calcium alkyl benzene sulfonate - Shanghai Minglan Chemical Co.,Ltd

Description

Calcium alkyl benzene sulfonate is a type of detergent additive commonly used in lubricating oils and greases. It belongs to the class of alkyl benzene sulfonates, where the alkyl group is typically derived from olefins or other hydrocarbons. The addition of calcium ions to the sulfonate structure results in calcium alkyl benzene sulfonate.

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Here are key points about calcium alkyl benzene sulfonate:

1. **Chemical Structure:**

– The chemical structure of calcium alkyl benzene sulfonate consists of a long hydrocarbon chain (alkyl group) attached to a benzene ring, with a sulfonate group (-SO3-) and calcium ions associated with the benzene ring. The specific alkyl chain length can vary.

2. **Detergent and Dispersant Properties:**

– Calcium alkyl benzene sulfonate serves as both a detergent and a dispersant in lubricating oils. As a detergent, it helps prevent the formation of sludge, varnish, and deposits on engine components. As a dispersant, it aids in suspending and dispersing solid particles, preventing their agglomeration.

3. **Alkalinity Reserve:**

– The sulfonate group in calcium alkyl benzene sulfonate contributes to the Total Base Number (TBN) of the lubricating oil. TBN is a measure of the oil’s ability to neutralize acidic compounds formed during the combustion process in internal combustion engines.

4. **Corrosion Protection:**

– Calcium alkyl benzene sulfonate provides corrosion protection for metal surfaces by forming a protective film. This film helps inhibit the corrosive effects of acidic by-products and contaminants in the lubricating oil.

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5. **Use in Engine Oils:**

– Calcium alkyl benzene sulfonate is commonly used in engine oils, especially in formulations for heavy-duty diesel engines. It plays a crucial role in keeping the engine clean, protecting against wear, and maintaining oil stability.

6. **Compatibility:**

– Calcium alkyl benzene sulfonate is generally compatible with other additives used in lubricating oil formulations. Lubricant manufacturers carefully select and balance additives to ensure compatibility and achieve the desired performance characteristics.

7. **Water Tolerance:**

– Calcium alkyl benzene sulfonate is known for its water tolerance, making it effective in applications where water contamination is a concern. It can help maintain performance even in the presence of small amounts of water.

8. **Biodegradability:**

– Biodegradability is an important consideration for lubricant additives. Calcium alkyl benzene sulfonate is designed to be biodegradable, contributing to environmental considerations.

Calcium alkyl benzene sulfonate, like other detergent additives, is part of a carefully formulated lubricant that meets industry standards and specifications. Lubricant manufacturers consider factors such as operating conditions, equipment compatibility, and regulatory requirements when selecting and blending additives for optimal performance.

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