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Dipropylene glycol monomethyl ether？

Dipropylene glycol monomethyl ether 是一种化学品，CAS 登记号为 34590-94-8。分子式: C7H16O3. 摩尔质量: 148.20 g/mol. IUPAC: 1-(1-methoxypropan-2-yloxy)propan-2-ol.

Dipropylene glycol monomethyl ether 的 CAS 号是多少？

Dipropylene glycol monomethyl ether 的 CAS 号为 34590-94-8——化学文摘社 (CAS) 的唯一标识符。

Dipropylene glycol monomethyl ether 的分子式是什么？

分子式: C7H16O3. 摩尔质量: 148.20 g/mol. logP (XLogP3): -0.1. PSA: 38.7 Å².

Dipropylene glycol monomethyl ether 有哪些 GHS 危害？

根据 GHS 分类，Dipropylene glycol monomethyl ether 须标注以下危险说明： H320 (造成眼刺激), H335 (可引起呼吸道刺激), H336 (可引起昏睡或眩晕), H227 (可燃液体).

在哪里可以购买Dipropylene glycol monomethyl ether？

Dipropylene glycol monomethyl ether 在我们的商店有售。查看产品：https://epchems.online/products/dipropylene-glycol-monomethyl-ether/

Dipropylene glycol monomethyl ether 的化学数据来自哪里？

Dipropylene glycol monomethyl ether 的化学数据来自权威来源：PubChem (NIH)。 PubChem CID: 25484. 符合 CLP 法规（EC 1272/2008），依据 CC-BY 4.0 许可提供。

Dipropylene glycol monomethyl ether

CAS 34590-94-8 · C₇H₁₆O₃ · MW 148.20 g/mol

关于 Dipropylene glycol monomethyl ether

Dipropylene glycol monomethyl ether 是一种化学品，登记号为 CAS 34590-94-8，分子式为 C₇H₁₆O₃，摩尔质量为 148.20 g/mol。

该分子包含 26 个原子，通过 25 个化学键连接。该化合物的完整系统 IUPAC 名称为 1-(1-methoxypropan-2-yloxy)propan-2-ol。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 = -0.1 (负值，亲水性化合物)，极性表面积 PSA = 38.7 Å²，1 个氢键供体和 3 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	C₇H₁₆O₃
Masa molowa	148.20 g/mol
IUPAC	1-(1-methoxypropan-2-yloxy)propan-2-ol
SMILES	`CC(COC(C)COC)O`
InChIKey	`WGYZMNBUZFHYRX-UHFFFAOYSA-N`
logP (XLogP3)	-0.1
PSA	38.7 Å²
HBD / HBA	1 / 3
PubChem CID	CID 25484 ↗

GHS 安全

Sygnał: Uwaga

GHS07

H320 — H320

H335 — Może powodować podrażnienie dróg oddechowych

H336 — Może wywoływać uczucie senności lub zawroty głowy

H227 — Substancja ciekła palna

科学文献

Literatura naukowa

11 artykułów · 1 open access · Źródła: PubMed, OpenAlex, Semantic Scholar

📈 Timeline publikacji (11 artykułów)

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

🔓

Lactic acidosis with elevated osmolal gap after ingestion of a lighter fluid containing dipropylene glycol monomethyl ether (DPGME), a case report.

Langbroek PM, Dreijer AR, de Lange DW et al. (2022) · Clinical toxicology (Philadelphia, Pa.)

Open AccessDOI ↗PubMed ↗PDF ↗

Programmable gate delayed ion mobility spectrometry-mass spectrometry: a study with low concentrations of dipropylene-glycol-monomethyl-ether in air.

Hill CA, Thomas CL (2005) · The Analyst

$ PaywallDOI ↗PubMed ↗

Dipropylene glycol monomethyl ether: a 13-week inhalation toxicity study in rats and rabbits.

Landry TD, Yano BL (1984) · Fundamental and applied toxicology : official journal of the Society of Toxicology

$ PaywallDOI ↗PubMed ↗

Metabolism and disposition of dipropylene glycol monomethyl ether (DPGME) in male rats.

Miller RR, Hermann EA, Calhoun LL et al. (1985) · Fundamental and applied toxicology : official journal of the Society of Toxicology

$ PaywallDOI ↗PubMed ↗

Percutaneous toxicity of ethylene glycol monomethyl ether and of dipropylene glycol monomethyl ether in the rat.

Fairhurst S, Knight R, Marrs TC et al. (1989) · Toxicology

$ PaywallDOI ↗PubMed ↗

Final report on the safety assessment of PPG-2 methyl ether, PPG-3 methyl ether, and PPG-2 methyl ether acetate.

Robinson V, Bergfeld WF, Belsito DV et al. (2009) · International journal of toxicology

$ PaywallDOI ↗PubMed ↗

Modeling aggregate exposures to glycol ethers from use of commercial floor products.

Koontz M, Price P, Hamilton J et al. (2006) · International journal of toxicology

$ PaywallDOI ↗PubMed ↗

Time-weighted average sampling of airborne propylene glycol ethers by a solid-phase microextraction device.

Shih HC, Tsai SW, Kuo CH (2012) · Journal of occupational and environmental hygiene

$ PaywallDOI ↗PubMed ↗

Application of multidimensional gas chromatography-mass spectrometry to the determination of glycol ethers in air.

Kennedy ER, O'Connor PF, Grote AA (1990) · Journal of chromatography

$ PaywallDOI ↗PubMed ↗

Optimisation of solvent desorption conditions for chemical warfare agent and simulant compounds from Porapak Q using experimental design. I. Methyl salicylate and di(propylene glycol) monomethyl ether.

Muir B, Duffy HB, Moran MC (2004) · Journal of chromatography. A

$ PaywallDOI ↗PubMed ↗

Test Method for Purity of Propylene Glycol Monomethyl Ether, Dipropylene Glycol Monomethyl Ether, and Propylene Glycol Monomethyl Ether Acetate.

$ PaywallDOI ↗PDF ↗

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

PPG-2 methyl ether · Kino-red · RQ1X8FMQ9N · Arcosolv DPM · Glysolv DPM · Propanol, 1(or 2)-(2-methoxymethylethoxy)- · Ucar solvent 2LM · Dowanol-50B · DPGME · HISOLVE DPM · Dipropylene glycol, monomethyl ether · Dowanol 50b · ARCOSOLV · RefChem:589098 · DTXCID601766271

数据来源

📊 PubChem CID 25484 — NIH
🔬 NIST WebBook — spektroskopia
🌐 Wikidata
💊 ChEMBL — bioaktywność

在商店购买

Dipropylene glycol monomethyl ether →