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 Sodium persulfate?

Sodium persulfate è un composto chimico registrato con il numero CAS 7775-27-1. Formula bruta: Na₂O₈S₂. Massa molare: 238.11 g/mol. IUPAC: disodium;sulfonatooxy sulfate.

Qual è il numero CAS di Sodium persulfate?

Il numero CAS di Sodium persulfate è 7775-27-1 — un identificativo univoco del Chemical Abstracts Service (CAS).

Qual è la formula bruta di Sodium persulfate?

Formula bruta: Na₂O₈S₂. Massa molare: 238.11 g/mol. PSA: 150 Å².

Quali sono i pericoli GHS di Sodium persulfate?

Secondo la classificazione GHS, Sodium persulfate deve riportare le seguenti indicazioni di pericolo: H272 (Può aggravare un incendio; comburente.), H302 (Nocivo se ingerito.), H315 (Provoca irritazione cutanea.), H317 (Può provocare una reazione allergica cutanea.), H319 (Provoca grave irritazione oculare.).

Dove acquistare Sodium persulfate?

Sodium persulfate è disponibile nel nostro negozio. Vedi il prodotto: https://epchems.online/products/sodium-persulfate/

Da dove provengono i dati chimici di Sodium persulfate?

I dati chimici di Sodium persulfate provengono da fonti autorevoli: PubChem (NIH), ChEMBL (EBI). PubChem CID: 62655. Conformi al Regolamento CLP (CE 1272/2008), disponibili con licenza CC-BY 4.0.

Sodium persulfate

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

Informazioni su Sodium persulfate

Sodium persulfate è un composto chimico registrato con il numero CAS 7775-27-1, con formula bruta Na₂O₈S₂, e massa molare di 238.11 g/mol.

La molecola contiene 12 atomi collegati da 9 legami chimici. Il nome sistematico IUPAC completo di questo composto è disodium;sulfonatooxy sulfate. 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, superficie polare PSA = 150 Å², 0 donatori e 8 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	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 ↗

Sicurezza GHS

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

Letteratura scientifica

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.

Sinonimi

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

Fonti dei dati

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

Acquista nel negozio

Sodium persulfate →

Molecole correlate

Diethylene glycol monobutyl ether CAS 112-34-5 · C8H18O3 Trichloromethane CAS 67-66-3 · CHCl3 Ethylene Carbonate CAS 96-49-1 · C3H4O3 N-Methylformamide CAS 123-39-7 · C2H5NO Cyclohexanol CAS 108-93-0 · C6H12O Dipropylene glycol monobutyl ether CAS 29911-28-2 · C10H22O3