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.

什么是柠檬酸三钠？

柠檬酸三钠是一种化学品，CAS 登记号为 68-04-2。分子式: C₆H₅Na₃O₇. 摩尔质量: 258.07 g/mol. IUPAC: trisodium;2-hydroxypropane-1,2,3-tricarboxylate.

柠檬酸三钠的 CAS 号是多少？

柠檬酸三钠的 CAS 号为 68-04-2——化学文摘社 (CAS) 的唯一标识符。

柠檬酸三钠的分子式是什么？

分子式: C₆H₅Na₃O₇. 摩尔质量: 258.07 g/mol. PSA: 141 Å².

在哪里可以购买柠檬酸三钠？

柠檬酸三钠在我们的商店有售。查看产品：https://epchems.online/products/sodium-citrate/

柠檬酸三钠的化学数据来自哪里？

柠檬酸三钠的化学数据来自权威来源：PubChem (NIH), ChEMBL (EBI)。 PubChem CID: 6224. 符合 CLP 法规（EC 1272/2008），依据 CC-BY 4.0 许可提供。

柠檬酸三钠

Trisodium citrate

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

关于柠檬酸三钠

柠檬酸三钠 是一种化学品，登记号为 CAS 68-04-2，分子式为 C₆H₅Na₃O₇，摩尔质量为 258.07 g/mol。

该分子包含 21 个原子，通过 17 个化学键连接。该化合物的完整系统 IUPAC 名称为 trisodium;2-hydroxypropane-1,2,3-tricarboxylate。上方的交互式 3D 模型可查看原子的空间排列——您可以用鼠标旋转、用滚轮缩放，并在骨架 / 球棍 (Ball & Stick) / 空间填充 (Space Fill) 显示模式之间切换。

在理化性质方面，极性表面积 PSA = 141 Å²，1 个氢键供体和 7 个氢键受体。这些参数对于评估生物利用度以及与生物分子的相互作用至关重要。

该化合物的化学数据来自 PubChem（NIH NLM NCBI），全球最大的化学数据库之一。所有信息均自动更新，并附有符合 CLP 法规（EC 1272/2008）的 GHS 危险说明翻译。上方的小部件可用于教育、研究和商业用途。

理化性质

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 安全

Sygnał: Uwaga

GHS07

科学文献

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.

同义词

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

数据来源

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

在商店购买

Sodium citrate →