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.

What is Sodium Tripolyphosphate?

Sodium Tripolyphosphate is a chemical compound registered under CAS number 7758-29-4. Molecular formula: Na₅O₁₀P₃. Molar mass: 367.86 g/mol. IUPAC: pentasodium;[oxido(phosphonatooxy)phosphoryl] phosphate.

What is the CAS number of Sodium Tripolyphosphate?

The CAS number of Sodium Tripolyphosphate is 7758-29-4 — a unique Chemical Abstracts Service (CAS) identifier.

What is the molecular formula of Sodium Tripolyphosphate?

Molecular formula: Na₅O₁₀P₃. Molar mass: 367.86 g/mol. PSA: 185 Å².

Where can I buy Sodium Tripolyphosphate?

Sodium Tripolyphosphate is available in our shop. View the product: https://epchems.online/products/sodium-tripolyphosphate/

Where does the chemical data for Sodium Tripolyphosphate come from?

Chemical data for Sodium Tripolyphosphate comes from authoritative sources: PubChem (NIH). PubChem CID: 24455. Compliant with the CLP Regulation (EC 1272/2008), available under the CC-BY 4.0 licence.

Sodium Tripolyphosphate

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

About Sodium Tripolyphosphate

Sodium Tripolyphosphate is a chemical compound registered under number CAS 7758-29-4, with the molecular formula Na₅O₁₀P₃, and a molar mass of 367.86 g/mol.

The molecule contains 18 atoms connected by 12 chemical bonds. The full systematic IUPAC name of this compound is pentasodium;[oxido(phosphonatooxy)phosphoryl] phosphate. The interactive 3D model above lets you view the spatial arrangement of the atoms — you can rotate it with the mouse, zoom with the scroll wheel, and switch between skeletal / Ball & Stick / Space Fill visualization modes.

In terms of physicochemical properties, polar surface area PSA = 185 Å², 0 donors and 10 hydrogen bond acceptors. These parameters are key when assessing bioavailability and interaction with biomolecules.

Chemical data for this compound comes from PubChem (NIH NLM NCBI), one of the world's largest chemical databases. All information is updated automatically and enriched with GHS hazard statement translations compliant with the CLP Regulation (EC 1272/2008). The widget above may be used for educational, research and commercial purposes.

Physicochemical properties

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 safety

Sygnał: Uwaga

GHS07

Scientific literature

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

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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.

Synonyms

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

Data sources

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

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