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.

Qu'est-ce que Sodium persulfate ?

Sodium persulfate est un composé chimique enregistré sous le numéro CAS 7775-27-1. Formule brute: Na₂O₈S₂. Masse molaire: 238.11 g/mol. IUPAC: disodium;sulfonatooxy sulfate.

Quel est le numéro CAS de Sodium persulfate ?

Le numéro CAS de Sodium persulfate est 7775-27-1 — un identifiant unique du Chemical Abstracts Service (CAS).

Quelle est la formule brute de Sodium persulfate ?

Formule brute: Na₂O₈S₂. Masse molaire: 238.11 g/mol. PSA: 150 Å².

Quels sont les dangers GHS de Sodium persulfate ?

Selon la classification GHS, Sodium persulfate doit porter les mentions de danger suivantes : H272 (Peut aggraver un incendie; comburant.), H302 (Nocif en cas d'ingestion.), H315 (Provoque une irritation cutanée.), H317 (Peut provoquer une allergie cutanée.), H319 (Provoque une sévère irritation des yeux.).

Où acheter Sodium persulfate ?

Sodium persulfate est disponible dans notre boutique. Voir le produit : https://epchems.online/products/sodium-persulfate/

D'où proviennent les données chimiques de Sodium persulfate ?

Les données chimiques de Sodium persulfate proviennent de sources faisant autorité : PubChem (NIH), ChEMBL (EBI). PubChem CID: 62655. Conformes au règlement CLP (CE 1272/2008), disponibles sous licence CC-BY 4.0.

Sodium persulfate

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

À propos de Sodium persulfate

Sodium persulfate est un composé chimique enregistré sous le numéro CAS 7775-27-1, de formule brute Na₂O₈S₂, et de masse molaire 238.11 g/mol.

La molécule contient 12 atomes reliés par 9 liaisons chimiques. Le nom systématique IUPAC complet de ce composé est disodium;sulfonatooxy sulfate. Le modèle 3D interactif ci-dessus permet de visualiser l'arrangement spatial des atomes — vous pouvez le faire pivoter à la souris, zoomer avec la molette et basculer entre les modes de visualisation squelette / Ball & Stick / Space Fill.

Du point de vue des propriétés physico-chimiques, surface polaire PSA = 150 Å², 0 donneurs et 8 accepteurs de liaisons hydrogène. Ces paramètres sont essentiels pour évaluer la biodisponibilité et l'interaction avec les biomolécules.

Les données chimiques de ce composé proviennent de PubChem (NIH NLM NCBI), l'une des plus grandes bases de données chimiques au monde. Toutes les informations sont mises à jour automatiquement et enrichies de traductions des mentions de danger GHS conformes au règlement CLP (CE 1272/2008). Le widget ci-dessus peut être utilisé à des fins éducatives, de recherche et commerciales.

Propriétés physico-chimiques

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 ↗

Sécurité 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

Littérature scientifique

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.

Synonymes

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

Sources des données

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

Acheter en boutique

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Molécules apparentées

Hydrochloric acid CAS 7647-01-0 · ClH Ethanol CAS 100-42-5 · C8H8 L (+)-Arginine CAS 74-79-3 · C6H14N4O2 L (+)-Tartaric acid CAS 87-69-4 · C4H6O6 Ethylene glycol diacetate CAS 111-55-7 · C6H10O4 L-Threonine CAS 72-19-5 · C4H9NO3