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XYLENE, [MIXED ISOMERS]

3 - Flammable liquid
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The Chemical Identifier fields include common identification numbers, the NFPA diamond U.S. Department of Transportation hazard labels, and a general description of the chemical. The information in CAMEO Chemicals comes from a variety of data sources.
CAS Number UN/NA Number
  • 1330-20-7   (mixed isomers)
  • 95-47-6   (o-xylene)   (O-XYLENE)
  • 106-42-3   (p-xylene)   (P-XYLENE)
  • 108-38-3   (m-xylene)   (M-XYLENE)
DOT Hazard Label USCG CHRIS Code
  • Flammable Liquid
none
NIOSH Pocket Guide International Chem Safety Card
o-Xyleneexternal link
NFPA 704
Diamond Hazard Value Description
3
2 0
Blue Health 2 Can cause temporary incapacitation or residual injury.
Red Flammability 3 Can be ignited under almost all ambient temperature conditions.
Yellow Instability 0 Normally stable, even under fire conditions.
White Special
(NFPA, 2010)
General Description
A clear colorless liquid with a characteristic aromatic odor consisting of a mixture of the three isomers (ortho-, meta- and para-). The latter two predominate. Flash point 81-115°F. Less dense (at 7.2 lb / gal) than water and insoluble in water. Hence floats on water. May be toxic by ingestion. Vapors heavier than air and may be narcotic in high concentrations. Used as a solvent for paints and adhesives, and to make other chemicals.

The Hazard fields include special hazard alerts air and water reactions, fire hazards, health hazards, a reactivity profile, and details about reactive groups assignments and potentially incompatible absorbents. The information in CAMEO Chemicals comes from a variety of data sources.
Reactivity Alerts
  • Highly Flammable
Air & Water Reactions
Flammable. Insoluble in water.
Fire Hazard
Excerpt from ERG Guide 130 [Flammable Liquids (Water-Immiscible / Noxious)]:

HIGHLY FLAMMABLE: Will be easily ignited by heat, sparks or flames. Vapors may form explosive mixtures with air. Vapors may travel to source of ignition and flash back. Most vapors are heavier than air. They will spread along the ground and collect in low or confined areas (sewers, basements, tanks, etc.). Vapor explosion hazard indoors, outdoors or in sewers. Those substances designated with a (P) may polymerize explosively when heated or involved in a fire. Runoff to sewer may create fire or explosion hazard. Containers may explode when heated. Many liquids will float on water. (ERG, 2020)
Health Hazard
Excerpt from ERG Guide 130 [Flammable Liquids (Water-Immiscible / Noxious)]:

May cause toxic effects if inhaled or absorbed through skin. Inhalation or contact with material may irritate or burn skin and eyes. Fire will produce irritating, corrosive and/or toxic gases. Vapors may cause dizziness or asphyxiation. Runoff from fire control or dilution water may cause environmental contamination. (ERG, 2020)
Reactivity Profile
XYLENE reacts exothermically with sulfuric acid, nitric acid, and strong oxidizing agents [Handling Chemicals Safely 1980. p. 962].
Belongs to the Following Reactive Group(s)
Potentially Incompatible Absorbents

No information available.

The Response Recommendation fields include isolation and evacuation distances, as well as recommendations for firefighting, non-fire response, protective clothing, and first aid. The information in CAMEO Chemicals comes from a variety of data sources.
Isolation and Evacuation
Excerpt from ERG Guide 130 [Flammable Liquids (Water-Immiscible / Noxious)]:

IMMEDIATE PRECAUTIONARY MEASURE: Isolate spill or leak area for at least 50 meters (150 feet) in all directions.

LARGE SPILL: Consider initial downwind evacuation for at least 300 meters (1000 feet).

FIRE: If tank, rail car or tank truck is involved in a fire, ISOLATE for 800 meters (1/2 mile) in all directions; also, consider initial evacuation for 800 meters (1/2 mile) in all directions. (ERG, 2020)
Firefighting
Excerpt from ERG Guide 130 [Flammable Liquids (Water-Immiscible / Noxious)]:

CAUTION: The majority of these products have a very low flash point. Use of water spray when fighting fire may be inefficient.

