MATERIAL
Linde Gas LLC (216) 642-6600
LindeGAS, LLC (216) 642-6600
AGA Gas INC. SAFETY
P.O. Box 94737 WOODS BLVD
P.O. Box 94737
6055 ROCKSIDE DATA SHEET
Cleveland, Ohio 44101
Cleveland, Ohio 44101
P.O. BOX 94737
www.us.lindegas.com
www.us.lindegas.com
CLEVELAND, OH 44101-4737 No. 154
PRODUCT NAME CAS #
7783-82-6
Tungsten Hexafluoride
DOT I.D. No.:
UN 2196
TRADE NAME AND SYNONYMS
Tungsten hexafluonide (D.O.T.)
DOT Hazard Class:
Division 2.3
CHEMICAL NAME AND SYNONYMS
Formula
WF6
Tungsten Hexafluoride
ISSUE DATES AND REVISIONS Chemical Family:
Metal Flouride
Revised January 1995
HEALTH HAZARD DATA
TIME WEIGHTED AVERAGE EXPOSURE LIMIT
TWA = None listed. Hydrogen fluoride (hydrolysis product) Ceiling limit (as F) = 3 Molar
PPM. OSHA 1993 8 Hr. TWA for HF (as F) = 3 Molar PPM.
SYMPTOMS OF EXPOSURE
Corrosive and irritating to the upper and lower respiratory tracts,I skin and eyes. It hydrolyzes very rapidly yielding
hydrofluoric acid so that skin burns and mucosal irritation are like that from exposure to that acid. Symptoms include
lacrymation, cough, labored breathing and excessive salivary and sputum formation. Excessive irritation of the lungs
causes acute pneumonitis and pulmonary edema which could be fatal. Hydrofluoric acid dermal burns exhibit severe
pain, redness possibleswellinq and early necrosis.
TOXICOLOGICAL PROPERTIES
Tungsten hexafluoride is irritating and corrosive to all living tissues. Toxic level exposure to dermal tissue causes
hydrofluoric acid burns and skin lesions resulting in necrosis and eventual scarring. Burns are progressive while any
residual active fluorides remain. Chemical pneumonitis and pulmonary edema result from exposure to the lower
respiratory tract and deep lung. Residual pulmonary malfunction might also occur. Burns of the eye result in lesions and
possible loss of vision. Extended low level systemic absorption of fluorides may cause fluorosis, an abnormal
calcification pattern of the skeletal system.
RECOMMENDED FIRST AID TREATMENT
PROMPT MEDICAL ATTENTION IS MANDATORY IN ALL CASES OF OVEREXPOSURE TO TUNGSTEN
HEXAFLUORIDE. RESCUE PERSONNEL SHOULD BE EQUIPPED WITH SELF-CONTAINED BREATHING
APPARATUS.
Inhalation: Conscious persons should be assisted to an uncontaminated area and breathe fresh air. Quick removal
from the contaminated area is most important. Unconscious persons should be moved to an uncontaminated area and
given assisted respiration and supplemental oxygen. Keep the victim warm and quiet. Assure that mucous or vomited
material does not obstruct the airway by use of positional drainage. Delayed pulmonary edema may occur. Keep
patient under medical observation fer at least 24 hours.
(Continued on Page 4)
Information contained in this material safety data sheet is offered without charge for use by technically qualified personnel at their discretion and
risk. All statements, technical information and recommendations contained herein are based on tests and data which we believe to be reliable, but
the accuracy or completeness thereof is not guaranteed and no warranty of any kind is made with respect thereto. This information is not intended
as a license to operate under or a recommendation to practice or infringe any patent of this Company or others covering any process, composition
of matter or use.
Since the Company shall have no control of the use of the product described herein, the Company assumes no liability for loss or damage incurred
from the proper or improper use of such product.
Tungsten hexafluoride Page 2
HAZARDOUS MIXTURES OF OTHER LIQUIDS, SOLIDS, OR GASES
Tungsten hexafluoride reacts violently with water to produce hydrofluoric acid and tungsten
oxyfluorides.
PHYSICAL DATA
BOILING POINT LIQUID DENSITY AT BOILING POINT
62.71潞F (17.06潞C) 214.1 lb/ft3 (3430 kg/m3)
VAPOR PRESSURE GAS DENSITY AT 70掳F. 1 atm
@ 70潞F (21.1潞C) = 16.7 psia (115kPa) .793 1b/ft3 (12.7 kg/m3)
SOLUBILITY IN WATER FREEZING POINT
Hydrolyzes violently 36.1潞F (2.3潞C)
EVAPORATION RATE SPECIFIC GRAVITY (AIR=1)
Unknown @ 70潞F (21.1潞C) = 10.6
Liquid is liqht yellow; vapor is colorless and odorless
APPEARANCE AND ODOR
FIRE AND EXPLOSION HAZARD DATA
AUTO IGNITION TEMPERATURE
FLASH POINT (Method used) FLAMMABLE LIMITS % BY VOLUME (See Page 4)
N/A N/A
N/A
ELECTRICAL CLASSIFICATION
EXTINGUISHING MEDIA
Nonflammable liquid and vapor
SPECIAL FIRE FIGHTING PROCEDURES
If containers are involved in a fire, safely relocate or keep cool with water spray.
