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 N-Heptane?

N-Heptane è un composto chimico registrato con il numero CAS 142-82-5. Formula bruta: C7H16. Massa molare: 100.20 g/mol. IUPAC: heptane.

Qual è il numero CAS di N-Heptane?

Il numero CAS di N-Heptane è 142-82-5 — un identificativo univoco del Chemical Abstracts Service (CAS).

Qual è la formula bruta di N-Heptane?

Formula bruta: C7H16. Massa molare: 100.20 g/mol. logP (XLogP3): 4.4. PSA: 0 Å².

Quali sono i pericoli GHS di N-Heptane?

Secondo la classificazione GHS, N-Heptane deve riportare le seguenti indicazioni di pericolo: H225 (Liquido e vapori facilmente infiammabili.), H304 (Può essere letale in caso di ingestione e di penetrazione nelle vie respiratorie.), H336 (Può provocare sonnolenza o vertigini.), H315 (Provoca irritazione cutanea.), H400 (Molto tossico per gli organismi acquatici.).

Dove acquistare N-Heptane?

N-Heptane è disponibile nel nostro negozio. Vedi il prodotto: https://epchems.online/products/n-heptane/

Da dove provengono i dati chimici di N-Heptane?

I dati chimici di N-Heptane provengono da fonti autorevoli: PubChem (NIH), ChEMBL (EBI). PubChem CID: 8900. Conformi al Regolamento CLP (CE 1272/2008), disponibili con licenza CC-BY 4.0.

N-Heptane

Heptane

CAS 142-82-5 · C₇H₁₆ · MW 100.20 g/mol

Informazioni su N-Heptane

N-Heptane è un composto chimico registrato con il numero CAS 142-82-5, con formula bruta C₇H₁₆, e massa molare di 100.20 g/mol.

La molecola contiene 23 atomi collegati da 22 legami chimici. Il nome sistematico IUPAC completo di questo composto è heptane. 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 = 4.4 (valore positivo, composto lipofilo), superficie polare PSA = 0 Å², 0 donatori e 0 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	C₇H₁₆
Masa molowa	100.20 g/mol
IUPAC	heptane
SMILES	`CCCCCCC`
InChIKey	`IMNFDUFMRHMDMM-UHFFFAOYSA-N`
logP (XLogP3)	4.4
PSA	0 Å²
HBD / HBA	0 / 0
PubChem CID	CID 8900 ↗

Sicurezza GHS

Sygnał: Niebezpieczeństwo

GHS02

GHS07

GHS08

GHS09

H225 — Wysoce łatwopalna ciecz i pary

H304 — Połknięcie i dostanie się przez drogi oddechowe może grozić śmiercią

H336 — Może wywoływać uczucie senności lub zawroty głowy

H315 — Działa drażniąco na skórę

H400 — Działa bardzo toksycznie na organizmy wodne

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

Letteratura scientifica

Literatura naukowa

20 artykułów · 13 open access · Źródła: PubMed, OpenAlex, Semantic Scholar

📈 Timeline publikacji (20 artykułów)

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

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Selective P450BM3 Hydroxylation of the Spiro[3.3]heptane Core as a Route to Potential Drug Fragment Molecules.

et al. (2025)

Cytowania: 3Open AccessDOI ↗PubMed ↗PDF ↗

Development of Indolo-Bicyclo[3.1.1]Heptane as a Carbazole Isostere Through Radical Indolization of Bicyclo[1.1.0]Butanes.

et al. (2025)

Cytowania: 4$ PaywallDOI ↗PubMed ↗

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3-Oxabicyclo[3.1.1]heptane as an Isostere of meta-Benzene.

Dibchak D, Mykhailiuk PK (2025) · Angewandte Chemie (International ed. in English)

Cytowania: 11Open AccessDOI ↗PubMed ↗PDF ↗

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A Novel Class of "Super-Strained" Spiro Heterocycles: Gateway to 1-Azaspiro[3.3]heptane Derivatives, and Biological Validation.

et al. (2026)

Open AccessDOI ↗PubMed ↗PDF ↗

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Synthesis of 1,3-Disubstituted 3-Azabicyclo[3.2.0]heptane Libraries for Fragment-Based Drug Discovery.

et al. (2026)

Open AccessDOI ↗PubMed ↗PDF ↗

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Understanding the Reactivity of N-Heptane Blended with Ethanol or Ethyl Acetate.

et al. (2025)

Open AccessDOI ↗PubMed ↗PDF ↗

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2,5-Diazabicyclo[2.2.1]heptane in medicinal chemistry: a treasure trove of therapeutic opportunities.

et al. (2026)

Open AccessDOI ↗PubMed ↗PDF ↗

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Computational Access to 1,3,5,6,7-Pentanitro-3,6,7-Triazabicyclo-[3.1.1]-Heptane (UIX): A Powerful Potential Explosive with Zero Oxygen Balance.

