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.

Wat is Trinatriumcitraat?

Trinatriumcitraat is een chemische verbinding, geregistreerd onder CAS-nummer 68-04-2. Brutoformule: C₆H₅Na₃O₇. Molaire massa: 258.07 g/mol. IUPAC: trisodium;2-hydroxypropane-1,2,3-tricarboxylate.

Wat is het CAS-nummer van Trinatriumcitraat?

Het CAS-nummer van Trinatriumcitraat is 68-04-2 — een unieke identificatie van de Chemical Abstracts Service (CAS).

Wat is de brutoformule van Trinatriumcitraat?

Brutoformule: C₆H₅Na₃O₇. Molaire massa: 258.07 g/mol. PSA: 141 Å².

Waar kan ik Trinatriumcitraat kopen?

Trinatriumcitraat is verkrijgbaar in onze winkel. Bekijk het product: https://epchems.online/products/sodium-citrate/

Waar komen de chemische gegevens voor Trinatriumcitraat vandaan?

De chemische gegevens voor Trinatriumcitraat zijn afkomstig van gezaghebbende bronnen: PubChem (NIH), ChEMBL (EBI). PubChem CID: 6224. Conform de CLP-verordening (EG 1272/2008), beschikbaar onder de CC-BY 4.0-licentie.

Trinatriumcitraat

Trisodium citrate

CAS 68-04-2 · C₆H₅Na₃O₇ · MW 258.07 g/mol

Over Trinatriumcitraat

Trinatriumcitraat is een chemische verbinding, geregistreerd onder nummer CAS 68-04-2, met de brutoformule C₆H₅Na₃O₇, en een molaire massa van 258.07 g/mol.

Het molecuul bevat 21 atomen verbonden door 17 chemische bindingen. De volledige systematische IUPAC-naam van deze verbinding is trisodium;2-hydroxypropane-1,2,3-tricarboxylate. Het interactieve 3D-model hierboven toont de ruimtelijke rangschikking van de atomen — u kunt het met de muis draaien, met het scrollwiel inzoomen en schakelen tussen de weergavemodi skelet / Ball & Stick / Space Fill.

Wat de fysisch-chemische eigenschappen betreft, polair oppervlak PSA = 141 Å², 1 donoren en 7 waterstofbrugacceptoren. Deze parameters zijn cruciaal bij de beoordeling van de biobeschikbaarheid en de interactie met biomoleculen.

De chemische gegevens voor deze verbinding zijn afkomstig van PubChem (NIH NLM NCBI), een van de grootste chemische databanken ter wereld. Alle informatie wordt automatisch bijgewerkt en verrijkt met vertalingen van GHS-gevarenaanduidingen conform de CLP-verordening (EG 1272/2008). De bovenstaande widget mag worden gebruikt voor educatieve, onderzoeks- en commerciële doeleinden.

Fysisch-chemische eigenschappen

Wzór sumaryczny	C₆H₅Na₃O₇
Masa molowa	258.07 g/mol
IUPAC	trisodium;2-hydroxypropane-1,2,3-tricarboxylate
SMILES	`C(C(=O)[O-])C(CC(=O)[O-])(C(=O)[O-])O.[Na+].[Na+].[Na+]`
InChIKey	`HRXKRNGNAMMEHJ-UHFFFAOYSA-K`
logP (XLogP3)	—
PSA	141 Å²
HBD / HBA	1 / 7
PubChem CID	CID 6224 ↗

GHS-veiligheid

Sygnał: Uwaga

GHS07

Wetenschappelijke literatuur

Literatura naukowa

11 artykułów · 5 open access · Źródła: PubMed, OpenAlex, Semantic Scholar

📈 Timeline publikacji (11 artykułów)

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

Experimental and Theoretical Studies of Trisodium‐1,3,5‐Benzene Tricarboxylate as a Low‐Voltage Anode Material for Sodium‐Ion Batteries

Abhinav Tripathi, Yingqian Chen, Harihara Padhy et al. (2019) · Energy Technology

Cytowania: 19$ PaywallDOI ↗

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Zoledronate Trisodium

(2020) · Definitions

Open AccessDOI ↗PDF ↗

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Mangafodipir Trisodium

(2020) · Definitions

Open AccessDOI ↗PDF ↗

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Pentetate Calcium Trisodium

(2020) · Definitions

Open AccessDOI ↗PDF ↗

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Gadofosveset Trisodium

(2020) · Definitions

Open AccessDOI ↗PDF ↗

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Pentetate Zinc Trisodium

(2020) · Definitions

Open AccessDOI ↗PDF ↗

Trisodium Heptaphosphide and Trisodium Undecaphosphide

Wolfgang Hönle, Hans Georg Von Schnering, D. W. Murphy (1995) · Inorganic Syntheses

Cytowania: 6$ PaywallDOI ↗

Trisodium 2-Hydroxypropane-1,2,3-Tricarboxylate Encapsulated Nanocontainer-Based Template-Free Electrochemical Synthesis of Multidimensional Copper/Copper Oxide Nanoparticles

Mona Saini, Nutan Rani, Asifa Mushtaq et al. (2022) · Springer Proceedings in Materials

$ PaywallDOI ↗

Trisodium Pyrophosphate

$ PaywallDOI ↗

Trisodium 8-aminopyrene-1,3,6-trisulfonate

$ PaywallDOI ↗

Specification for Trisodium Phosphate (Discontinued 2001)

$ PaywallDOI ↗

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

Synoniemen

Sodium citrate · 68-04-2 · TRISODIUM CITRATE · Natrocitral · Citrosodine · Citric acid, trisodium salt · Trisodium citrate, anhydrous · sodium citrate, anhydrous · Citnatin · Citrosodina · Citrosodna · Citreme · trisodium-citrate · anhydrous sodium citrate · Anhydrous trisodium citrate

Gegevensbronnen

📊 PubChem CID 6224 — NIH
🔬 NIST WebBook — spektroskopia
🌐 Wikidata
💊 ChEMBL — bioaktywność

Kopen in de winkel

Sodium citrate →

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