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 Sodium carbonate?

Sodium carbonate is een chemische verbinding, geregistreerd onder CAS-nummer 497-19-8. Brutoformule: CNa₂O₃. Molaire massa: 105.988 g/mol. IUPAC: disodium;carbonate.

Wat is het CAS-nummer van Sodium carbonate?

Het CAS-nummer van Sodium carbonate is 497-19-8 — een unieke identificatie van de Chemical Abstracts Service (CAS).

Wat is de brutoformule van Sodium carbonate?

Brutoformule: CNa₂O₃. Molaire massa: 105.988 g/mol. PSA: 63.2 Å².

Wat zijn de GHS-gevaren van Sodium carbonate?

Volgens de GHS-classificatie moet Sodium carbonate worden voorzien van de volgende gevarenaanduidingen: H319 (Veroorzaakt ernstige oogirritatie.).

Waar kan ik Sodium carbonate kopen?

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

Waar komen de chemische gegevens voor Sodium carbonate vandaan?

De chemische gegevens voor Sodium carbonate zijn afkomstig van gezaghebbende bronnen: PubChem (NIH), ChEMBL (EBI). PubChem CID: 10340. Conform de CLP-verordening (EG 1272/2008), beschikbaar onder de CC-BY 4.0-licentie.

Sodium carbonate

CAS 497-19-8 · CNa₂O₃ · MW 105.988 g/mol

Over Sodium carbonate

Sodium carbonate is een chemische verbinding, geregistreerd onder nummer CAS 497-19-8, met de brutoformule CNa₂O₃, en een molaire massa van 105.988 g/mol.

Het molecuul bevat 6 atomen verbonden door 3 chemische bindingen. De volledige systematische IUPAC-naam van deze verbinding is disodium;carbonate. 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 = 63.2 Å², 0 donoren en 3 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	CNa₂O₃
Masa molowa	105.988 g/mol
IUPAC	disodium;carbonate
SMILES	`C(=O)([O-])[O-].[Na+].[Na+]`
InChIKey	`CDBYLPFSWZWCQE-UHFFFAOYSA-L`
logP (XLogP3)	—
PSA	63.2 Å²
HBD / HBA	0 / 3
PubChem CID	CID 10340 ↗

GHS-veiligheid

Sygnał: Uwaga

GHS07

H319 — Działa drażniąco na oczy

Wetenschappelijke literatuur

Literatura naukowa

6 artykułów · 2 open access · Źródła: PubMed, OpenAlex, Semantic Scholar

📈 Timeline publikacji (6 artykułów)

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

Viscosity of the eutectic dilithium carbonate-disodium carbonate-dipotassium carbonate melt

Tatsuhiko Ejima, Yuzuru Sato, Tsutomu Yamamura et al. (1987) · Journal of Chemical & Engineering Data

Cytowania: 44$ PaywallDOI ↗

🔓

Scientific Opinion on the safety evaluation of the active substances, sodium carbonate peroxyhydrate coated with sodium carbonate and sodium silicate, bentonite, sodium chloride, sodium carbonate for use in active food contact materials

EFSA Panel on Food Contact Materials, Enzymes, Flavourings and Processing Aids (CEF) (2013) · EFSA Journal

Cytowania: 3Open AccessDOI ↗PDF ↗

Eutectic Composition of a Salt Hydrate Mixture of Sodium Carbonate and Disodium Hydrogen Phosphate

Yasuyuki Watanabe, Izumi Hirasawa (2018) · KAGAKU KOGAKU RONBUNSHU

Cytowania: 6$ PaywallDOI ↗

🔓

A Novel Complex of Chitosan⁻Sodium Carbonate and Its Properties.

Qian J, Wang X, Shu J et al. (2018) · Marine drugs

Open AccessDOI ↗PubMed ↗PDF ↗

Reducing biomass recalcitrance via mild sodium carbonate pretreatment.

Mirmohamadsadeghi S, Chen Z, Wan C (2016) · Bioresource technology

$ PaywallDOI ↗PubMed ↗

Sodium carbonate improves adherence of two-layer alginate for preliminary impressions of complete dentures.

Denneulin T, Denis C, Béhin P et al. (2022) · American journal of dentistry

$ PaywallPubMed ↗

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 CARBONATE · 497-19-8 · Soda Ash · Disodium carbonate · Carbonic acid disodium salt · Sodium carbonate, anhydrous · Calcined soda · Solvay soda · Sodium carbonate anhydrous · Washing soda · Bisodium carbonate · Carbonic acid, disodium salt · Carbonic acid sodium salt · Carbonic acid sodium salt (1:2) · Soda, calcined

Gegevensbronnen

📊 PubChem CID 10340 — NIH
🔬 NIST WebBook — spektroskopia
🌐 Wikidata
💊 ChEMBL — bioaktywność

Kopen in de winkel

Sodium carbonate →

Gerelateerde moleculen

Ethyl Methyl Carbonate CAS 623-53-0 · C4H8O3 L-Cystine CAS 30925-07-6 · C6H14Cl2N2O4S2 Diethyl carbonate CAS 105-58-8 · C5H10O3 Acetic acid CAS 64-19-7 · C₂H₄O₂ Trichloroethylene CAS 127-18-4 · C2Cl4 Sodium citrate CAS 68-04-2 · C₆H₅Na₃O₇