(2025)

Open AccessDOI ↗PubMed ↗PDF ↗

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Effect of oxygenated ferrocene derivatives on soot formation and nanoparticle emissions in n-heptane diffusion flames.

et al. (2026)

Open AccessDOI ↗PubMed ↗PDF ↗

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High-Pressure Density Measurements and Modeling of Hydrocarbons: 1-Hexene, 2, 4-Dimethylhexane, 2,2,4-Trimethylpentane, and n-Heptane.

et al. (2026)

Open AccessDOI ↗PubMed ↗PDF ↗

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Atmospheric Pressure Corona Discharge Ionization of n-Heptane (I): Formation of the Molecular Ion M+• and Dehydrogenated Ions [M - 2H]+• and [M - nH]+ (n = 1, 3, 5).

et al. (2026)

Open AccessDOI ↗PubMed ↗PDF ↗

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Thermodynamics of mixtures containing amines. XVII. Excess molar enthalpy and volume measurements for benzylamine + heptane or + 1-alkanol mixtures at 298.15 K. Application of the DISQUAC and ERAS models

Luis Felipe Sanz, Juan Antonio González, Fernando Hevia et al. (2024) · arXiv (2410.00799v1)

Open AccessDOI ↗PDF ↗

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Experimental and Computational Investigation of the Influence of Ethanol on Auto-ignition of n-Heptane in Non-Premixed Flows

Liang Ji, Kalyanasundaram Seshadri, Forman A. Williams (2024) · arXiv (2406.08507v1)

Open AccessPDF ↗

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Microfluidic generation of monodisperse ultra-low interfacial tension oil droplets in water†

Guido Bolognesi, Alex Hargreaves, Andrew D. Ward et al. (2014) · RSC Advances

Cytowania: 28Open AccessDOI ↗PDF ↗

Three-Component Difluoroalkylative Alkynylation of [3.1.1]Propellane Enables Modular Bicyclo[3.1.1]heptane Synthesis.

et al. (2026)

$ PaywallDOI ↗PubMed ↗

Recent Advances in the Synthesis of Bicyclo[4.1.0]Heptane Scaffolds.

(2025)

$ PaywallDOI ↗PubMed ↗

Field Ionization Mass Spectrometric and Quantum Chemical Analysis of Alkyl Fragment Ions Produced by Field Dissociation of n-Heptane, 2-Methyl Hexane, and 2-Methyl Heptane.

(2025)

$ PaywallDOI ↗PubMed ↗

Novel oxabicyclo[2.2.1]heptane-3-one derivatives with NO inhibitory and cytotoxic activities, and xanthone derivatives from the endolichenic fungus Exophiala sp.

et al. (2025)

$ PaywallDOI ↗PubMed ↗

Auto-ignition characteristics and kinetic modeling study of PODE3/n-heptane blends

et al. (2025)

$ Paywall

Diffusion coefficients in hydrocarbon systems: n‐heptane in the gas phase of the ethane–n‐heptane and propane–n‐heptane systems

L. T. Carmichael, B. H. Sage (1956) · AIChE Journal

Cytowania: 3$ 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

HEPTANE · n-Heptane · 142-82-5 · Heptan · Heptyl hydride · Dipropyl methane · Dipropylmethane · Gettysolve-C · Skellysolve C · Heptanen · Eptani · 456148SDMJ · NSC-62784 · DTXCID004127 · CHEBI:43098

Fonti dei dati

📊 PubChem CID 8900 — NIH
🔬 NIST WebBook — spektroskopia
🌐 Wikidata
💊 ChEMBL — bioaktywność

Acquista nel negozio

N-Heptane →

Molecole correlate

L-Aspartic acid CAS 56-84-8 · C4H7NO4 Adipic acid CAS 124-04-9 · C6H10O4 N-Hexane CAS 110-54-3 · C6H14 Succinic Acid CAS 110-15-6 · C4H6O4 Acetamide CAS 60-35-5 · C2H5NO Diethylene glycol dimethyl ether CAS 110-71-4 · C4H10O2