MATERIAL
Linde GAsS, INC.(216) 642-6600
AGA Gas LLC
Linde Gas LLC
s (216) 642-6600 SAFETY
P.O. Box 94737 WOODS BLVD
P.O. Box 94737
6055 ROCKSIDE DATA SHEET
Cleveland,94737 44101
Cleveland, Ohio 44101
P.O. BOX Ohio
www.us.lindegas.com
www.us.lindegas.com
CLEVELAND, OH 44101-4737 No. 184
PRODUCT NAME CAS #
10026-04-7
Silicon Tetrachloride
DOT I.D. No.:
UN 1818
TRADE NAME AND SYNONYMS
Silicon Tetrachloride; Tetrachloro Silane
DOT Hazard Class:
Class 8
CHEMICAL NAME AND SYNONYMS
Formula
SiCl4
Silicon Tetrachloride
ISSUE DATES AND REVISIONS Chemical Family:
Inorganic chloride
December 2001
HEALTH HAZARD DATA
TIME WEIGHTED AVERAGE EXPOSURE LIMIT
No TWA established (ACGIH 2000 and OSHA 2000). Recommend using Hydrogen Chloride which is a hydrolysis
product of silicon tetrachloride. Hydrogen Chloride has a Ceiling Value of 5 Molar PPM (ACGIH 2000 and OSHA 2000).
SYMPTOMS OF EXPOSURE
Corrosive and irritating to the upper and lower respiratory tracts, skin and eyes. It hydrolyzes very rapidly, yielding
hydrogen chloride and clear gelatinous siloxane. Skin burns and mucousal irritation are like that from exposure to
hydrochloric acid. Symptoms include lacrymation, cough, labored breathing and excessive salivary and sputum
formation. Excessive irritation of the lungs cause acute pneumonitis and pulmonary edema which could be fatal.
Hydrochloric acid burns exhibit severe pain, redness, possible swelling and early necrosis.
TOXICOLOGICAL PROPERTIES
Silicon Tetrachloride is irritating and corrosive to all living tissue. Toxic level exposure to dermal tissue causes
hydrochloric acid burns and skin lesions resulting in early necrosis and scarring. Chemical pneumonitis and pulmonary
edema result from exposure to the lower respiratory tract and deep lung. Residual pulmonary malfunction might also
occur. Burns to the eye result in lesions and possible loss of vision.
Silicon Tetrachloride 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 silicon tetrachloride should not be allowed to work with
or handle this product.
RECOMMENDED FIRST AID TREATMENT
PROMPT MEDICAL ATTENTION IS MANDATORY IN ALL CASES OF OVEREXPOSURE TO SILICON
TETRACHLORIDE. RESCUE PERSONNEL SHOULD BE EQUIPPED WITH SELF-CONTAINED BREATHING
APPARATUS.
Inhalation: Conscious persons should be assisted to an uncontaminated area and inhale fresh air. Unconscious
persons should be moved to an uncontaminated area, given mouth-to-mouth resuscitation and supplemental oxygen.
Keep the victim warm and quiet. Assure that mucus or vomitted material does not obstruct the airway by positional
drainage. Delayed pulmonary edema may occur. Keep patient under medical observation for 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.
Silicon Tetrachloride
HAZARDOUS MIXTURES OF OTHER LIQUIDS, SOLIDS, OR GASES
Highly corrosive and reacts vigorously with water or the moisture in the air liberating heat and yielding hydrogen
chloride and clear gelatinous siloxane.
PHYSICAL DATA
BOILING POINT LIQUID DENSITY AT BOILING POINT
135.7潞F (57.6潞C) @ 68潞F (20潞C) = 92.6 lb/ft3 (1483 kg/m3)
@ 68潞F (20潞C) = 3.7 psia (26 kPa)
VAPOR PRESSURE GAS DENSITY AT 70潞F. 1 atm
HCl Density = .095 lb/ft3 (1.52 kg/m3)
SOLUBILITY IN WATER FREEZING POINT
Hydrolyzes -94潞F (-70潞C)
EVAPORATION RATE SPECIFIC GRAVITY (AIR=1)
Hydrolyzes with moisture in the air. For HCl @ 70潞F (21.1潞C) = 1.27
Slightly tinted liquid with sharp, acidic odor.
