Xylene Solvent Guide for GCC Manufacturers — Mixed Xylene, Isomers, and Industrial Applications
Xylene is one of the most widely consumed industrial solvents in the UAE and Saudi Arabia. Used extensively in alkyd and epoxy coatings, cleaning formulations, adhesives, and as a chemical intermediate, mixed xylene (CAS 1330-20-7) is a staple raw material for paint manufacturers, construction chemical formulators, and industrial processors across the GCC.
This guide covers everything GCC buyers and formulators need to know about xylene — the different grades and isomers, key physical properties, regulatory considerations, applications, and sourcing.
What Is Xylene?
Xylene is an aromatic hydrocarbon with the molecular formula C₈H₁₀. It exists as three isomers — ortho-xylene (o-xylene), meta-xylene (m-xylene), and para-xylene (p-xylene) — plus ethylbenzene, a structural isomer with the same molecular formula. Industrial-grade "mixed xylene" is a blend of all four, typically in ratios of approximately: m-xylene 40-65%, o-xylene 20-25%, p-xylene 10-20%, ethylbenzene 10-20%.
Physical Properties of Mixed Xylene
| Property | Value | Significance |
|---|---|---|
| CAS Number | 1330-20-7 | Customs and regulatory identification |
| HS Code (UAE/GCC) | 2902.44 | Import tariff classification |
| Boiling Range | 136–145°C | Determines evaporation rate in coatings |
| Flash Point | 27–32°C | Class IB flammable liquid — UN 1307, PG II |
| Density @ 20°C | 0.860–0.868 g/cm³ | For formulation weight/volume calculations |
| Kauri-Butanol (KB) Value | 98 | Measures solvency power — high = strong solvent |
| Evaporation Rate (nBAc=1) | 0.66 | Moderate evaporation — good for brush/roller |
| Vapour Pressure @ 20°C | 8–10 mmHg | Low vapour pressure = moderate flash hazard |
| Water Miscibility | Immiscible (173 ppm) | Not suitable for waterborne systems |
| ACGIH TLV-TWA | 100 ppm | Occupational exposure limit for GCC workplaces |
Xylene Applications in the GCC Coatings Industry
Alkyd Resin Coatings
Mixed xylene is the standard solvent for alkyd resin paints across the GCC — from architectural gloss paints to industrial maintenance coatings. Its strong aromatic solvency (KB value 98) makes it highly effective at dissolving and reducing the viscosity of long, medium, and short-oil alkyd resins. Xylene is typically added at 20-40% of total formulation weight in solvent-based alkyd systems.
Epoxy Primer and Intermediate Coats
In two-component solvent-based epoxy systems, xylene is the most commonly used thinner — added at 5-15% to reduce viscosity for airless spray application. Xylene is compatible with most epoxy resin / amine hardener systems and does not react with either component. For tank lining and immersion service applications, confirm with the coating manufacturer that xylene is an approved thinner — some high-performance systems specify only the manufacturer's proprietary thinner. See our Epoxy Resin 128 buyer's guide →
Cleaning and Degreasing
Xylene is used as an industrial degreaser and cleaning solvent for metal fabrication, maintenance, and equipment cleaning operations across the GCC's manufacturing sector. Its strong solvency makes it effective at removing oils, greases, and bituminous deposits. Compared to acetone and MEK, xylene has a slower evaporation rate — allowing more contact time for dissolving stubborn contamination.
Chemical Processing
Mixed xylene is used as a process solvent and reaction medium in chemical synthesis and resin manufacturing. Saudi Arabia is a significant global producer of para-xylene (for PTA and PET resin) through its large aromatics complexes, making the Kingdom an important regional price reference for xylene.
Xylene Safety and VOC Compliance in the GCC
Xylene is classified as a flammable liquid (flash point 27-32°C, GHS Category 3) and is subject to volatile organic compound (VOC) regulations in both the UAE and Saudi Arabia. Key considerations for GCC formulators:
- SASO VOC limits: Saudi Arabia's GSO 1914 standard defines VOC limits for architectural coatings by category. Solvent-based alkyd systems typically need to be formulated to meet 250-380 g/L limits for the relevant category.
- UAE workplace limits: The OSHAD Safety Code of Practice follows ACGIH TLV guidance — xylene TWA of 100 ppm requires adequate ventilation in painting operations.
- Transport classification: Mixed xylene is UN 1307, Class 3, Packing Group II. Requires ADR/IMDG compliance documentation for road and sea transport.
See our full SASO VOC compliance guide →
Packaging and Sourcing in the UAE
Raykem supplies mixed xylene from our Dubai office in 165 kg mild steel drums and ISO tank (minimum approximately 20 metric tonnes). All shipments include COA with GC analysis, SDS (GHS-compliant, English), and packing list. View Raykem's xylene product page → or request a quote.
Frequently Asked Questions
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