SMALL FIRE: Dry chemical, CO2, water spray or regular foam.

LARGE FIRE: Water spray, fog or regular foam. Avoid aiming straight or solid streams directly onto the product. If it can be done safely, move undamaged containers away from the area around the fire.

FIRE INVOLVING TANKS OR CAR/TRAILER LOADS: Fight fire from maximum distance or use unmanned master stream devices or monitor nozzles. Cool containers with flooding quantities of water until well after fire is out. Withdraw immediately in case of rising sound from venting safety devices or discoloration of tank. ALWAYS stay away from tanks engulfed in fire. For massive fire, use unmanned master stream devices or monitor nozzles; if this is impossible, withdraw from area and let fire burn. (ERG, 2020)
Non-Fire Response
Excerpt from ERG Guide 130 [Flammable Liquids (Water-Immiscible / Noxious)]:

ELIMINATE all ignition sources (no smoking, flares, sparks or flames) from immediate area. All equipment used when handling the product must be grounded. Do not touch or walk through spilled material. Stop leak if you can do it without risk. Prevent entry into waterways, sewers, basements or confined areas. A vapor-suppressing foam may be used to reduce vapors. Absorb or cover with dry earth, sand or other non-combustible material and transfer to containers. Use clean, non-sparking tools to collect absorbed material.

LARGE SPILL: Dike far ahead of liquid spill for later disposal. Water spray may reduce vapor, but may not prevent ignition in closed spaces. (ERG, 2020)
Protective Clothing
Excerpt from ERG Guide 130 [Flammable Liquids (Water-Immiscible / Noxious)]:

Wear positive pressure self-contained breathing apparatus (SCBA). Structural firefighters' protective clothing provides thermal protection but only limited chemical protection. (ERG, 2020)
DuPont Tychem® Suit Fabrics
Tychem® Fabric Legend
QS = Tychem 2000 SFR
QC = Tychem 2000
SL = Tychem 4000
C3 = Tychem 5000
TF = Tychem 6000
TP = Tychem 6000 FR
RC = Tychem RESPONDER® CSM
TK = Tychem 10000
RF = Tychem 10000 FR
Testing Details
The fabric permeation data was generated for DuPont by a third party laboratory. Permeation data for industrial chemicals is obtained per ASTM F739. Normalized breakthrough times (the time at which the permeation rate exceeds 0.1 μg/cm2/min) are reported in minutes. All chemicals have been tested between approximately 20°C and 27°C unless otherwise stated. All chemicals have been tested at a concentration of greater than 95% unless otherwise stated. Chemical warfare agents (Lewisite, Sarin, Soman, Sulfur Mustard, Tabun and VX Nerve Agent) have been tested at 22°C and 50% relative humidity per military standard MIL-STD-282. "Breakthrough time" for chemical warfare agents is defined as the time when the cumulative mass which permeated through the fabric exceeds the limit in MIL-STD-282 [either 1.25 or 4.0 μg/cm2].
A Caution from DuPont
This information is based upon technical data that DuPont believes to be reliable on the date issued. It is subject to revision as additional knowledge and experience are gained. The information reflects laboratory performance of fabrics, not complete garments, under controlled conditions. It is intended for informational use by persons having technical skill for evaluation under their specific end-use conditions, at their own discretion and risk. It is the user's responsibility to determine the level of toxicity and the proper personal protective equipment needed. Anyone intending to use this information should first verify that the garment selected is suitable for the intended use. In many cases, seams and closures have shorter breakthrough times and higher permeation rates than the fabric. If fabric becomes torn,abraded or punctured, or if seams or closures fail, or if attached gloves, visors, etc. are damaged, end user should discontinue use of garment to avoid potential exposure to chemical. Since conditions of use are outside our control, DuPont makes no warranties, express or implied, including, without limitation, no warranties of merchantability or fitness for a particular use and assume no liability in connection with any use of this information. This information is not intended as a license to operate under or a recommendation to infringe any patent, trademark or technical information of DuPont or others covering any material or its use.
Normalized Breakthrough Times (in Minutes)
Chemical CAS Number State QS QC SL C3 TF TP RC TK RF
Xylene, mixed isomers 1330-20-7 Liquid >480 >480 >480 >480 >480 >480
Xylene, o- 95-47-6 Liquid >480
> indicates greater than.

