Sodium Lauryl Ether Sulfate (SLES) is the backbone of the cleaning industry. Its chemical formula is approximately $CH_3(CH_2)_{10}CH_2(OCH_2CH_2)_nOSO_3Na$. As a leading supplier, Zhengzhou Clean Chemical Co., Ltd. provides high-purity SLES to global markets. Understanding the difference between N70 and N28 is crucial for your production efficiency.
Figure 1: Comparison of SLES Physical States and Molecular Efficiency.
| Feature | SLES N70 | SLES N28 |
|---|---|---|
| Active Matter (%) | 70 ± 2% | 28 ± 1% |
| Physical State | White or Yellowish Paste | Colorless to Light Yellow Liquid |
| Free Oil (%) | Max 3.5 | Max 1.5 |
| pH Value (1% aq.) | 7.0 – 9.5 | 7.0 – 9.0 |
SLES N70 is the industry standard for exporters. Its high concentration means you are not paying to ship water across oceans. However, users must be aware of the “gel phase.” When diluting N70, the surfactant should be added to water (not vice-versa) using high-speed mixing to prevent thick gel formation.
N28 is often utilized in localized water treatment and small-batch cosmetic manufacturing. Since it is already in liquid form, it integrates instantly into cold-process formulations. This is a primary focus for our , Zhengzhou Clean Chemical Co.,Ltd., which specializes in precision water treatment solutions.
Q: Can I replace N28 with N70 in my formula?
A: Yes, but you must calculate the active matter conversion. 1kg of N70 provides the same cleaning power as 2.5kg of N28, but you will need to add 1.5kg of extra water to your recipe.
Q: What is the shelf life of SLES?
A: Generally 12 months in a cool, dry place. N70 is slightly more stable due to lower water content.
Zhengzhou Clean Chemical Co., Ltd. is a premier manufacturer of detergent chemicals, basic chemicals, and water treatment products. With decades of expertise, we ensure our surfactants meet international quality standards (ISO/SGS).
Our subsidiary, Henan Tokai Chemical Co., Ltd., focuses on the innovation and distribution of high-performance water treatment chemicals, ensuring clean water and efficient industrial processing worldwide.
Contact our technical team for the latest pricing and TDS/MSDS documents.
WhatsApp: 0086 15638803071
Email: info@hntktcca.com
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