Magnesium Diacrylate (MgDA)

What Is Magnesium Diacrylate?

Magnesium Diacrylate (MgDA), also known as magnesium acrylate or magnesium prop-2-enoate, is an inorganic-organic hybrid compound belonging to the class of metal acrylate salts. Its molecular formula is C₆H₆MgO₄, with a molecular weight of 166.415 g/mol. The compound consists of a divalent magnesium cation (Mg²⁺) ionically bonded to two acrylate anions.

Starwin MgDA is the commercial-grade Magnesium Diacrylate supplied by Hangzhou Starwin Tech Co., Ltd. It is manufactured to deliver high purity, consistent quality, and reliable performance across applications in construction, rubber, and polymer chemistry.

密钥标识

Property	价值
CAS Number	5698-98-6
EC Number	227-177-9
MDL Number	MFCD00068285
IUPAC Name	丙烯酸-2镁
Molecular Formula	C₆H₆MgO
分子量	166.415 g/mol
PubChem CID	165336
线性公式	[H₂C=CHCO₂]₂Mg

Product Specifications: Starwin MgDA

The following table summarizes the key technical parameters of Starwin MgDA. Actual values may vary slightly by batch—please refer to the Certificate of Analysis (COA) for each shipment.

Parameter	规格
Grade	100% water-soluble grade, untreated/uncoated
Purity	≥ 98.0%
MEHQ (polymerization inhibitor)	150–250 ppm
湿度	≤ 1.0%
外观	White fine powder
Solubility	Completely soluble in room-temperature water, no insoluble residue
熔点	> 220°C (decomposition)
闪点	61.6°C
水溶性	~964 g/L at 21°C

How to Interpret These Specifications

• Purity (≥ 98.0%)高纯度确保在聚合和交联应用中具有可预测的反应性和一致的性能。
• MEHQ (150–250 ppm): Methoxyhydroquinone is added as a polymerization inhibitor to prevent premature self-polymerization during storage and handling. This controlled range balances storage stability with adequate reactivity when the product is ready for use.
• Moisture (≤ 1.0%): Low moisture content ensures accurate formulation, particularly in moisture-sensitive systems.
• 100% 水溶性，未处理/无涂层该产品在室温水中完全溶解，无不溶残留物。未使用任何包衣剂或表面处理剂，确保与水性配方具有最大反应活性和兼容性。
• 外观（白色细粉）: Uniform particle size and color facilitate accurate weighing and consistent dispersion.

Why Water Solubility Matters

The standout feature of Starwin MgDA is its complete solubility in room-temperature water with no insoluble residue. Magnesium acrylate exhibits a water solubility of approximately 964 g/L at 21°C—one of the highest among metal acrylate salts.

This property is critical for several reasons:

1. 配方灵活性

与水溶性有限的丙烯酸锌（ZDA）不同，丙烯酸镁（MgDA）可配制成全水性溶液。这使其特别适用于低 VOC 和水基体系，包括灌浆组合物、水性涂料及水性聚合工艺。

2. 操作便捷性

As a 100% water-soluble powder, Starwin MgDA dissolves readily on-site without requiring special solvents or elevated temperatures. This simplifies logistics and reduces processing time for end users.

3. Reactive Ionic Crosslinking

Mg²⁺阳离子可在聚合物链间形成离子交联键。与共价交联结合时，这种双重交联机制可制备出力学性能更优的水凝胶和弹性体。

4. No Coating, No Residue

未处理、未包覆的牌号可确保完全反应活性。包覆型牌号（有时用于延缓溶解）会向配方中引入惰性物质，并降低有效成分含量。Starwin MgDA 不含此类添加剂——您指定的即为您所获得的反应物。

Main Applications of Magnesium Diacrylate

1. Chemical Grouting & Waterproofing

This is the most extensively documented application for MgDA. Acrylate grouting (AG) materials are low-viscosity aqueous solutions that form elastic water-plugging gels when injected into cracks and joints. MgDA serves as the principal precursor for these systems.

In the classic grouting formulation, an aqueous solution of MgDA is combined with a polyol monoacrylate (such as hydroxyethyl acrylate or hydroxypropyl acrylate) and a covalent crosslinker like N,N'-methylene-bis-acrylamide. Upon injection, a redox polymerization system initiates rapid gelation at ambient temperature. The resulting gel contains both covalent and ionic crosslinking bonds, delivering effective sealing of sewer conduits, tunnels, and underground structures.