Special Warning from DuPont: Tychem® and Tyvek® fabrics should not be used around heat, flames, sparks or in potentially flammable or explosive environments. Only...

...Tychem® ThermoPro, Tychem® Reflector® and Tychem® TK styles 600T/601T (with aluminized outer suit) garments are designed and tested to help reduce burn injury during escape from a flash fire. Users of Tychem® ThermoPro, Tychem® Reflector® and Tychem® TK styles 600T/601T (with aluminized outer suit) garments should not knowingly enter an explosive environment. Tychem® garments with attached socks must be worn inside protective outer footwear and are not suitable as outer footwear. These attached socks do not have adequate durability or slip resistance to be worn as the outer foot covering.

(DuPont, 2022)

First Aid
Excerpt from ERG Guide 130 [Flammable Liquids (Water-Immiscible / Noxious)]:

Call 911 or emergency medical service. Ensure that medical personnel are aware of the material(s) involved and take precautions to protect themselves. Move victim to fresh air if it can be done safely. Give artificial respiration if victim is not breathing. Administer oxygen if breathing is difficult. Remove and isolate contaminated clothing and shoes. In case of contact with substance, immediately flush skin or eyes with running water for at least 20 minutes. Wash skin with soap and water. In case of burns, immediately cool affected skin for as long as possible with cold water. Do not remove clothing if adhering to skin. Keep victim calm and warm. Effects of exposure (inhalation, ingestion or skin contact) to substance may be delayed. (ERG, 2020)

The Physical Property fields include properties such as vapor pressure and boiling point, as well as explosive limits and toxic exposure thresholds The information in CAMEO Chemicals comes from a variety of data sources.
Chemical Formula:
  • C8H10
Flash Point: data unavailable
Lower Explosive Limit (LEL): data unavailable
Upper Explosive Limit (UEL): data unavailable
Autoignition Temperature: data unavailable
Melting Point: data unavailable
Vapor Pressure: data unavailable
Vapor Density (Relative to Air): data unavailable
Specific Gravity: data unavailable
Boiling Point: data unavailable
Molecular Weight: data unavailable
Water Solubility: data unavailable
Ionization Energy/Potential: 8.56 eV [From NPG: o-Xylene] (NIOSH, 2022)
IDLH: 900 ppm [From NPG: o-Xylene] (NIOSH, 2022)

AEGLs (Acute Exposure Guideline Levels)

Final AEGLs for Xylenes (1330-20-7)
Exposure Period AEGL-1 AEGL-2 AEGL-3
10 minutes 130 ppm 2500 ppm 1-flame icon indicates value is 10-49% of LEL. Safety consideration against explosions must be taken into account. 7200 ppm 2-flame icon indicates value is 50-99% of LEL. Extreme safety consideration against explosions must be taken into account.
30 minutes 130 ppm 1300 ppm 1-flame icon indicates value is 10-49% of LEL. Safety consideration against explosions must be taken into account. 3600 ppm 1-flame icon indicates value is 10-49% of LEL. Safety consideration against explosions must be taken into account.
60 minutes 130 ppm 920 ppm 1-flame icon indicates value is 10-49% of LEL. Safety consideration against explosions must be taken into account. 2500 ppm 1-flame icon indicates value is 10-49% of LEL. Safety consideration against explosions must be taken into account.
4 hours 130 ppm 500 ppm 1300 ppm 1-flame icon indicates value is 10-49% of LEL. Safety consideration against explosions must be taken into account.
8 hours 130 ppm 400 ppm 1000 ppm 1-flame icon indicates value is 10-49% of LEL. Safety consideration against explosions must be taken into account.
Lower Explosive Limit (LEL) = 9000 ppm
1-flame icon indicates value is 10-49% of LEL. Safety consideration against explosions must be taken into account.
2-flame icon indicates value is 50-99% of LEL. Extreme safety consideration against explosions must be taken into account.
(NAC/NRC, 2022)

ERPGs (Emergency Response Planning Guidelines)

No ERPG information available.

