PARA-XYLENE

MATERIAL SAFETY DATA SHEET



PARA-XYLENE

MSDS No.  01263000 ANSI/ENGLISH

1.0   CHEMICAL PRODUCT AND COMPANY IDENTIFICATION

PRODUCT NAME:  PARA-XYLENE

MANUFACTURER/SUPPLIER:

Amoco Chemical Company
200 East Randolph Drive
Chicago, Illinois 60601 U.S.A.


EMERGENCY HEALTH INFORMATION: 
1 (800) 447-8735

EMERGENCY SPILL INFORMATION: 
1 (800) 424-9300 CHEMTREC (USA)

OTHER PRODUCT SAFETY INFORMATION: 
(312) 856-3907

2.0   COMPOSITION/INFORMATION ON INGREDIENTS


Component CAS# Range % by Wt.
P-Xylene 106-42-3 100

(See Section 8.0, "Exposure Controls/Personal Protection", for exposure guidelines)


3.0   HAZARDS IDENTIFICATION

EMERGENCY OVERVIEW:  Warning! Flammable. Causes eye and skin irritation. Can be harmful if high concentrations are inhaled. Harmful or fatal if liquid is aspirated into lungs.

POTENTIAL HEALTH EFFECTS: 

EYE CONTACT:  Causes eye irritation.

SKIN CONTACT:  Causes skin irritation.

INHALATION:  Can be harmful if high concentrations are inhaled. See "Toxicological Information" section (Section 11.0).

INGESTION:  Harmful or fatal if liquid is aspirated into lungs. See "Toxicological Information" section (Section 11.0).

HMIS CODE: (Health:2) (Flammability:3) (Reactivity:0)

NFPA CODE: (Health:2) (Flammability:3) (Reactivity:0)

4.0   FIRST AID MEASURES

EYE:  Immediately flush eyes with plenty of water for at least 15 minutes. Then get immediate medical attention.

SKIN:  Wash exposed skin with soap and water. Remove contaminated clothing and thoroughly clean and dry before reuse. Get medical attention if irritation develops.

INHALATION:  If adverse effects occur, remove to uncontaminated area. Give artificial respiration if not breathing. Get immediate medical attention.

INGESTION:  If swallowed, do NOT induce vomiting. Get immediate medical attention.

5.0   FIRE FIGHTING MEASURES

FLASHPOINT: 81°F(27°C) ASTM D56

UEL: 7.0%

LEL: 1.1%

AUTOIGNITION TEMPERATURE: 924°F (496°C) (approximate)

FLAMMABILITY CLASSIFICATION: Flammable Liquid.

EXTINGUISHING MEDIA:  Agents approved for Class B hazards (e.g., dry chemical, carbon dioxide, foam, steam) or water fog.

UNUSUAL FIRE AND EXPLOSION HAZARDS:  Flammable liquid. Vapor may explode if ignited in enclosed area.

FIRE-FIGHTING EQUIPMENT:  Firefighters should wear full bunker gear, including a positive pressure self-contained breathing apparatus.

PRECAUTIONS:  Keep away from sources of ignition (e.g., heat and open flames). Keep container closed. Use with adequate ventilation.

HAZARDOUS COMBUSTION PRODUCTS:  Incomplete burning can produce carbon monoxide and/or carbon dioxide and other harmful products.

6.0   ACCIDENTAL RELEASE MEASURES

Remove or shut off all sources of ignition. Remove mechanically or contain on an absorbent material such as dry sand or earth. Keep out of sewers and waterways.

7.0   HANDLING AND STORAGE

HANDLING:  Keep away from ignition sources (e.g., heat, sparks, or open flames). Keep container closed. Use with adequate ventilation.

STORAGE:  Store in flammable liquids storage area. Store away from heat, ignition sources, and open flame in accordance with applicable regulations. Keep container closed.

8.0   EXPOSURE CONTROLS / PERSONAL PROTECTION

EYE:  Do not get in eyes. Wear chemical goggles.

SKIN:  Avoid skin contact. Wear protective clothing and gloves.

INHALATION: Do not breathe mist or vapor. Use with adequate ventilation. If ventilation is inadequate, use NIOSH/MSHA certified respirator that will protect against organic vapor and dust/mist.

ENGINEERING CONTROLS:  Control airborne concentrations below the exposure guidelines.

