Dichlorosilane+-+Canada+-+2007.pdf

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Praxair Material Safety Data Sheet
Product Name:
Supplier
/Manufacture:
Synonym:
Trade Name:
1. Chemical Product and Company Identification
Chemical Name:
Dichlorosilane
Chemical Formula: H2SiCl2
Chemical Family:
Phone:
Fax:
Emergencies:      * 1-800-363-0042
905-803-1600
905-803-1682
Praxair Canada Inc.
1 City Centre Drive
Suite 1200
Mississauga, ON L5B 1M2
Telephone:
Product Name: 
Dichlorosilane 
MSDS# E-4587-B 
Date: 2/15/2007
Dichlorosilane                                                                      Praxair Chlorosilane A-199
DCS
Chlorosilane
*Call emergency numbers 24 hours a day only for spills, leaks, fire, exposure, or accidents involving this
product. For routine information, contact your supplier or Praxair sales representative.
Product Use:
Not available.
2. Composition and Information on Ingredients
Dichlorosilane
>99%
4109-96-0 Not
available.
157ppm
Not available.
Hydrogen chloride
Trace
7647-01-0 Not
available.
1560ppm
5ppm
TLV-TWA
(ACGIH)
LD50
(Species
&
Routes)
INGREDIENTS
CAS
NUMBER
%  (VOL)
LC50
(Rat, 4 hrs.)
Emergency Overview
3. Hazards Identification
Toxic, flammable, corrosive, high-pressure liquid & gas. May be fatal if inhaled. Can cause
eye, skin and respiratory tract burns. Water can cause violent reaction. Symptoms may be
delayed. Self-contained breathing apparatus must be worn by rescue workers.
DANGER!
THRESHOLD LIMIT VALUE: TLV-TWA Data from 2007 Guide to Occupational Exposure Values (ACGIH).
TLV-TWAs should be used as a guide in the control of health hazards and not as fine lines between safe and
dangerous concentrations.
Low vapour concentrations will iritate the nose, throat and chest causing discomfort or pain
with coughing, excess sputum, runny nose and difficulty with breathing. Higher
concentrations may result in the inhalation of harmful and possibly lethal, amounts of
material. The nasal passages, larynx and lungs may be injured.
INHALATION:
EFFECTS OF A SINGLE (ACUTE) OVEREXPOSURE:
SKIN CONTACT:
Brief contact will cause itching or discomfort, with the development of local redness and
possibly swelling. Sustained contact will cause pain, local redness, swelling, ulceration, and
possibly bleeding into the inflamed site. Prolonged or widespread skin contact may result in
absorption of potentially harmful amounts of material.
ROUTES OF
EXPOSURE:
Inhalation.
Copyright © 2004, Praxair Canada Inc.
Page 1 of 9
Product Name: 
Dichlorosilane 
MSDS# E-4587-B 
Date: 2/15/2007
SWALLOWING:
EYE CONTACT:
An unlikely route of exposure. This product is a gas at normal temperature and pressure.
Highly to seriously toxic. May cause severe burns of the mouth, throat, esophagus, and
stomach. There may be pain in the mouth, throat, chest, and abdomen and possible swelling
of the tissues in the mouth and throat. Effects may include nausea, vomiting, diarrhea,
dizziness, drowsiness, faintness, weakness, thirst, circulatory collapse, and loss of
consciousness.
Vapor will cause discomfort or pain in the eye, with excess tear production and blinking, and
excess redness and possibly swelling of the conjunctiva. If high concentrations of hydrogen
chloride are formed, then injury to the cornea may develop. Splashes of liquid into the eye will
cause pain, excess tear production and blinking, and marked excess redness and swelling of
the conjunctiva. Severe corneal injury may occur, which, if not adequately treated, could
permanently impair vision.
SKIN
ABSORPTION:
Prolonged or widespread skin contact may result in the absorption of potentially harmful
amounts of material.
EFFECTS OF REPEATED (CHRONIC) OVEREXPOSURE:
CARCINOGENIC EFFECTS: Classified A4 (Not classifiable for human or animal.) by  ACGIH, 3 (Not classifiable for
human.) by IARC [Hydrogen chloride].
Prolonged or repeated exposure to hydrogen chloride vapor may discolor and erode the teeth, ulcerate the nasal
mucosa, and cause the nose and gums to bleed.
OTHER EFFECTS OF OVEREXPOSURE:
None known.
MEDICAL CONDITIONS AGGRAVATED BY OVEREXPOSURE:
Inhalation may aggravate asthma and inflammatory or fibrotic pulmonary disease.  The skin irritating effects of the
material may aggravate an existing dermatitis.
