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.

Che cos'è Musk Pure?

Musk Pure è un composto chimico registrato con il numero CAS 1222-05-5. Formula bruta: C18H26O. Massa molare: 258.4 g/mol. IUPAC: 4,6,6,7,8,8-hexamethyl-1,3,4,7-tetrahydrocyclopenta[g]isochromene.

Qual è il numero CAS di Musk Pure?

Il numero CAS di Musk Pure è 1222-05-5 — un identificativo univoco del Chemical Abstracts Service (CAS).

Qual è la formula bruta di Musk Pure?

Formula bruta: C18H26O. Massa molare: 258.4 g/mol. logP (XLogP3): 4.8. PSA: 9.2 Å².

Quali sono i pericoli GHS di Musk Pure?

Secondo la classificazione GHS, Musk Pure deve riportare le seguenti indicazioni di pericolo: H400 (Molto tossico per gli organismi acquatici.), H410 (Molto tossico per gli organismi acquatici con effetti di lunga durata.).

Dove acquistare Musk Pure?

Musk Pure è disponibile nel nostro negozio. Vedi il prodotto: https://epchems.online/products/musk-pure/

Da dove provengono i dati chimici di Musk Pure?

I dati chimici di Musk Pure provengono da fonti autorevoli: PubChem (NIH), ChEMBL (EBI). PubChem CID: 91497. Conformi al Regolamento CLP (CE 1272/2008), disponibili con licenza CC-BY 4.0.

Musk Pure

Galaxolide

CAS 1222-05-5 · C₁₈H₂₆O · MW 258.4 g/mol

Informazioni su Musk Pure

Musk Pure è un composto chimico registrato con il numero CAS 1222-05-5, con formula bruta C₁₈H₂₆O, e massa molare di 258.4 g/mol.

La molecola contiene 45 atomi collegati da 47 legami chimici. Il nome sistematico IUPAC completo di questo composto è 4,6,6,7,8,8-hexamethyl-1,3,4,7-tetrahydrocyclopenta[g]isochromene. 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 = 4.8 (valore positivo, composto lipofilo), superficie polare PSA = 9.2 Å², 0 donatori e 1 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	C₁₈H₂₆O
Masa molowa	258.4 g/mol
IUPAC	4,6,6,7,8,8-hexamethyl-1,3,4,7-tetrahydrocyclopenta[g]isochromene
SMILES	`CC1COCC2=CC3=C(C=C12)C(C(C3(C)C)C)(C)C`
InChIKey	`ONKNPOPIGWHAQC-UHFFFAOYSA-N`
logP (XLogP3)	4.8
PSA	9.2 Å²
HBD / HBA	0 / 1
PubChem CID	CID 91497 ↗

Sicurezza GHS

Sygnał: Uwaga

GHS09

H400 — Działa bardzo toksycznie na organizmy wodne

H410 — Działa bardzo toksycznie na organizmy wodne, powodując długotrwałe skutki

Letteratura scientifica

Literatura naukowa

8 artykułów · 2 open access · Źródła: PubMed, OpenAlex, Semantic Scholar

📈 Timeline publikacji (8 artykułów)

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

🔓

Galaxolide and tonalide modulate neuroendocrine activity in marine species from two taxonomic groups.

Ehiguese FO, Rodgers ML, Araújo CVM et al. (2021) · Environmental research

Open AccessDOI ↗PubMed ↗PDF ↗

🔓

Derivation of predicted no effect concentration and ecological risk assessment of polycyclic musks tonalide and galaxolide in sediment.

Li W, Wang L, Wang X et al. (2022) · Ecotoxicology and environmental safety

Open AccessDOI ↗PubMed ↗PDF ↗

Biological responses of alga Euglena gracilis to triclosan and galaxolide and the regulation of humic acid.

Ding T, Wei L, Hou Z et al. (2022) · Chemosphere

$ PaywallDOI ↗PubMed ↗

Galaxolide and Irgacure 369 are novel environmental androgens.

Li M, Wang R, Wang P (2023) · Chemosphere

$ PaywallDOI ↗PubMed ↗

Ball-milled biochar for galaxolide removal: Sorption performance and governing mechanisms.

Zhang Q, Wang J, Lyu H et al. (2019) · The Science of the total environment

$ PaywallDOI ↗PubMed ↗

Individual and combined toxicity of silver nanoparticles and triclosan or galaxolide in the freshwater algae Euglena sp.

Ding T, Wei L, Yue Z et al. (2023) · The Science of the total environment

$ PaywallDOI ↗PubMed ↗

Adverse effect of environmental androgenic compounds Galaxolide and Irgacure 369 on the male reproductive system.

Li M, Wang P (2023) · Reproductive toxicology (Elmsford, N.Y.)

$ PaywallDOI ↗PubMed ↗

Preliminary assessment of galaxolide bioaccessibility in raw and cooked FISH.

Trabalón L, Alves RN, Castro Ó et al. (2018) · Food and chemical toxicology : an international journal published for the British Industrial Biological Research Association

$ PaywallDOI ↗PubMed ↗

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

Sinonimi

Galaxolide · 1222-05-5 · Abbalide · Galoxolide · HHCB · Pearlide · Galaxolide White · hexamethylindanopyran · Cyclopenta[g]-2-benzopyran, 1,3,4,6,7,8-hexahydro-4,6,6,7,8,8-hexamethyl- · Hexahydrohexamethyl cyclopentabenzopyran · 1,3,4,6,7,8-Hexahydro-4,6,6,7,8,8-hexamethyl-cyclopenta-gamma-2-benzopyran · 14170060AT · CHEBI:83784 · Hexahydro-4,6,6,7,8,8-hexamethylcyclopenta-gamma-2-benzopyran · 1,3,4,6,7,8-Hexahydro-4,6,6,7,8,8-hexamethylindeno(5,6-c)pyran

Fonti dei dati

📊 PubChem CID 91497 — NIH
🔬 NIST WebBook — spektroskopia
🌐 Wikidata
💊 ChEMBL — bioaktywność

Acquista nel negozio

Musk Pure →

Molecole correlate

Terephthalic Acid CAS 100-21-0 · C8H6O4 Diethylene glycol monohexyl ether CAS 112-59-4 · C10H22O3 Sodium cyanide CAS 143-33-9 · CNNa L-Leucine CAS 61-90-5 · C6H13NO2 Dodecylbenzenesulphonic Acid CAS 27176-87-0 · C₁₈H₃₀O₃S Propionic Acid CAS 79-09-4 · C3H6O2