2. Rubber & Elastomer Crosslinking

MgDA functions as a co-crosslinking agent in rubber compounds, particularly in formulations requiring high tensile strength or low hysteresis. It is commonly used alongside or as an alternative to zinc diacrylate (ZDA) and zinc dimethacrylate (ZDMA).

In rubber applications, the acrylate groups of MgDA graft onto polymer chains during vulcanization, while the Mg²⁺ ions form ionic crosslinks. This combination produces elastomers with improved mechanical properties, including enhanced tensile strength and reduced compression set.

3. 聚合物与水凝胶

Magnesium acrylate can be homopolymerized or copolymerized with other monomers such as acrylamide to produce water-soluble polymers and hydrogels. Poly(magnesium acrylate) hydrogels have been investigated as pharmaceutical excipients for controlled drug release and as superabsorbent materials.

4. 气体阻隔膜

含有 MgDA 的水溶性聚合单体组合物已获专利，用于气体阻隔膜应用。金属丙烯酸酯有助于形成致密交联膜，降低气体渗透性。

5. 氯乙烯树脂改性剂

MgDA has been used as a component in compositions for semi-rigid vinyl chloride resin moldings, contributing to improved thermal stability and mechanical properties.

Frequently Asked Questions (FAQ)

What is the difference between Magnesium Diacrylate (MgDA) and Zinc Diacrylate (ZDA)?

Both are divalent metal salts of acrylic acid and function as crosslinking agents. The key differences are:

Property	MgDA	ZDA
水溶性	~964 g/L at 21°C	Very low
外观	白色粉末	白色粉末
主要用途	Aqueous systems, grouting	橡胶交联
响应式	快速、室温反应	快速，热激活

MgDA is preferred in aqueous systems where complete water solubility is required. ZDA is more commonly used in solid rubber compounds. The two are sometimes used in combination to fine-tune crosslink density and physical properties.

Is Magnesium Diacrylate safe to handle?

MgDA is classified under GHS as causing skin irritation (H315), serious eye irritation (H319), and may cause respiratory irritation (H335).

Handling precautions:

• Avoid breathing dust. Use local exhaust ventilation or wear a dust mask (P261).
• 佩戴防护手套、防护服及眼部/面部防护用品（P280）。
• IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses if present and easy to do. Continue rinsing (P305+P351+P338).
• 储存在阴凉干燥处，远离热源和火源。本品对空气和湿气敏感，须严格密封保存。

Why is MEHQ added to Magnesium Diacrylate?

MEHQ (methoxyhydroquinone) is a polymerization inhibitor added at 150–250 ppm to prevent spontaneous polymerization during storage and transport. Without an inhibitor, acrylate monomers can self-polymerize over time, especially when exposed to heat or light. The controlled MEHQ level ensures storage stability while allowing polymerization to proceed normally when the product is used as intended.

MgDA 是否可用于寒冷天气？

是的。基于 MgDA 的注浆体系的优势之一在于，其聚合反应可在环境温度（包括低温）下进行。该氧化还原引发体系无需外部加热即可形成凝胶，使 MgDA 适用于全年野外作业。

“未处理”等级与“涂层”等级的区别是什么？

Coated grades of metal acrylates have a surface treatment (often a fatty acid or polymer coating) applied to delay dissolution or improve flow characteristics. Untreated grades, like Starwin MgDA, dissolve immediately in water and deliver full reactivity. For applications requiring rapid dissolution and maximum crosslinking efficiency, untreated grades are preferred.

Why Choose Hangzhou Starwin Tech Co., Ltd. as Your Magnesium Diacrylate Supplier?

• 品质一致每批 Starwin MgDA 均经过纯度、水分含量、MEHQ 含量及溶解度检测，每批次发货均提供 COA 和 SDS。
• Technical Support我们的团队可提供配方指导、溶出程序及针对具体应用的建议。
• 可靠供应：稳定的生产能力与丰富的出口经验，服务亚洲、欧洲及美洲客户。
• 竞争性定价: Direct from manufacturer, with flexible MOQ options for trial orders.

Contact Us

杭州星威科技有限公司

For technical data sheets (TDS), safety data sheets (SDS), samples, or pricing inquiries regarding Starwin MgDA (Magnesium Diacrylate, CAS 5698-98-6), please contact our team.

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