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Methyl Propanediol？

Methyl Propanediol 是一种化学品，CAS 登记号为 2163-42-0。分子式: C4H10O2. 摩尔质量: 90.12 g/mol. IUPAC: 2-methylpropane-1,3-diol.

Methyl Propanediol 的 CAS 号是多少？

Methyl Propanediol 的 CAS 号为 2163-42-0——化学文摘社 (CAS) 的唯一标识符。

Methyl Propanediol 的分子式是什么？

分子式: C4H10O2. 摩尔质量: 90.12 g/mol. logP (XLogP3): -0.3. PSA: 40.5 Å².

在哪里可以购买Methyl Propanediol？

Methyl Propanediol 在我们的商店有售。查看产品：https://epchems.online/products/methyl-propanediol/

Methyl Propanediol 的化学数据来自哪里？

Methyl Propanediol 的化学数据来自权威来源：PubChem (NIH), ChEMBL (EBI)。 PubChem CID: 75103. 符合 CLP 法规（EC 1272/2008），依据 CC-BY 4.0 许可提供。

Methyl Propanediol

Methylpropanediol

CAS 2163-42-0 · C₄H₁₀O₂ · MW 90.12 g/mol

关于 Methyl Propanediol

Methyl Propanediol 是一种化学品，登记号为 CAS 2163-42-0，分子式为 C₄H₁₀O₂，摩尔质量为 90.12 g/mol。

该分子包含 16 个原子，通过 15 个化学键连接。该化合物的完整系统 IUPAC 名称为 2-methylpropane-1,3-diol。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 (负值，亲水性化合物)，极性表面积 PSA = 40.5 Å²，2 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	C₄H₁₀O₂
Masa molowa	90.12 g/mol
IUPAC	2-methylpropane-1,3-diol
SMILES	`CC(CO)CO`
InChIKey	`QWGRWMMWNDWRQN-UHFFFAOYSA-N`
logP (XLogP3)	-0.3
PSA	40.5 Å²
HBD / HBA	2 / 2
PubChem CID	CID 75103 ↗

科学文献

Literatura naukowa

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

📈 Timeline publikacji (9 artykułów)

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

Synthesis, structural, spectroscopic, anti-cancer and molecular docking studies on novel 2-[(Anthracene-9-ylmethylene)amino]-2-methylpropane-1,3-diol using XRD, FTIR, NMR, UV–Vis spectra and DFT

P. Pavitha, J. Prashanth, G. Ramu et al. (2017) · Journal of Molecular Structure

Cytowania: 25$ PaywallDOI ↗

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2-[(5-Chloro-2-oxidobenzylidene)azaniumyl]-2-methylpropane-1,3-diol

Dong-Yue Wang, Min Liu, Jing-Jun Ma (2012) · Acta Crystallographica Section E

Open AccessDOI ↗PDF ↗

Synthesis and spectral characterization of 2-((2-hydroxybenzylidene)amino)-2-methylpropane-1,3-diol derived complexes: Molecular docking and antimicrobial studies

Istikhar A. Ansari, Farasha Sama, Mukul Raizada et al. (2017) · Journal of Molecular Structure

Cytowania: 12$ PaywallDOI ↗

Viscosities of Binary and Ternary Aqueous Solutions of 2-Amino-2-methylpropan-1-ol, 2-Amino-2-methylpropane-1,3-diol, and 2-Amino-2-methylpropan-1-ol Hydrochloride

Francisco Chenlo, Ramón Moreira, Gerardo Pereira et al. (2002) · Collection of Czechoslovak Chemical Communications

Cytowania: 2$ PaywallDOI ↗

Lipase-catalyzed alcoholysis of diol dibenzoates: selective enzymatic access to the 2-benzoyl ester of 1,2-propanediol and preparation of the enantiomerically pure (R)-1-O-benzoyl-2-methylpropane-1,3-diol

Enzo Santaniello, Silvana Casati, Pierangela Ciuffreda et al. (2005) · Tetrahedron: Asymmetry

Cytowania: 17$ PaywallDOI ↗

Asymmetrization of 2-methylpropane-1,3-diol by Mucor miehei lipase-catalyzed benzoylation in organic solvent

Enzo Santaniello, Silvana Casati, Pierangela Ciuffreda et al. (2004) · Tetrahedron: Asymmetry

Cytowania: 11$ PaywallDOI ↗

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The crystal structure of (E)-2-((2-hydroxy-4-ethoxybenzylidene)amino)-2-methylpropane-1,3-diol monohydrate, C13H21NO5

Yang Liguo, Zhang Zhen, Niu Yongsheng et al. (2020) · Zeitschrift für Kristallographie - New Crystal Structures

Open AccessDOI ↗PDF ↗

Viscosity of the mixture (1) water; (2) 2-amino-2-methylpropane-1,3-diol

Ch. Wohlfarth (2008) · Landolt-Börnstein - Group IV Physical Chemistry

$ PaywallDOI ↗

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Crystal structure of bis(bis{μ3-3-methyl-3-[(4-nitro-2-oxidobenzylidene)amino]propane-1,3-diolato}tris[chlorido(dimethyl sulfoxide)iron(III)]) dimethyl sulfoxide heptasolvate dihydrate

Eduard Chygorin, Yuri Smal, Irina V. Omelchenko (2016) · Acta Crystallographica Section E: Crystallographic Communications

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

2-Methyl-1,3-propanediol · 2163-42-0 · methylpropanediol · 1,3-Propanediol, 2-methyl- · N8F53B3R4R · .BETA.-HYDROXYISOBUTANOL · HSDB 7267 · MP Diol · RefChem:818687 · 1,3Propanediol, 2methyl · BETA-HYDROXYISOBUTANOL · 1,3-propanediol, 2-methyl · METHYLPROPANEDIOL [INCI] · LESONEL FORMING FEMININE WASH · 1,3-PROPANEDIOL, 2-METHYL-[HSDB]

数据来源

📊 PubChem CID 75103 — NIH
🔬 NIST WebBook — spektroskopia
🌐 Wikidata
💊 ChEMBL — bioaktywność

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