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.

Was ist Sodium persulfate?

Sodium persulfate ist eine chemische Verbindung, registriert unter der CAS-Nummer 7775-27-1. Summenformel: Na₂O₈S₂. Molmasse: 238.11 g/mol. IUPAC: disodium;sulfonatooxy sulfate.

Wie lautet die CAS-Nummer von Sodium persulfate?

Die CAS-Nummer von Sodium persulfate ist 7775-27-1 — eine eindeutige Kennung des Chemical Abstracts Service (CAS).

Wie lautet die Summenformel von Sodium persulfate?

Summenformel: Na₂O₈S₂. Molmasse: 238.11 g/mol. PSA: 150 Å².

Welche GHS-Gefahren hat Sodium persulfate?

Gemäß der GHS-Klassifizierung muss Sodium persulfate mit den folgenden Gefahrenhinweisen gekennzeichnet werden: H272 (Kann Brand verstärken; Oxidationsmittel.), H302 (Gesundheitsschädlich bei Verschlucken.), H315 (Verursacht Hautreizungen.), H317 (Kann allergische Hautreaktionen verursachen.), H319 (Verursacht schwere Augenreizung.).

Wo kann ich Sodium persulfate kaufen?

Sodium persulfate ist in unserem Shop erhältlich. Produkt ansehen: https://epchems.online/products/sodium-persulfate/

Woher stammen die chemischen Daten für Sodium persulfate?

Die chemischen Daten für Sodium persulfate stammen aus zuverlässigen Quellen: PubChem (NIH), ChEMBL (EBI). PubChem CID: 62655. Konform mit der CLP-Verordnung (EG 1272/2008), verfügbar unter der Lizenz CC-BY 4.0.

Sodium persulfate

CAS 7775-27-1 · Na₂O₈S₂ · MW 238.11 g/mol

Über Sodium persulfate

Sodium persulfate ist eine chemische Verbindung, registriert unter der Nummer CAS 7775-27-1, mit der Summenformel Na₂O₈S₂, und einer Molmasse von 238.11 g/mol.

Das Molekül enthält 12 Atome, verbunden durch 9 chemische Bindungen. Der vollständige systematische IUPAC-Name dieser Verbindung lautet disodium;sulfonatooxy sulfate. Das interaktive 3D-Modell oben zeigt die räumliche Anordnung der Atome — Sie können es mit der Maus drehen, mit dem Scrollrad zoomen und zwischen den Darstellungsmodi Skelett / Ball & Stick / Space Fill wechseln.

Hinsichtlich der physikalisch-chemischen Eigenschaften polare Oberfläche PSA = 150 Å², 0 Donatoren und 8 Wasserstoffbrücken-Akzeptoren. Diese Parameter sind entscheidend für die Beurteilung der Bioverfügbarkeit und der Wechselwirkung mit Biomolekülen.

Die chemischen Daten für diese Verbindung stammen aus PubChem (NIH NLM NCBI), einer der größten chemischen Datenbanken der Welt. Alle Informationen werden automatisch aktualisiert und um GHS-Gefahrenhinweise gemäß der CLP-Verordnung (EG 1272/2008) ergänzt. Das obige Widget darf für Bildungs-, Forschungs- und kommerzielle Zwecke verwendet werden.

Physikalisch-chemische Eigenschaften

Wzór sumaryczny	Na₂O₈S₂
Masa molowa	238.11 g/mol
IUPAC	disodium;sulfonatooxy sulfate
SMILES	`[O-]S(=O)(=O)OOS(=O)(=O)[O-].[Na+].[Na+]`
InChIKey	`CHQMHPLRPQMAMX-UHFFFAOYSA-L`
logP (XLogP3)	—
PSA	150 Å²
HBD / HBA	0 / 8
PubChem CID	CID 62655 ↗

GHS-Sicherheit

Sygnał: Niebezpieczeństwo

GHS03

GHS07

GHS08

H272 — Może intensyfikować pożar; utleniacz

H302 — Działa szkodliwie po połknięciu

H315 — Działa drażniąco na skórę

H317 — Może powodować reakcję alergiczną skóry

H319 — Działa drażniąco na oczy

H334 — Może powodować objawy alergii lub astmy lub trudności w oddychaniu w następstwie wdychania

H335 — Może powodować podrażnienie dróg oddechowych

H371 — Może spowodować uszkodzenie narządów

H316 — H316

H320 — H320

Wissenschaftliche Literatur

Literatura naukowa

20 artykułów · 0 open access · Źródła: PubMed, OpenAlex, Semantic Scholar

📈 Timeline publikacji (20 artykułów)

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

Selective precipitation of rare earth from non-purified and purified sulfate liquors using sodium sulfate and disodium hydrogen phosphate

Ruberlan G. Silva, Carlos A. Morais, Éder D. Oliveira (2019) · Minerals Engineering

Cytowania: 54$ PaywallDOI ↗

Influence of disodium hydrogen phosphate dodecahydrate on hydrothermal formation of hemihydrate calcium sulfate whiskers

