Mixed Xylene (CAS 1330-20-7) has a closed-cup flash point of approximately 27°C to 32°C (81°F–90°F), which classifies it as a flammable liquid under GHS and international transport regulations. This means mixed xylene can form an ignitable vapor-air mixture near or slightly above typical ambient warehouse temperatures, making correct storage, handling and transport procedures essential for anyone purchasing or using this solvent in industrial paint, coating, adhesive or ink production.
Flash Point by Isomer
Because commercial mixed xylene blends o-xylene, m-xylene and p-xylene (often with trace ethylbenzene), its flash point falls within a narrow range determined by its component isomers:
| Component | Flash Point (Closed Cup, approx.) |
|---|---|
| o-Xylene (CAS 95-47-6) | 30–32°C |
| m-Xylene | 27–28°C |
| p-Xylene | 27–28°C |
| Ethylbenzene | ~15°C (lower than xylene isomers) |
| Commercial Mixed Xylene | ~27–32°C (typical range, varies by isomer ratio and ethylbenzene content) |
GHS Classification and Transport Data
Based on its flash point, mixed xylene is generally classified and shipped as follows (always confirm against the current SDS for your specific batch and destination country regulations):
- GHS Classification: Flammable Liquid (Category 3), Health Hazard, Environmental Hazard (aquatic toxicity)
- Hazard Statements: Highly flammable liquid and vapor; may cause drowsiness or dizziness; may cause skin/eye irritation; toxic to aquatic life with long-lasting effects
- UN Number: UN 1307 (Xylenes)
- DOT/Transport Hazard Class: Class 3, Flammable Liquid
- Packing Group: III
These classifications affect labeling, packaging, and shipping documentation for both domestic transport and international export - GNEE BIO prepares the required export and shipping documentation for every bulk mixed xylene order.
Storage and Handling Best Practices
Because mixed xylene's flash point is close to normal ambient temperature in many climates, proper storage and handling practices reduce fire risk and protect workers:
- Store away from heat, sparks and open flame - Keep drums, IBC totes or ISO tanks in a cool, well-ventilated area away from ignition sources.
- Use grounding and bonding - When transferring mixed xylene between containers, ground and bond equipment to prevent static discharge, a common ignition source for flammable solvents.
- Ensure adequate ventilation - Mixed xylene vapors are heavier than air and can accumulate in low-lying or poorly ventilated areas; use local exhaust ventilation where handling occurs.
- Use appropriate PPE - Chemical-resistant gloves, eye protection, and respiratory protection where vapor exposure limits may be exceeded.
- Keep containers sealed when not in use - Minimizes vapor release and reduces both fire risk and VOC emissions.
- Store away from strong oxidizers - Mixed xylene is incompatible with strong oxidizing agents, which can increase fire and reaction risk.
Why Flash Point Matters When Formulating with Mixed Xylene
Beyond safety compliance, flash point also has practical implications for coating formulators. A lower flash point solvent blend can trigger stricter warehouse storage classifications and insurance requirements, and can influence which transport modes and packaging types are permitted for export. When designing a solvent blend for paints, coatings, adhesives or inks, many formulators balance mixed xylene against slightly higher flash point co-solvents to manage overall product classification, while still achieving the desired solvency and drying performance described in our article on mixed xylene uses in paints and coatings.
How GNEE BIO Supports Safe Handling and Compliant Shipping
Tianjin Gnee Biotech Co., Ltd. (GNEE BIO), a chemical raw material supplier and exporter established in 2021, supplies Mixed Xylene (CAS 1330-20-7) with full documentation to help customers manage flammability compliance from the moment of purchase through delivery:
- SDS/MSDS provided with every order, covering hazard classification, safe handling and storage
- Export and shipping documentation prepared in line with international dangerous goods regulations
- Packaging options (drums, IBC tanks, ISO tanks) selected to suit safe transport and storage requirements
- Third-party inspection (e.g., SGS) available on request for additional quality and compliance assurance
FAQ: Mixed Xylene Flash Point and Flammability
Q: Is mixed xylene flammable at room temperature?
Its flash point (~27–32°C) is close to or below typical warm ambient/room temperature in many regions, meaning vapors can potentially ignite near an ignition source under warm conditions. It should always be stored and handled as a flammable liquid.
Q: What UN number is used to ship mixed xylene?
Commercial mixed xylene is generally shipped under UN 1307 (Xylenes), Class 3 Flammable Liquid, Packing Group III - always confirm the specific classification on the current SDS for your shipment.
Q: Does GNEE BIO provide SDS documentation before I order?
Yes. GNEE BIO can provide the SDS/MSDS, TDS and COA for Mixed Xylene (CAS 1330-20-7) upon request so customers can confirm classification and compliance requirements before placing an order.
For SDS documentation, packaging options or a bulk quotation, contact GNEE BIO or view the Mixed Xylene product page.