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 Tripolyphosphate?

Sodium Tripolyphosphate is een chemische verbinding, geregistreerd onder CAS-nummer 7758-29-4. Brutoformule: Na₅O₁₀P₃. Molaire massa: 367.86 g/mol. IUPAC: pentasodium;[oxido(phosphonatooxy)phosphoryl] phosphate.

Wat is het CAS-nummer van Sodium Tripolyphosphate?

Het CAS-nummer van Sodium Tripolyphosphate is 7758-29-4 — een unieke identificatie van de Chemical Abstracts Service (CAS).

Wat is de brutoformule van Sodium Tripolyphosphate?

Brutoformule: Na₅O₁₀P₃. Molaire massa: 367.86 g/mol. PSA: 185 Å².

Waar kan ik Sodium Tripolyphosphate kopen?

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

Waar komen de chemische gegevens voor Sodium Tripolyphosphate vandaan?

De chemische gegevens voor Sodium Tripolyphosphate zijn afkomstig van gezaghebbende bronnen: PubChem (NIH). PubChem CID: 24455. Conform de CLP-verordening (EG 1272/2008), beschikbaar onder de CC-BY 4.0-licentie.

Sodium Tripolyphosphate

CAS 7758-29-4 · Na₅O₁₀P₃ · MW 367.86 g/mol

Over Sodium Tripolyphosphate

Sodium Tripolyphosphate is een chemische verbinding, geregistreerd onder nummer CAS 7758-29-4, met de brutoformule Na₅O₁₀P₃, en een molaire massa van 367.86 g/mol.

Het molecuul bevat 18 atomen verbonden door 12 chemische bindingen. De volledige systematische IUPAC-naam van deze verbinding is pentasodium;[oxido(phosphonatooxy)phosphoryl] phosphate. 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 = 185 Å², 0 donoren en 10 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	Na₅O₁₀P₃
Masa molowa	367.86 g/mol
IUPAC	pentasodium;[oxido(phosphonatooxy)phosphoryl] phosphate
SMILES	`[O-]P(=O)([O-])OP(=O)([O-])OP(=O)([O-])[O-].[Na+].[Na+].[Na+].[Na+].[Na+]`
InChIKey	`HWGNBUXHKFFFIH-UHFFFAOYSA-I`
logP (XLogP3)	—
PSA	185 Å²
HBD / HBA	0 / 10
PubChem CID	CID 24455 ↗

GHS-veiligheid

Sygnał: Uwaga

GHS07

Wetenschappelijke literatuur

Literatura naukowa

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

Methods of test for sodium tripolyphosphate (pentasodium triphosphate) and sodium pyrophosphate (tetrasodium pyrophosphate) for industrial useSeparation by column chromatography and determination of the different phosphate forms

$ PaywallDOI ↗

Methods of test for sodium tripolyphosphate (pentasodium triphosphate) and sodium pyrophosphate (tetrasodium pyrophosphate) for industrial use

$ PaywallDOI ↗

Methods of test for sodium tripolyphosphate (pentasodium triphosphate) and sodium pyrophosphate (tetrasodium pyrophosphate) for industrial use

$ 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

7758-29-4 · Pentasodium triphosphate · STPP · Armofos · Thermphos · Rhodiaphos LV · Thermphos N · Triphosphoric acid, pentasodium salt · Thermphos SPR · Thermphos L 50 · Sodium phosphate (Na5P3O10) · Sodium triphosphate (Na5P3O10) · 9SW4PFD2FZ · S 400 · RefChem:171474

Gegevensbronnen

📊 PubChem CID 24455 — NIH
🔬 NIST WebBook — spektroskopia
🌐 Wikidata
💊 ChEMBL — bioaktywność

Kopen in de winkel

Sodium Tripolyphosphate →

Gerelateerde moleculen

Triethylene glycol monobutyl ether CAS 143-22-6 · C10H22O4 Ethylene glycol diacetate CAS 111-55-7 · C6H10O4 Acetic anhydride CAS 108-24-7 · C4H6O3 Propylene Glycol CAS 57-55-6 · C3H8O2 Diethylene glycol dimethyl ether CAS 110-71-4 · C4H10O2 Salicylic acid CAS 69-72-7 · C7H6O3