

Open AccessDOI ↗PubMed ↗PDF ↗

Terminal Structure of Triethylene Glycol-Tethered Chains on β-Cyclodextrin-Threaded Polyrotaxanes Dominates Temperature Responsivity and Biointeractions.

Ohashi M, Tamura A, Yui N (2021) · Langmuir : the ACS journal of surfaces and colloids

$ PaywallDOI ↗PubMed ↗

Triethylene glycol poisoning treated with intravenous ethanol infusion.

Vassiliadis J, Graudins A, Dowsett RP (1999) · Journal of toxicology. Clinical toxicology

$ PaywallDOI ↗PubMed ↗

Volumetric, Acoustic and Refractive Behavior of Acid Gas Absorbers: NVinyl-2-pyrrolidinone and Glycol Ethers (2-(2-Ethoxyethoxy)ethanol, 2(2-Butoxyethoxy)ethanol and 2(2-(2-Methoxyethoxy)ethoxy)ethanol)

$ PaywallDOI ↗

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

TRIETHYLENE GLYCOL · 112-27-6 · Triglycol · 2,2'-(Ethane-1,2-diylbis(oxy))diethanol · 2,2'-Ethylenedioxydiethanol · 2-[2-(2-Hydroxyethoxy)ethoxy]ethanol · Trigen · Triethylenglykol · Triethyleneglycol · 1,2-Bis(2-hydroxyethoxy)ethane · 2,2'-Ethylenedioxybis(ethanol) · 3,6-Dioxaoctane-1,8-diol · 2,2'-(Ethylenedioxy)diethanol · 2,2'-Ethylenedioxyethanol · Di-beta-hydroxyethoxyethane

数据来源

📊 PubChem CID 8172 — NIH
🔬 NIST WebBook — spektroskopia
🌐 Wikidata
💊 ChEMBL — bioaktywność

在商店购买

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