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Thioglycolic acid (MGA) is composed of thiol groups (- SH) attached to the acetic acid backbone, highly soluble in water, and easy to use in water-based formulations. The presence of carboxyl (- COOH) and thiol groups endows MGA with strong reducing properties and excellent reactivity with various functional groups, making it an ideal choice for polymerization reactions. Compared with MGA, mercaptopropionic acid (MPA) has a longer carbon chain between the thiol and carboxyl groups. The solubility in water is slightly lower than MGA, but it is still applicable to aqueous systems. Extended carbon chains can affect spatial structure and interactions with other molecules, potentially impacting reaction rates and product properties. Due to the presence of thiol and carboxyl groups, both compounds exhibit significant reactivity, enabling them to participate in polymer synthesis and modification processes. However, when used as intermediates in the synthesis of high-efficiency water-reducing agents, their unique structural characteristics result in different performance performances.
thioglycollic acid
Industrial application of high-efficiency water-reducing agent synthesis
The main application of MGA and MPA is in the synthesis of polycarboxylate ether (PCE) high-efficiency water reducers, which are widely recognized for their excellent performance in improving the workability and durability of concrete. Here are the contributions of each compound to this process:
Enhanced polymer structure:
MGA: Its shorter carbon chains result in tighter molecular packing and higher reaction site density in the polymer structure. This leads to more effective dispersion of cement particles and improved flowability of concrete mixtures.
MPA: Longer carbon chains provide greater flexibility and can enhance steric hindrance effects, potentially improving stability and anti-flocculation properties.
Controlled molecular weight distribution:
MGA: Helps to form polymers with narrow molecular weight distribution, promoting consistency in performance across batches.
MPA: It can produce polymers with wider molecular weight distribution, providing flexibility for customizing the rheological properties of superplasticizers according to specific application requirements.
Thioglycolic acid and mercaptopropionic acid are important components in the synthesis of high-performance and efficient water-reducing agent mother liquor, promoting innovation in the construction chemical industry. By implementing sustainable practices, advanced technologies, and regulatory compliance, transformative solutions are provided to address the challenges associated with their use. By exploring these methods, manufacturers can achieve efficient, safe, and environmentally responsible production of these key chemicals.
| Parameter | Specification |
| Product Name | Mercaptoacetic Acid (also known as Thioctic Acid) |
| CAS Number | 68-11-1 |
| Chemical Formula | C₂H₄O₂S |
| Molecular Weight | 92.11 g/mol |
| Appearance | Colorless to slightly yellow liquid |
| Odor | Strong sulfur odor |
| Form | Liquid |
| Density (g/cm³, at 25°C) | 1.37 g/cm³ |
| Melting Point (°C) | -10°C |
| Boiling Point (°C) | 146°C |
| pH Value (1% solution) | <2 (strongly acidic) |
| Solubility in Water | Highly soluble |
| Refractive Index (nD, at 20°C) | 1.508 |
| Application | Metal surface treatment, chemical synthesis, pharmaceuticals |
| Packaging | 200L drums, IBC containers, bulk tankers |
| Storage Conditions | Store in a cool, dry place away from incompatible materials; keep tightly closed |
| Shelf Life | Typically stable if stored properly |
| Safety Precautions | Corrosive and irritating to skin, eyes, and respiratory system; use appropriate personal protective equipment (PPE); handle in well-ventilated areas |
Product Specifications for Mercaptoacetic Acid (Thioctic Acid)
| Parameter | Specification |
| Product Name | Mercaptopropionic Acid |
| CAS Number | 141-68-6 |
| Chemical Formula | C₃H₆O₂S |
| Molecular Weight | 106.14 g/mol |
| Appearance | Colorless to light yellow liquid |
| Odor | Distinctive sulfur odor |
| Form | Liquid |
| Density (g/cm³, at 25°C) | Approximately 1.2 g/cm³ |
| Melting Point (°C) | -2°C |
| Boiling Point (°C) | 160°C |
| pH Value (1% solution) | <2 (strongly acidic) |
| Solubility in Water | Highly soluble |
| Refractive Index (nD, at 20°C) | 1.487 (approx.) |
| Application | Metal surface treatment, electroplating, chemical synthesis |
| Packaging | 200L drums, IBC containers, bulk tankers |
| Storage Conditions | Store in a cool, dry place away from incompatible materials; keep tightly closed |
| Shelf Life | Typically stable if stored properly |
| Safety Precautions | Corrosive and irritating to skin, eyes, and respiratory system; use appropriate personal protective equipment (PPE); handle in well-ventilated areas |
Product Specifications for Mercaptopropionic Acid
Supplier
Cabr-Concrete is a supplier under TRUNNANO of Concrete Admixture with over 12 years of experience in nano-building energy conservation and nanotechnology development. It accepts payment via Credit Card, T/T, West Union and Paypal. TRUNNANO will ship the goods to customers overseas through FedEx, DHL, by air, or by sea. If you are looking for Thioglycolic acid (MGA), please feel free to contact us and send an inquiry.sales@cabr-concrete.com
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