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Linear Alkyl Benzene LAB CAS 67774-74-7 biodegradable detergent surfactant feedstock for LAS LABSA production

Model:	LAB ≥94% (Detergent Grade)
Brand:	Royalchem
Code:	3817.00
CAS NO.:	67774-74-7
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Linear Alkyl Benzene(LAB)

Linear Alkyl Benzene (LAB, CAS 67774-74-7, EC 267-051-0) is the world's leading feedstock for linear alkylbenzene sulfonate (LAS / LABSA), the biodegradable anionic surfactant at the heart of modern laundry and cleaning products. Royalchem supplies high-linearity, detergent-grade LAB as a clear, bright liquid with the general formula C6H5CnH2n+1 (n = 10–13), average molecular weight 238–250, density 0.870–0.885 g/cm³, sulphonatability ≥98.5%, and 2-phenyl isomer content of 10–20%.

Product Description

Linear Alkyl Benzene (LAB)

Detergent-Grade LAB — Feedstock for LAS / LABSA Surfactant

CAS: 67774-74-7 EC: 267-051-0 Sulphonatability: ≥ 98.5%

Linear Alkyl Benzene (LAB, CAS 67774-74-7) is the world's leading feedstock for linear alkylbenzene sulfonate (LAS / LABSA), the biodegradable anionic surfactant at the heart of modern laundry and cleaning products. Its unbranched C₁₀–C₁₃ alkyl chain gives the derived surfactant high detergency together with the rapid aerobic biodegradation that replaced persistent branched alkylbenzene in the 1960s. Royalchem supplies high-linearity, detergent-grade LAB with ≥ 98.5% sulphonatability, available in bulk by ISO tank, flexitank, or drum.

Technical Specifications (COA Data)

Linear Alkylbenzene (LAB)	≥ 94%
Appearance	Clear & bright liquid
Density (20 °C)	0.870 – 0.885 g/cm³
Colour (Hazen)	≤ 10
Sulphonatability	≥ 98.5%
2-Phenyl Isomer	10 – 20%
Average Molecular Weight	238 – 250

*Regulatory: EINECS-listed (EC 267-051-0); REACH-registered; manufactured under ISO 9001. Readily biodegradable under aerobic conditions (OECD 301D > 60% in 28 days) with a low aquatic-toxicity profile — the environmentally preferred alternative to branched alkylbenzene. A combustible liquid (flash point > 100 °C) but not classified as dangerous goods for transport. Low hazard under normal handling — use gloves and eye protection and avoid prolonged skin contact. Refer to the current SDS.

Chemical Structure

C₆H₅CₙH₂ₙ₊₁

n = 10–13 · benzene ring with a single unbranched alkyl chain

(mixture of linear homologues & positional isomers)

Key Properties

• Avg. Molecular Weight: 238–250
• Refractive Index (20 °C): 1.481–1.485
• Bromine Number: ≤ 0.02 g Br/100g
• Moisture: ≤ 0.02%

Main Applications

Surfactant Manufacturing (LAS / LABSA)

The dominant use: sulfonated to linear alkylbenzene sulfonic acid (LABSA) and its salts (LAS) — the primary surfactant in heavy-duty laundry powders and liquids, dishwashing concentrates, and industrial and household cleaners.

Industrial Processing

Used in textile auxiliary chemicals, leather processing agents, paper-industry applications, and metal and electroplating formulations where a stable linear hydrophobe is required.

Readily Biodegradable Hydrophobe

The unbranched chain biodegrades rapidly under aerobic conditions (OECD 301D > 60% in 28 days), making LAB-based surfactants the environmentally preferred, low-aquatic-toxicity choice over branched alkylbenzene.

Logistics & Packaging

Standard Packaging:

Bulk by ISO tank or flexitank, or in 170/200 kg drums, for global supply. Shelf life 24 months in original sealed packaging under proper conditions.

Storage Conditions:

Store in a cool, dry, well-ventilated area, protected from direct sunlight and away from heat, ignition sources, and strong oxidising agents. Compatible with standard carbon-steel and stainless-steel handling equipment; keep dry.

surfactant detergent LAB industrial cleaning Detergent Surfactant LABSA Feedstock