EXPOSURE GUIDELINES:

Component CAS# Exposure Limits
P-Xylene 106-42-3 OSHA PEL: 100 ppm (1989)(1971)
OSHA STEL: 150 ppm (1989); Not established. (1971)
ACGIH TLV-TWA: 100 ppm
ACGIH TLV-STEL: 150 ppm


9.0   CHEMICAL AND PHYSICAL PROPERTIES

APPEARANCE AND ODOR: Liquid. Clear. Sweet odor.

pH: Not determined.

VAPOR PRESSURE: 6.4 mm Hg at 20 °C

VAPOR DENSITY: 3.7

BOILING POINT: 282°F(139°C)

MELTING POINT: 56°F(13°C)

SOLUBILITY IN WATER: Negligible, below 0.1%.

SPECIFIC GRAVITY (WATER=1): 0.86

10.0   STABILITY AND REACTIVITY

STABILITY:  Burning can be started easily.

CONDITIONS TO AVOID:  Keep away from ignition sources (e.g. heat, sparks, and open flames).

MATERIALS TO AVOID:  Avoid chlorine, fluorine, and other strong oxidizers.

HAZARDOUS DECOMPOSITION:  Burning can produce carbon monoxide and/or carbon dioxide and other harmful products.

HAZARDOUS POLYMERIZATION:  Will not occur.

11.0   TOXICOLOGICAL INFORMATION

ACUTE TOXICITY DATA: 

EYE IRRITATION: Testing not conducted. See Other Toxicity Data.

SKIN IRRITATION: Testing not conducted. See Other Toxicity Data.

DERMAL LD50: Testing not conducted. See Other Toxicity Data.

ORAL LD50: Testing not conducted. See Other Toxicity Data.

INHALATION LC50: Testing not conducted. See Other Toxicity Data.

OTHER TOXICITY DATA:  In humans, overexposure to xylene can cause headache, fatigue, dizziness, listlessness, confusion, irritability, gastrointestinal disturbances (nausea and loss of appetite), flushing of the face, and a feeling of increased body heat. Exposure to xylene vapors above recommended exposure limits (100 ppm - TWA) can cause irritation of the eyes, nose and throat as well as tightening of the chest and staggering gait. Severe overexposure to xylene has been reported to cause irregular heartbeat or rapid incoordinate contractions of the heart, tremors, central nervous system depression, and unconsciousness. Lethality has resulted upon exposure to 10,000 ppm. The odor threshold for xylene is reported to be 1 ppm.

Aspiration of this product into the lungs can cause chemical pneumonia and can be fatal. Aspiration into the lung can occur while vomiting after ingestion of this product.

The oral LD50 for xylene is 4300 mg/kg (rat). The inhalation LC50 is 6350 ppm in rats exposed for 4 hours and 3907 ppm in mice exposed for 6 hours.

No significant treatment related effects were seen following inhalation exposure of rats and dogs exposed t0 810 ppm for 13 weeks, whereas liver damage and lung inflammation were reported in guinea pigs exposed to 300 ppm for a total of 64 exposures (4 hours der day, 6 days per week).

Xylenes were not teratogenic in rats exposed via inhalation to 100 and 400 ppm, however, adverse effects upon the unborn have been reported at exposure levels producing toxicity in the mother. Xylenes have produced negative results in various genetic toxicity tests, including the AMES assay, mouse lymphoma assay in vitro, rat bone marrow cytogenetic assay in vivo, and a dominant lethal assay.

No component of this product present at levels greater than 0.1% as a carcinogen by NTP, IARC or OSHA.

12.0   ECOLOGICAL INFORMATION

Ecotoxicity Test Data:

Para-xylene (p-xylene, or 4-xylene) is toxic to fish and other aquatic life. Published test results of the acute toxicity of of p-xylene for several aquatic species show that concentrations of 2 to 10 mg/L are acutely toxic to most species tested. Acute toxicity endpoints ranged from 2 to 35 mg/L, with a geometric mean of 7 mg/L. The para-isomer appears to be slightly more toxic than the meta- and ortho-isomers.

Biodegradation Potential:

Xylenes have been shown to be readily biodegradable in water using standard protocols with inocula including sewage, activated sludge, and seawater. Field data indicates biodegradation in several situations. However, reports suggest that p-xylene may persist in some groundwater situations. Rates of degradation are expected to vary with environmental conditions and the extent of adaptation of the microbial population.

