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.

L-Lysine è un composto chimico registrato con il numero CAS 56-87-1. Formula bruta: C6H14N2O2. Massa molare: 146.19 g/mol. IUPAC: (2S)-2,6-diaminohexanoic acid.

Qual è il numero CAS di L-Lysine?

Il numero CAS di L-Lysine è 56-87-1 — un identificativo univoco del Chemical Abstracts Service (CAS).

Qual è la formula bruta di L-Lysine?

Formula bruta: C6H14N2O2. Massa molare: 146.19 g/mol. logP (XLogP3): -3. PSA: 89.3 Å².

Dove acquistare L-Lysine?

L-Lysine è disponibile nel nostro negozio. Vedi il prodotto: https://epchems.online/products/l-lysine/

Da dove provengono i dati chimici di L-Lysine?

I dati chimici di L-Lysine provengono da fonti autorevoli: PubChem (NIH), ChEMBL (EBI). PubChem CID: 5962. Conformi al Regolamento CLP (CE 1272/2008), disponibili con licenza CC-BY 4.0.

L-Lysine

CAS 56-87-1 · C₆H₁₄N₂O₂ · MW 146.19 g/mol

Informazioni su L-Lysine

L-Lysine è un composto chimico registrato con il numero CAS 56-87-1, con formula bruta C₆H₁₄N₂O₂, e massa molare di 146.19 g/mol.

La molecola contiene 24 atomi collegati da 23 legami chimici. Il nome sistematico IUPAC completo di questo composto è (2S)-2,6-diaminohexanoic acid. Il modello 3D interattivo qui sopra permette di visualizzare la disposizione spaziale degli atomi — puoi ruotarlo con il mouse, zoomare con la rotellina e passare tra le modalità di visualizzazione scheletro / Ball & Stick / Space Fill.

Dal punto di vista delle proprietà chimico-fisiche, il coefficiente di ripartizione logP = -3 (valore negativo, composto idrofilo), superficie polare PSA = 89.3 Å², 3 donatori e 4 accettori di legami a idrogeno. Questi parametri sono fondamentali per valutare la biodisponibilità e l'interazione con le biomolecole.

I dati chimici di questo composto provengono da PubChem (NIH NLM NCBI), uno dei più grandi database chimici al mondo. Tutte le informazioni sono aggiornate automaticamente e arricchite con le traduzioni delle indicazioni di pericolo GHS conformi al Regolamento CLP (CE 1272/2008). Il widget qui sopra può essere utilizzato per scopi educativi, di ricerca e commerciali.

Proprietà chimico-fisiche

Wzór sumaryczny	C₆H₁₄N₂O₂
Masa molowa	146.19 g/mol
IUPAC	(2S)-2,6-diaminohexanoic acid
SMILES	`C(CCN)C[C@@H](C(=O)O)N`
InChIKey	`KDXKERNSBIXSRK-YFKPBYRVSA-N`
logP (XLogP3)	-3
PSA	89.3 Å²
HBD / HBA	3 / 4
PubChem CID	CID 5962 ↗

Letteratura scientifica

Literatura naukowa

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

📈 Timeline publikacji (11 artykułów)

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

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Computational and experimental insights into the spectroscopy, electronic states, and molecular docking of (2S)-2,6-diaminohexanoic acid [DAHA].

et al. (2025)

Cytowania: 1Open AccessDOI ↗PubMed ↗PDF ↗

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Heat Capacities of L-Cysteine, L-Serine, L-Threonine, L-Lysine, and L-Methionine

Václav Pokorný, Vojtěch Štejfa, Jakub Havlín et al. (2023) · Molecules

Open AccessDOI ↗PDF ↗

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Identification and Cobamide Coenzyme-dependent Formation of 3,5-Diaminohexanoic Acid, an Intermediate in Lysine Fermentation

E E Dekker, H A Barker (1968) · Journal of Biological Chemistry

Cytowania: 26Open AccessDOI ↗PDF ↗

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CYLD-mediated lysine63 deubiquitination regulates synaptic transmission and autophagy to mitigate age-related sequelae.

Sotiriou A, Konstantinidis G, Tavernarakis N (2026) · Nature communications

Open AccessDOI ↗PubMed ↗PDF ↗

Lysine.

(2006)

Review$ PaywallPubMed ↗

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Lysine restriction attenuates obesity-related anxiety-like behaviors via increasing Oscillibacter ruminantium-mediated tryptophol regulation.

Zhao F, Wang J, Liang W et al. (2025) · Microbiome

Open AccessDOI ↗PubMed ↗PDF ↗

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ETV4 lysine 2-hydroxyisobutyrylation promotes intrahepatic cholangiocarcinoma progression by suppressing ferroptosis through TXNIP downregulation.

Wu J, Ma Y, Wang X et al. (2026) · Cancer letters

Open AccessDOI ↗PubMed ↗PDF ↗

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KDM3A catalyses the oxidation of acetyl-lysine to hydroxyacetyl-lysine on histone H3K9.

Belle R, Bukowski JP, Schiller R et al. (2026) · Nature chemistry

Open AccessDOI ↗PubMed ↗PDF ↗

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Lysine malonylation regulates human sperm motility.

Cheng Y, Tian Y, Chen H et al. (2026) · Communications biology

Open AccessDOI ↗PubMed ↗PDF ↗

Lysine (2,6-Diaminohexanoic Acid, H2l)

O. Yamauchi, A. Odani (2016) · IUPAC Standards Online

$ PaywallDOI ↗

ChemInform Abstract: ABSOLUTE CONFIGURATION OF 3,5‐DIAMINOHEXANOIC ACID FROM THE β‐LYSINE MUTASE REACTION

F. KUNZ, J. RETEY, D. ARIGONI et al. (1978) · Chemischer Informationsdienst

$ PaywallDOI ↗

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

Sinonimi

L-lysine · lysine · 56-87-1 · lysine acid · h-Lys-oh · (S)-Lysine · Aminutrin · alpha-Lysine · (S)-2,6-Diaminohexanoic acid · L-lys · Lisina · Lysinum · (S)-alpha,epsilon-Diaminocaproic acid · LYS (IUPAC abbreviation) · L-2,6-Diaminocaproic acid

Fonti dei dati

📊 PubChem CID 5962 — NIH
🔬 NIST WebBook — spektroskopia
🌐 Wikidata
💊 ChEMBL — bioaktywność

Acquista nel negozio

L-Lysine →

Molecole correlate

Ethanol CAS 100-42-5 · C8H8 Tert-Butanol CAS 75-65-0 · C4H10O Propyl Acetate CAS 109-60-4 · C5H10O2 Propionic Acid CAS 79-09-4 · C3H6O2 Trichloroethylene CAS 127-18-4 · C2Cl4 Formic Acid CAS 64-18-6 · CH2O2