What is the molecular weight of sodium dodecyl benzene sulfonate?
As a supplier of sodium dodecyl benzene sulfonate, I often encounter various inquiries from customers. One of the most frequently asked questions is about the molecular weight of sodium dodecyl benzene sulfonate. In this blog post, I will delve into this topic, providing a comprehensive understanding of its molecular weight and related aspects.
Understanding Sodium Dodecyl Benzene Sulfonate
Sodium dodecyl benzene sulfonate, also known as SDBS, is an anionic surfactant widely used in many industries. It has excellent emulsifying, dispersing, and wetting properties, making it a popular choice in detergents, textile processing, and other applications. The chemical formula of sodium dodecyl benzene sulfonate is $C_{18}H_{29}NaO_{3}S$.
Calculating the Molecular Weight
To determine the molecular weight of sodium dodecyl benzene sulfonate, we need to consider the atomic weights of each element in its chemical formula and the number of atoms of each element.
- Carbon (C): The atomic weight of carbon is approximately 12.01 g/mol. In the formula $C_{18}H_{29}NaO_{3}S$, there are 18 carbon atoms. So, the total mass contributed by carbon is $18\times12.01 = 216.18$ g/mol.
- Hydrogen (H): The atomic weight of hydrogen is about 1.008 g/mol. With 29 hydrogen atoms in the formula, the total mass of hydrogen is $29\times1.008 = 29.232$ g/mol.
- Sodium (Na): The atomic weight of sodium is 22.99 g/mol. There is 1 sodium atom, so its contribution to the molecular weight is 22.99 g/mol.
- Oxygen (O): The atomic weight of oxygen is 16.00 g/mol. Since there are 3 oxygen atoms, the total mass of oxygen is $3\times16.00 = 48.00$ g/mol.
- Sulfur (S): The atomic weight of sulfur is 32.06 g/mol. There is 1 sulfur atom, and its mass is 32.06 g/mol.
To find the molecular weight of sodium dodecyl benzene sulfonate, we sum up the masses of all the elements:
[
\begin{align*}
\text{Molecular weight}&=216.18 + 29.232+22.99+48.00 + 32.06\
&=348.462\text{ g/mol}
\end{align*}
]
So, the molecular weight of sodium dodecyl benzene sulfonate is approximately 348.46 g/mol.
Significance of Molecular Weight
The molecular weight of sodium dodecyl benzene sulfonate plays a crucial role in its physical and chemical properties, as well as its applications.
- Solubility: Generally, the solubility of a compound is related to its molecular weight. A lower molecular - weight compound may have higher solubility in certain solvents. In the case of SDBS, its molecular weight affects its solubility in water and other polar solvents, which is important for its use in aqueous - based formulations such as detergents.
- Surface Activity: The molecular weight influences the surfactant's ability to reduce the surface tension of a liquid. SDBS with an appropriate molecular weight can effectively lower the surface tension, making it useful in emulsification and wetting processes.
- Formulation Design: In industrial applications, the molecular weight is considered when formulating products. For example, in textile processing, the right molecular weight of SDBS can ensure proper dye dispersion and fabric wetting. You can learn more about its applications in textile chemicals on our Sodium Dodecyl Benzene Sulfonate page.
Our Offerings as a Supplier
As a reliable supplier of sodium dodecyl benzene sulfonate, we offer high - quality products with consistent molecular weight and purity. Our manufacturing process is strictly controlled to ensure that the SDBS we provide meets the highest industry standards.
We understand that different industries have different requirements for SDBS. For example, the detergent industry may need a SDBS with a specific molecular weight range to achieve optimal cleaning performance. In the textile industry, the SDBS should have good dispersing and wetting properties for efficient dyeing and finishing processes. We also supply Penetrant BX, which is often used in conjunction with SDBS in textile applications.
Quality Control
Our quality control team conducts rigorous testing on every batch of sodium dodecyl benzene sulfonate. We use advanced analytical techniques such as high - performance liquid chromatography (HPLC) and mass spectrometry to accurately determine the molecular weight and purity of our products. This ensures that our customers receive products that meet their specific needs.
Customization
We also offer customization services. If you have special requirements for the molecular weight or other properties of SDBS, our technical team can work with you to develop a customized solution. Whether you need a SDBS with a higher or lower molecular weight for a particular application, we can adjust our manufacturing process accordingly.
Why Choose Us
- Reliability: We have been in the industry for many years and have built a reputation for reliability. Our customers can trust that they will receive high - quality products on time.
- Technical Support: Our experienced technical team is always ready to provide support and advice. Whether you have questions about the molecular weight, application, or formulation of SDBS, we can offer solutions.
- Competitive Pricing: We offer competitive pricing without compromising on quality. This allows our customers to get the best value for their money.
Contact Us for Purchase
If you are interested in purchasing sodium dodecyl benzene sulfonate or have any questions about its molecular weight, applications, or customization, please feel free to contact us. We are eager to discuss your specific requirements and provide you with the best solutions. Our team is committed to helping you achieve your goals in various industries, from detergents to textiles.
References
- Handbook of Surfactants, Third Edition. Michael Ash and Irene Ash.
- Surfactant Science and Technology, Third Edition. Drew Myers.