Sodium dodecylbenzene sulfonate

Description

1. Product Overview

Sodium dodecylbenzene sulfonate (SDBS) is a high-performance anionic surfactant manufactured via continuous sulfonation, yielding a consistently pure, biodegradable intermediate for industrial formulation. Its primary industrial use is as a detergent builder and wetting agent in heavy-duty laundry powders, industrial cleaners, textile processing, and emulsion polymerization. The key value proposition lies in its exceptional detergency, foam stability, and cost-efficiency under hard water conditions. Strategically, SDBS remains indispensable for formulators seeking to balance cleaning power with regulatory compliance and supply chain predictability in mature and emerging markets.

2. Key Specifications & Technical Characteristics

• Chemical composition: Sodium dodecylbenzene sulfonate (linear alkylbenzene sulfonate, LAS)

• Purity (active matter): 90% ± 2% (high-active grade) / 60% ± 2% (standard paste grade)

• Physical form: Light yellow to white powder (90%) or viscous paste (60%)

• Bulk density (powder): 450–550 g/L

• pH (1% solution): 7.0–9.5

• Water content (powder): ≤ 5%

• Biodegradability: > 90% (OECD 301)

• Packaging options: 25 kg multi-ply kraft bags with PE liner; 200 kg net drums (paste); 1,000 kg big bags

• Shelf life: 24 months in original unopened packaging, stored below 40°C in dry conditions

3. Core Industrial Applications

• Heavy-duty laundry powders & detergents: Primary surfactant for removing oily soils and particulate matter; outperforms nonionic alternatives in hard water (up to 300 ppm CaCO₃) at lower cost per wash.

• Industrial & institutional (I&I) cleaners: Formulated into degreasers, floor cleaners, and vehicle wash concentrates; provides rapid wetting and emulsification without leaving sticky residues.

• Textile processing: Used as a leveling agent and scouring assistant; removes spinning oils and waxes more efficiently than fatty alcohol ethoxylates in alkaline baths (pH 9–11).

• Emulsion polymerization (e.g., SBR latex): Acts as a primary emulsifier for styrene-butadiene systems; delivers smaller, more uniform particle size compared to sulfosuccinates, improving latex stability.

• Agrochemical adjuvants: Enhances spreading and penetration of herbicides and wettable powders on leaf surfaces under high-humidity conditions.

4. Competitive Advantages

• Quality consistency: Lot-to-lot active matter variation < 1.5% via ISO 9001:2025-certified continuous process control; each shipment includes CoA with HPLC purity traceability.

• Supply reliability: Dual-sourced raw materials (linear alkylbenzene from Asia-Pacific and Middle East) with 60+ days of safety stock held in regional hubs (Rotterdam, Houston, Shanghai).

• Logistics capability: Dedicated bulk powder tankers for > 10 MT orders; container loading via flow-controlled spout to minimize dust and segregation.

• Price competitiveness: Direct manufacturer pricing at 15–20% below European/US spot benchmarks for equivalent 90% active powder.

• Sustainability: Formulated without nonylphenol ethoxylates (NP-free); fully compliant with EU Detergents Regulation (EC) No 648/2004 and China GB/T 15818 biodegradability standards.

• Technical support: In-house application labs provide free formulation optimization and stability testing for your specific water chemistry or co-surfactant system.

5. Commercial & Supply Information

• Minimum order quantity (MOQ): 20 MT (bulk powder) or 16 MT (paste in drums)

• Loading capacity per 20ft container (dry powder): 20 MT (big bags) / 18 MT (25 kg bags)

• Loading capacity per 20ft container (paste): 18.5 MT (200 kg drums, palletized)

• Incoterms supported: FOB (main loading port: Shanghai, Rotterdam, Houston), CIF, CFR, EXW

• Lead time: 14 days for repeat orders; 25 days for first custom-pack order