PACs (Protective Action Criteria)

Chemical PAC-1 PAC-2 PAC-3
Xylenes (1330-20-7) 130 ppm 920 ppm 1-flame icon indicates value is 10-49% of LEL. 2500 ppm 1-flame icon indicates value is 10-49% of LEL. LEL = 9000 ppm
Xylene, m- (includes o- (95-47-6) and p- (106-42-3) isomers) (108-38-3) 130 ppm 920 ppm 2500 ppm 1-flame icon indicates value is 10-49% of LEL. LEL = 11000 ppm
1-flame icon indicates value is 10-49% of LEL.
(DOE, 2018)

The Regulatory Information fields include information from the U.S. Environmental Protection Agency's Title III Consolidated List of Lists, the U.S. Cybersecurity and Infrastructure Security Agency's Chemical Facility Anti-Terrorism Standards, and the U.S. Occupational Safety and Health Administration's Process Safety Management of Highly Hazardous Chemicals Standard List (see more about these data sources).

EPA Consolidated List of Lists

Regulatory Name CAS Number/
313 Category Code
EPCRA 302
EHS TPQ
EPCRA 304
EHS RQ
CERCLA RQ EPCRA 313
TRI
RCRA
Code
CAA 112(r)
RMP TQ
Benzene, m-dimethyl- 108-38-3 1000 pounds X U239
Benzene, o-dimethyl- 95-47-6 1000 pounds X U239
Benzene, p-dimethyl- 106-42-3 100 pounds X U239
Xylene (mixed isomers) 1330-20-7 100 pounds 313 U239
m-Xylene 108-38-3 1000 pounds 313 U239
o-Xylene 95-47-6 1000 pounds 313 U239
p-Xylene 106-42-3 100 pounds 313 U239

(EPA List of Lists, 2022)

CISA Chemical Facility Anti-Terrorism Standards (CFATS)

No regulatory information available.

OSHA Process Safety Management (PSM) Standard List

No regulatory information available.

This section provides a listing of alternate names for this chemical, including trade names and synonyms.
  • BENZENE, M-DIMETHYL-
  • BENZENE, O-DIMETHYL-
  • BENZENE, P-DIMETHYL-
  • DILAN
  • 1,4-DIMETHYL BENZENE
  • DIMETHYLBENZENE
  • 1,2-DIMETHYLBENZENE
  • 1,3-DIMETHYLBENZENE
  • 1,4-DIMETHYLBENZENE
  • DIMETHYLBENZENES
  • M-DIMETHYLBENZENE
  • M-METHYLTOLUENE
  • M-XYLENE
  • M-XYLOL
  • META-XYLENE
  • 2-METHYLTOLUENE
  • 4-METHYLTOLUENE
  • O-DIMETHYLBENZENE
  • O-METHYLTOLUENE
  • O-XYLENE
  • O-XYLOL
  • ORTHO-XYLENE
  • ORTHOXYLENE
  • P-DIMETHYLBENZENE
  • P-METHYLTOLUENE
  • P-PHENYLENEBIS(METHYLENE)
  • P-XYLENE
  • P-XYLOL
  • PARA-XYLENE
  • XYLENE
  • XYLENE (MIXED ISOMERS)
  • XYLENE, [MIXED ISOMERS]
  • 1,2-XYLENE
  • 1,3-XYLENE
  • 1,4-XYLENE
  • XYLENES
  • XYLENES (META-XYLENE)
  • XYLENES (ORTHO-XYLENE)
  • XYLENES (ORTHO-XYLENE, META-XYLENE, PARA-XYLENE)
  • XYLENES (PARA-XYLENE)
  • XYLOL

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