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.

L-Serine is een chemische verbinding, geregistreerd onder CAS-nummer 56-45-1. Brutoformule: C3H7NO3. Molaire massa: 105.09 g/mol. IUPAC: (2S)-2-amino-3-hydroxypropanoic acid.

Wat is het CAS-nummer van L-Serine?

Het CAS-nummer van L-Serine is 56-45-1 — een unieke identificatie van de Chemical Abstracts Service (CAS).

Wat is de brutoformule van L-Serine?

Brutoformule: C3H7NO3. Molaire massa: 105.09 g/mol. logP (XLogP3): -3.1. PSA: 83.6 Å².

Waar kan ik L-Serine kopen?

L-Serine is verkrijgbaar in onze winkel. Bekijk het product: https://epchems.online/products/l-serine/

Waar komen de chemische gegevens voor L-Serine vandaan?

De chemische gegevens voor L-Serine zijn afkomstig van gezaghebbende bronnen: PubChem (NIH), ChEMBL (EBI). PubChem CID: 5951. Conform de CLP-verordening (EG 1272/2008), beschikbaar onder de CC-BY 4.0-licentie.

L-Serine

CAS 56-45-1 · C₃H₇NO₃ · MW 105.09 g/mol

Over L-Serine

L-Serine is een chemische verbinding, geregistreerd onder nummer CAS 56-45-1, met de brutoformule C₃H₇NO₃, en een molaire massa van 105.09 g/mol.

Het molecuul bevat 14 atomen verbonden door 13 chemische bindingen. De volledige systematische IUPAC-naam van deze verbinding is (2S)-2-amino-3-hydroxypropanoic acid. 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, de verdelingscoëfficiënt logP = -3.1 (negatieve waarde, hydrofiele verbinding), polair oppervlak PSA = 83.6 Å², 3 donoren en 4 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	C₃H₇NO₃
Masa molowa	105.09 g/mol
IUPAC	(2S)-2-amino-3-hydroxypropanoic acid
SMILES	`C([C@@H](C(=O)O)N)O`
InChIKey	`MTCFGRXMJLQNBG-REOHCLBHSA-N`
logP (XLogP3)	-3.1
PSA	83.6 Å²
HBD / HBA	3 / 4
PubChem CID	CID 5951 ↗

Wetenschappelijke literatuur

Literatura naukowa

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

📈 Timeline publikacji (11 artykułów)

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

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Heat Capacities of L-Cysteine, L-Serine, L-Threonine, L-Lysine, and L-Methionine

Václav Pokorný, Vojtěch Štejfa, Jakub Havlín et al. (2023) · Molecules

Open AccessDOI ↗PDF ↗

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m(3)C32 tRNA modification controls serine codon-biased mRNA translation, cell cycle, and DNA-damage response.

Cui J, Sendinc E, Liu Q et al. (2024) · Nature communications

Open AccessDOI ↗PubMed ↗PDF ↗

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N6-Methyladenosine modification activates the serine synthesis pathway to mediate therapeutic resistance in liver cancer.

Chan FF, Kwan KK, Seoung DH et al. (2024) · Molecular therapy : the journal of the American Society of Gene Therapy

Open AccessDOI ↗PubMed ↗PDF ↗

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Lactylation-Driven IGF2BP3-Mediated Serine Metabolism Reprogramming and RNA m6A-Modification Promotes Lenvatinib Resistance in HCC.

Lu Y, Zhu J, Zhang Y et al. (2024) · Advanced science (Weinheim, Baden-Wurttemberg, Germany)

Open AccessDOI ↗PubMed ↗PDF ↗

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Dual impacts of serine/glycine-free diet in enhancing antitumor immunity and promoting evasion via PD-L1 lactylation.

Tong H, Jiang Z, Song L et al. (2024) · Cell metabolism

Open AccessDOI ↗PubMed ↗PDF ↗

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Phosphorylation of H3.3 at Serine 31 acts as a switch of nucleosome dynamics for transcription.

Ma J, Zhang J, Xiao X et al. (2025) · Nucleic acids research

Open AccessDOI ↗PubMed ↗PDF ↗

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Respiration defects limit serine synthesis required for lung cancer growth and survival.

Cararo Lopes E, Shi F, Sawant A et al. (2025) · Nature communications

Open AccessDOI ↗PubMed ↗PDF ↗

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Nucleotidyltransferase toxin MenT extends aminoacyl acceptor ends of serine tRNAs to control Mycobacterium tuberculosis growth.

Xu X, Barriot R, Voisin B et al. (2024) · Nature communications

Open AccessDOI ↗PubMed ↗PDF ↗

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Comprehensive analysis of peripheral blood free amino acids in MASLD: the impact of glycine-serine-threonine metabolism.

Mino M, Kakazu E, Sano A et al. (2024) · Amino acids

Open AccessDOI ↗PubMed ↗PDF ↗

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ZNF526 drives tumor growth by enhancing SHMT1-dependent serine metabolism and antioxidant capability in TNBC.

Qin W, Shao L, Li Q et al. (2025) · Molecular cancer

Open AccessDOI ↗PubMed ↗PDF ↗

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USP30 senses serine/glycine levels to regulate serine biosynthesis and colorectal tumorigenesis by deubiquitinating FTO.

Qiao Y, Wang C, Liu H et al. (2026) · Cell death and differentiation

Open AccessDOI ↗PubMed ↗PDF ↗

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

Synoniemen

L-serine · serine · 56-45-1 · (S)-2-Amino-3-hydroxypropanoic acid · (S)-Serine · beta-Hydroxyalanine · L-(-)-Serine · L-ser · (2S)-2-amino-3-hydroxypropanoic acid · Serina · L-Serin · SER (IUPAC abbrev) · Serinum · alpha-Amino-beta-hydroxypropionic acid · Serene

Gegevensbronnen

📊 PubChem CID 5951 — NIH
🔬 NIST WebBook — spektroskopia
🌐 Wikidata
💊 ChEMBL — bioaktywność

Kopen in de winkel

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