UNUSUAL FIRE AND EXPLOSION HAZARDS
None
REACTIVITY DATA
STABILITY CONDITIONS TO AVOID
Unstable None
Stable X
INCOMPATIBILITY (Materials to avoid)
Water as vapor or liquid
HAZARDOUS DECOMPOSITION PRODUCTS Hydrofluoric acid and tungsten oxyfluorides when hydrolyzed
HAZARDOUS POLYMERIZATION CONDITIONS TO AVOID
May Occur
None
Will Not Occur X
SPILL OR LEAK PROCEDURES
STEPS TO BE TAKEN IN CASE MATERIAL IS RELEASED OR SPILLED
Evacuate all personnel from affected area. Use appropriate protective equipment. If
leak is in user鈥檚 equipment, be certain to purge piping with an inert gas prior to
attempting repairs. If leak is in container or container valve, contact your closest
supplier location or call the emergency telephone number listed herein.
WASTE DISPOSAL METHOD
Do not attempt to dispose of waste or unused quantities. Return in the shipping container
properly labeled, with any valve outlet plugs or caps secured and valve protection cap in place
to your supplier. For emergency disposal assistance, contact your closest supplier location or
call the emergency telephone number listed herein.
2
Tungsten Hexafluoride Page 3
SPECIAL PROTECTION INFORMATION
Positive pressure air line with mask or self-contained breathing apparatus should be available for
RESPIRATORY PROTECTION
(Specify type)
emergency use.
VENTILATION LOCAL EXHAUST SPECIAL
N/A
To prevent accumulation above the Ceiling Limit for HF
See Local Exhaust MECHANICAL (Gen.) OTHER
N/A
N/A
PROTECTIVE GLOVES
Plastic or Rubber
EYE PROTECTION
Safety goggles or glasses
OTHER PROTECTIVE EQUIPMENT
Safety shoes, safety shower, eyewash 鈥渇ountain,鈥? face
SPECIAL PRECAUTIONS*
SPECIAL LABELING INFORMATION
DOT Hazard Class: Division 2.3
DOT Shipping Name: Tungsten hexafluoride
I.D. No.: UN 2196
DOT Shipping Labels: Toxic Gas; Corrosive
SPECIAL HANDLING RECOMMENDATIONS
Use only in well-ventilated areas. Valve protection caps must remain in place unless container is secured with valve
outlet piped to use point. Do not drag, slide or roll cylinders. Use a suitable hand truck for cylinder movement. Do not
heat cylinder by any means to increase the discharge rate of product from the cylinder. Use a check valve to trap in the
discharge line to prevent hazardous back flow into the cylinder.
For additional handling recommendations, consult Compressed Gas Association鈥檚 Pamphlet P-1.
SPECIAL STORAGE RECOMMENDATIONS
Protect cylinders from physical damage. Store in cool, dry, well-ventilated area away from heavily trafficked areas and
emergency exits. Do not allow the temperature where cylinders are stored to exceed 125潞F (52潞C). Cylinders should be
stored upright and firmly secured to prevent falling or being knocked over. Full and empty cylinders should be
segregated. Use a 鈥渇irst in - first out鈥? inventory system to prevent full cylinders being stored for excessive periods of
time.
SPECIAL PACKAGING RECOMMENDATIONS
Most metals form a passive fluoride film that protects the metal from further corrosion. Monel庐 and nickel are preferred
for higher temperature applications. Teflon庐 is the preferred gasket material.
OTHER RECOMMENDATIONS OR PRECAUTIONS
Keep equipment scrupulously dry. Many of the metal fluorides are water soluble so that the passive film corrosion
protection may be destroyed if wetted with water. Compressed gas cylinders should not be refilled except by qualified
producers of compressed gases. Shipment of a compressed gas cylinder which has not been filled by the owner or with
his (written) consent is a violation of Federal Law (49CFR).
Continued on Page 4)
*Various Government Agencies (i.e. Department of Transportation, Occupational Safety and Health Administration, Food and Drug Administration
3
and others) may have specific regulations concerning the transportation, handling, storage or use of this product which will not be reflected in this
data sheet. The customer should review these regulations to ensure that he is in full compliance.
Tungsten Hexafluoride
TOXICOLOGICAL PROPERTIES: (Continued)
Tungsten hexafluoride is not listed in the IARC, NTP or by OSHA as a carcinogen or potential carcinogen.
Persons in ill health where such illness would be aggravated by exposure to tungsten hexafluoride should not be allowed
to work with or handle this product.
RECOMMENDED FIRST AID TREATMENT: (Continued)
Eye Contact: PERSONS WITH POTENTIAL EXPOSURE TO TUNGSTEN HEXAFLUORIDE SHOULD NOT WEAR
CONTACT LENSES.
Flush contaminated eye(s) with copious quantities of water. Part eyelids with fingers to assure complete flushing.
Continue for minimum of 30 minutes.
Skin Contact: Flush affected area with copious quantities of water. Remove affected clothing as rapidly as possible.
Dermal burns may be treated with a calcium gluconate gel or slurry in water or glycerine. This compound binds the active
fluorides in an insoluble form, limits burn extens,on and relieves pain.
SPECIAL PRECAUTIONS
OTHER RECOMMENDATIONS OR PRECAUTIONS: (Continued)
Always secure cylinders in an upright position before transporting them. NEVER transport cylinders in trunks of vehicles,
enclosed vans, truck cabs or in passenger compartments. Transport cylinders secured in open flatbed or in open pick-up
type vehicles.
Reporting under SARA, Title II鈥?, Section 313 not required.
SPECIAL PRECAUTIONS
OTHER RECOMMENDATIONS OR PRECAUTIONS: (CONTINUED)
Always secure cylinders in an upright position before transporting them. NEVER transport cylinders in trunks of vehicles,
enclosed vans, truck cabs or in passenger environments. Transport cylinders secured in open flatbed or in open pick-up
type vehicles.
Reporting under SARA, Title III, Section 313 not required.
NFPA 704 No. for tungsten hexaflouride = 4 0 2 W
4
|