Bioconcentration Potential:

P-xylene is not expected to bioconcentrate or bioaccumulate. A bioconcentration factor of 138 to 158 is predicted using the estimated octanol-water partition coefficient (log Kow) of 3.12 to 3.2. A bioconcentration factor of 20 was reported for eels. Metabolism and excretion of xylenes has been demonstrated in several organisms, generally via production of toluic acid. Significant bioconcentrations is unlikely if bioconcentration factors are less than 1000 and the chemical is metabolized.

Other Ecological Information:

P-xylene is expected to volatilize from water and soil with a relatively high Henry's law constant of 0.32, yielding an estimated half-life in water of less than 1 week. Sorption to soil is low to moderate, with the Koc of ortho-xylene being 48-68. Abiotic degradation in air occurs through reaction with photochemically produced hydroxyl radicals, resulting in typical losses of 67-86% per day. Xylenes are likely to move with groundwater from soils and to volatilize from both soil and surface waters.

The potential for long-term ecological effects to intermittent environmental releases is expected to be minimal. However, repeated discharges may cause long-term adverse effects in the aquatic environment.

13.0   DISPOSAL INFORMATION

Disposal must be in accordance with applicable federal, state, or local regulations. Residues and spilled material are hazardous waste due to ignitability.

The container for this product can present explosion or fire hazards, even when emptied! To avoid risk of injury, do not cut, puncture, or weld on or near this container. Since the emptied containers retain product residue, follow label warnings even after container is emptied.

14.0   TRANSPORTATION INFORMATION

U.S. DEPT OF TRANSPORTATION

Shipping Name Xylenes
Hazard Class 3
Identification Number UN1307
Packing Group III
RQ RQ (Para-Xylene)

INTERNATIONAL INFORMATION:

Sea (IMO/IMDG)

Shipping Name Xylenes
Class 3.3
Packing Group III
UN Number UN1307

Air (ICAO/IATA)

Shipping Name Xylenes
Class 3
Subsidiary Class UN1307
Packing Group III

European Road/Rail (ADR/RID)

Shipping Name Xylenes
Class 3
Item 31°(C)

Canadian Transportation of Dangerous Goods 

Shipping Name Xylenes
Hazard Class 3.3
Subsidiary Class 9.2
UN Number UN1307
Packing Group III

15.0   REGULATORY INFORMATION

CERCLA SECTIONS 102a/103 HAZARDOUS SUBSTANCES (40 CFR Part 302.4): This product is reportable under 40 CFR Part 302.4 because it contains the following substance(s):

Component/CAS Number Weight % Component Reportable Quantity (RQ)
P-Xylene 106-42-3 100 100 lbs.



SARA TITLE III SECTION 302 EXTREMELY HAZARDOUS SUBSTANCES (40 CFR Part 355): This product is not regulated under Section 302 of SARA and 40 CFR Part 355.

SARA TITLE III SECTIONS 311/312 HAZARDOUS CATEGORIZATION (40 CFR Part 370): This product is defined as hazardous by OSHA under 29 CFR Part 1910.1200(d).

SARA TITLE III SECTION 313 (40 CFR Part 372): This product contains the following substance(s), which is on the Toxic Chemicals List in 40 CFR Part 372:

Component/CAS Number Weight Percent
P-Xylene 106-42-3 100


U.S. INVENTORY (TSCA): Listed on inventory.

OSHA HAZARD COMMUNICATION STANDARD: Flammable liquid. Irritant.

EC INVENTORY (EINECS/ELINCS):  In compliance.

JAPAN INVENTORY (MITI):  Not determined.

AUSTRALIA INVENTORY (AICS):  Not determined.

KOREA INVENTORY (ECL):  Not determined.

CANADA INVENTORY (DSL):  Not determined.

PHILIPPINE INVENTORY (PICCS):  Not determined.

16.0   OTHER INFORMATION

Prepared by:

  Environment, Health and Safety Department

Issued: March 28, 1997

Supersedes: February 27, 1996


This Material Safety Data Sheet conforms to the requirements of ANSI Z400.1.

This material safety data sheet and the information it contains is offered to you in good faith as accurate. We have reviewed any information contained in this data sheet which we received from sources outside our company. We believe that information to be correct but cannot guarantee its accuracy or completeness. Health and safety precautions in this data sheet may not be adequate for all individuals and/or situations. It is the user's obligation to evaluate and use this product safely and to comply with all applicable laws and regulations. No statement made in this data sheet shall be construed as a permission or recommendation for the use of any product in a manner that might infringe existing patents. No warranty is made, either express or implied.