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Musk Pure？

Musk Pure 是一种化学品，CAS 登记号为 1222-05-5。分子式: C18H26O. 摩尔质量: 258.4 g/mol. IUPAC: 4,6,6,7,8,8-hexamethyl-1,3,4,7-tetrahydrocyclopenta[g]isochromene.

Musk Pure 的 CAS 号是多少？

Musk Pure 的 CAS 号为 1222-05-5——化学文摘社 (CAS) 的唯一标识符。

Musk Pure 的分子式是什么？

分子式: C18H26O. 摩尔质量: 258.4 g/mol. logP (XLogP3): 4.8. PSA: 9.2 Å².

Musk Pure 有哪些 GHS 危害？

根据 GHS 分类，Musk Pure 须标注以下危险说明： H400 (对水生生物毒性极大), H410 (对水生生物毒性极大并具有长期持续影响).

在哪里可以购买Musk Pure？

Musk Pure 在我们的商店有售。查看产品：https://epchems.online/products/musk-pure/

Musk Pure 的化学数据来自哪里？

Musk Pure 的化学数据来自权威来源：PubChem (NIH), ChEMBL (EBI)。 PubChem CID: 91497. 符合 CLP 法规（EC 1272/2008），依据 CC-BY 4.0 许可提供。

Musk Pure

Galaxolide

CAS 1222-05-5 · C₁₈H₂₆O · MW 258.4 g/mol

关于 Musk Pure

Musk Pure 是一种化学品，登记号为 CAS 1222-05-5，分子式为 C₁₈H₂₆O，摩尔质量为 258.4 g/mol。

该分子包含 45 个原子，通过 47 个化学键连接。该化合物的完整系统 IUPAC 名称为 4,6,6,7,8,8-hexamethyl-1,3,4,7-tetrahydrocyclopenta[g]isochromene。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，分配系数 logP = 4.8 (正值，亲脂性化合物)，极性表面积 PSA = 9.2 Å²，0 个氢键供体和 1 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	C₁₈H₂₆O
Masa molowa	258.4 g/mol
IUPAC	4,6,6,7,8,8-hexamethyl-1,3,4,7-tetrahydrocyclopenta[g]isochromene
SMILES	`CC1COCC2=CC3=C(C=C12)C(C(C3(C)C)C)(C)C`
InChIKey	`ONKNPOPIGWHAQC-UHFFFAOYSA-N`
logP (XLogP3)	4.8
PSA	9.2 Å²
HBD / HBA	0 / 1
PubChem CID	CID 91497 ↗

GHS 安全

Sygnał: Uwaga

GHS09

H400 — Działa bardzo toksycznie na organizmy wodne

H410 — Działa bardzo toksycznie na organizmy wodne, powodując długotrwałe skutki

科学文献

Literatura naukowa

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

📈 Timeline publikacji (8 artykułów)

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

🔓

Galaxolide and tonalide modulate neuroendocrine activity in marine species from two taxonomic groups.

Ehiguese FO, Rodgers ML, Araújo CVM et al. (2021) · Environmental research

Open AccessDOI ↗PubMed ↗PDF ↗

🔓

Derivation of predicted no effect concentration and ecological risk assessment of polycyclic musks tonalide and galaxolide in sediment.

Li W, Wang L, Wang X et al. (2022) · Ecotoxicology and environmental safety

Open AccessDOI ↗PubMed ↗PDF ↗

Biological responses of alga Euglena gracilis to triclosan and galaxolide and the regulation of humic acid.

Ding T, Wei L, Hou Z et al. (2022) · Chemosphere

$ PaywallDOI ↗PubMed ↗

Galaxolide and Irgacure 369 are novel environmental androgens.

Li M, Wang R, Wang P (2023) · Chemosphere

$ PaywallDOI ↗PubMed ↗

Ball-milled biochar for galaxolide removal: Sorption performance and governing mechanisms.

Zhang Q, Wang J, Lyu H et al. (2019) · The Science of the total environment

$ PaywallDOI ↗PubMed ↗

Individual and combined toxicity of silver nanoparticles and triclosan or galaxolide in the freshwater algae Euglena sp.

Ding T, Wei L, Yue Z et al. (2023) · The Science of the total environment

$ PaywallDOI ↗PubMed ↗

Adverse effect of environmental androgenic compounds Galaxolide and Irgacure 369 on the male reproductive system.

Li M, Wang P (2023) · Reproductive toxicology (Elmsford, N.Y.)

$ PaywallDOI ↗PubMed ↗

Preliminary assessment of galaxolide bioaccessibility in raw and cooked FISH.

Trabalón L, Alves RN, Castro Ó et al. (2018) · Food and chemical toxicology : an international journal published for the British Industrial Biological Research Association

$ PaywallDOI ↗PubMed ↗

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

Galaxolide · 1222-05-5 · Abbalide · Galoxolide · HHCB · Pearlide · Galaxolide White · hexamethylindanopyran · Cyclopenta[g]-2-benzopyran, 1,3,4,6,7,8-hexahydro-4,6,6,7,8,8-hexamethyl- · Hexahydrohexamethyl cyclopentabenzopyran · 1,3,4,6,7,8-Hexahydro-4,6,6,7,8,8-hexamethyl-cyclopenta-gamma-2-benzopyran · 14170060AT · CHEBI:83784 · Hexahydro-4,6,6,7,8,8-hexamethylcyclopenta-gamma-2-benzopyran · 1,3,4,6,7,8-Hexahydro-4,6,6,7,8,8-hexamethylindeno(5,6-c)pyran

数据来源

📊 PubChem CID 91497 — NIH
🔬 NIST WebBook — spektroskopia
🌐 Wikidata
💊 ChEMBL — bioaktywność

在商店购买

Musk Pure →