Qing Han, Kangbi Luo, Huping Li et al. (2014) · Particuology

Cytowania: 27$ PaywallDOI ↗

Liquid–liquid equilibria of ionic liquid N-butylpyridinium tetrafluoroborate and disodium hydrogen phosphate/sodium chloride/sodium sulfate/ammonium sulfate aqueous two-phase systems at T = 298.15 K: Experiment and correlation

Yuliang Li, Mengshi Zhang, Jinna Wu et al. (2014) · Fluid Phase Equilibria

Cytowania: 22$ PaywallDOI ↗

Safety evaluation of disodium 5′-inosinate, disodium 5′-guanylate and disodium 5′-ribonucleotide

Kohei Kojima (1974) · Toxicology

Cytowania: 20$ PaywallDOI ↗

Gypsum, disodium pentacalcium sulfate, and anhydrite solubilities in concentrated sodium chloride solutions

D. N. Glew, D. A. Hames (1970) · Canadian Journal of Chemistry

Cytowania: 13$ PaywallDOI ↗

A method for the titrimetric determination of sulfate using the disodium salt of ethylenediamine-tetra-acetic acid

R. Sidjerius (1954) · Analytica Chimica Acta

Cytowania: 10$ PaywallDOI ↗

Calcium Disodium Edathamil in the Treatment of Ferrous Sulfate Poisoning

Herbert Barrie (1962) · JAMA

Cytowania: 5$ PaywallDOI ↗

Modeling of NO mass transfer characteristics absorbed in sodium persulfate solution with a bubble reactor.

Liu J, Li C, Zhang X et al. (2023) · Journal of environmental science and health. Part A, Toxic/hazardous substances & environmental engineering

$ PaywallDOI ↗PubMed ↗

Sulfaquinoxaline oxidation by UV-C activated sodium persulfate: Degradation kinetics and toxicological evaluation.

Boudriche L, Safaei Z, Ramasamy D et al. (2019) · Water environment research : a research publication of the Water Environment Federation

$ PaywallDOI ↗PubMed ↗

Degradation of antibiotic ampicillin on boron-doped diamond anode using the combined electrochemical oxidation - Sodium persulfate process.

Frontistis Z, Mantzavinos D, Meriç S (2018) · Journal of environmental management

$ PaywallDOI ↗PubMed ↗

Overestimate of remediation efficiency due to residual sodium persulfate in PAHs contaminated soil and a solution.

He L, Tong J, Yang Y et al. (2022) · Journal of environmental sciences (China)

$ PaywallDOI ↗PubMed ↗

Kinetics, mechanism, and application of sodium persulfate activated by sodium hydroxide for removing 1,2-dichloroethane from groundwater.

Xie T, Dang Z, Zhang Q et al. (2023) · Environmental research

$ PaywallDOI ↗PubMed ↗

Raman spectroscopic technique towards understanding the degradation of phenol by sodium persulfate in hot compressed water.

Wang J, Zheng W, Zhang Y et al. (2020) · Chemosphere

$ PaywallDOI ↗PubMed ↗

Evaluation of alkaline activated sodium persulfate sustained release rod for the removal of dissolved trichloroethylene.

Liang C, Weng CY (2022) · Journal of hazardous materials

$ PaywallDOI ↗PubMed ↗

Oxidation of nine petroleum hydrocarbon compounds by combined hydrogen peroxide/sodium persulfate catalyzed by siderite.

Li Y, Zhao L, Chen F et al. (2020) · Environmental science and pollution research international

$ PaywallDOI ↗PubMed ↗

The transformation behaviors of heavy metals and dewaterability of sewage sludge during the dual conditioning with Fe(2+)-sodium persulfate oxidation and rice husk.

Xiong Q, Zhou M, Liu M et al. (2018) · Chemosphere

$ PaywallDOI ↗PubMed ↗

Cycloartan-3,23,29-triol 3,29-disodium sulfate

(2013) · Natural Compounds

$ PaywallDOI ↗

Cycloartan-3,29-diol-23-one 3,29-disodium sulfate

(2013) · Natural Compounds

$ PaywallDOI ↗

Disodium Ascorbyl Sulfate

Marina Bährle-Rapp (2007) · Springer Lexikon Kosmetik und Körperpflege

$ PaywallDOI ↗

Cycloart-24-en-3,29-diol-23-one 3,29-disodium sulfate

(2013) · Natural Compounds

$ PaywallDOI ↗

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

Synonyme

Sodium persulfate · 7775-27-1 · Sodium peroxydisulfate · Sodium peroxodisulfate · Peroxydisulfuric acid, disodium salt · Persulfate de sodium · J49FYF16JE · Disodium peroxydisulfate · Peroxydisulfuric acid (((HO)S(O)2)2O2), disodium salt · ORISTAR SP · DISODIUM PEROXODISULFATE · DTXCID009698 · Peroxydisulfuric acid (((HO)S(O)2)2O2), sodium salt (1:2) · SODIUM PERSULFATE (NA2S2O8) · RefChem:184069

Datenquellen

📊 PubChem CID 62655 — NIH
🔬 NIST WebBook — spektroskopia
🌐 Wikidata
💊 ChEMBL — bioaktywność

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