APPEARANCE AND ODOR
FIRE AND EXPLOSION HAZARD DATA
AUTO IGNITION TEMPERATURE
FLASH POINT (Method used) FLAMMABLE LIMITS % BY VOLUME
N/A N/A N/A N/A
LEL UEL
ELECTRICAL CLASSIFICATION
EXTINGUISHING MEDIA
Nonhazardous
Nonflammable
SPECIAL FIRE FIGHTING PROCEDURES
N/A
UNUSUAL FIRE AND EXPLOSION HAZARDS
N/A
REACTIVITY DATA
STABILITY CONDITIONS TO AVOID
Unstable N/A
Stable X
INCOMPATIBILITY (Materials to avoid) Water and water vapor
HAZARDOUS DECOMPOSITION PRODUCTS Hydrolysis yields hydrogen chloride.
HAZARDOUS POLYMERIZATION CONDITIONS TO AVOID
May Occur
N/A
Will Not Occur N/A
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
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Silicon Tetrachloride
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 HCl
Hood with forced ventilation MECHANICAL (Gen.) OTHER
N/A
N/A
PROTECTIVE GLOVES
Kel-F庐 or Teflon庐
EYE PROTECTION
Safety goggles or glasses
OTHER PROTECTIVE EQUIPMENT
Safety shoes, safety shower, eyewash 鈥渇ountain鈥?, face shield
SPECIAL PRECAUTIONS*
SPECIAL LABELING INFORMATION
I.D. No.: UN 1818
DOT Shipping Name: Silicon Tetrachloride
DOT Hazard Class: Class 8
DOT Shipping Label: Corrosive
SPECIAL HANDLING RECOMMENDATIONS
Use only in well-ventilated areas. Do not drag, slide or roll containers. Use a suitable hand truck for container
movement. Do not heat container by any means to increase the discharge rate of product from the container. Use a
check valve or trap in the discharge line to prevent hazardous back flow into the container.
SPECIAL STORAGE RECOMMENDATIONS
Protect containers from physical damage. Store in cool, dry, well-ventilated area away from heavily trafficked areas and
emergency exits. Do not allow the temperature where containers are stored to exceed 130潞F (54潞C). Containers should
be stored upright and firmly secured to prevent falling or being knocked over. Full and empty containers should be
segregated. Use a 鈥渇irst in - first out鈥? inventory system to prevent full containers being stored for excessive periods of
time.
SPECIAL PACKAGING RECOMMENDATIONS
Any materials suitable for use with anhydrous hydrogen chloride may be used with silicon tetrachloride. Systems and
equipment must be scrupulously dry.
OTHER RECOMMENDATIONS OR PRECAUTIONS
Containers should not be refilled except by qualified personnel. Silicon Tetrachloride is not considered a toxic chemical
and is not subject to the reporting requirements of SARA, Title III, Section 313.
NFPA 704 No. for Silicon Tetrachloride = 3 0 0 None
*Various Government Agencies (i.e. Department of Transportation, Occupational Safety and Health Administration, Food and Drug Administration
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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.
Silicon Tetrachloride
ADDITIONAL DATA
RECOMMENDED FIRST AID TREATMENT: (Continued)
Eye Contact: PERSONS WITH POTENTIAL EXPOSURE TO SILICON TETRACHLORIDE SHOULD NOT WEAR
CONTACT LENSES.
Flush contaminated eye(s) with copious quantities of water. Part eyelids to assure complete flushing. Continue for a
minimum of 15 minutes.
Skin Contact: Flush affected area with copious quantities of water. Remove affected clothing as rapidly as possible.
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