SIGNIFICANT LABORATORY DATA WITH POSSIBLE RELEVANCE TO HUMAN HEALTH HAZARD EVALUATION:
CARCINOGENICITY:
Not listed as carcinogen by OSHA, NTP or IARC.
In a short-term (9-day) repeated-exposure study with vapor from dichlorosilane, evidence of lung injury was present
down to a nominal vapor concentration of 2.7 ppm. (The equivalent of HCl concentration was 8.0 ppm.) These findings
indicate that lung injury is not solely due to HCl formed from dichlorosilane.
An unlikely route of exposure. This product is a gas at normal temperature and pressure. If patient is fully conscious, give
two glasses of water or milk at once. Do not induce vomiting. Get medical attention without delay.
Check for and remove all contact lenses. Immediately flush eyes thoroughly with water for at least 15 minutes. Hold the
eyelids open and away from the eyeballs to ensure that all surfaces are flushed thoroughly. Seek the advice of a
physician, preferably an ophthalmologist, immediately. Get medical attention.
In case of contact, immediately flush skin with plenty of water.  Remove contaminated clothing and shoes.  Wash
clothing before reuse.  Thoroughly clean shoes before reuse.  Get medical attention.
If inhaled, remove to fresh air.  If not breathing, give artificial respiration.  If breathing is difficult, give oxygen.  Get
medical attention immediately.
WARNING: Rescuer may receive chemical burns from giving mouth-to-mouth resuscitation. If breathing is difficult,
qualified personnel may give oxygen. Get immediate medical attention, even if no symptoms are present. Call a
physician.
4. First Aid Measures
EYE CONTACT:
SKIN CONTACT:
INHALATION:
SWALLOWING:
NOTES TO PHYSICIAN:
Copyright © 2004, Praxair Canada Inc.
Page 2 of 9
Product Name: 
Dichlorosilane 
MSDS# E-4587-B 
Date: 2/15/2007
Part of the effects from overexposure to dichlorosilane are due to liberation of hydrogen chloride.
• Dichlorosilane is highly irritant and corrosive to mucosae.
• Swallowed dichlorosilane may produce ulceration and possibly perforation in the upper alimentary tract. Mediastinitis or
peritonitis and the complications thereof, may develop.
• With massive overexposure to the vapor, delayed onset pulmonary edema may develop. Secondary infection may
develop in the inflamed respiratory tract. Individuals having significant overexposure to the vapor should be kept under
observation.
• Aspirated material may produce lung injury. Emesis should not be induced mechanically or pharmacologically. If it is
considered necessary to evacuate the stomach contents, then this should be undertaken by means least likely to result
in aspiration, e.g., in the presence of airway intubation. Caution should be taken to avoid perforation of an acutely
inflamed or ulcerated area of the alimentary tract.
Contact the Poison Control Center in your area for additional information on patient management and follow-up.
5. Fire Fighting Measures
44°C (111.2°F)
4.6-4.8%
AUTOIGNITION
TEMPERATURE
FLAMMABLE LIMITS
IN AIR, % by volume:
FLASH POINT
(test method)
CLOSED CUP: -52.2°C (-62°F). (Tag)
LOWER:
UPPER:
94.0-98.0%
EXTINGUISHING MEDIA:
No known fire extinguishing methods. Coarse water spray or all-purpose type foams applied in accordance with
manufacturer's recommendations for large fires.
SPECIAL FIRE FIGHTING PROCEDURES:
DANGER! DANGER! Toxic, flammable, corrosive liquid and gas under pressure. Evacuate all personnel from
danger area. Do not approach area without selfcontained breathing apparatus and protective clothing.
Immediately cool cylinders with water spray from maximum distance, taking care not to extinguish flames.
Remove ignition sources if without risk. If flames are accidentally extinguished, explosive reignition may
occur. Take appropriate measures, e.g., total evacuation. Withdraw immediately in case of rising sound
from the venting safety device or any discoloration of tank due to fire. Reapproach with extreme caution.
Reduce corrosive vapors with coarse water spray. Reverse flow into cylinder may cause rupture. (See
section 16.) Stop flow of gas if without risk, while continuing cooling water spray. Remove all containers
from area of fire if without risk. Allow fire to burn out. On-site fire brigades must comply with OSHA 29 CFR
1910.156.
UNUSUAL FIRE AND EXPLOSION HAZARD:
Forms explosive mixtures with air and oxidizing agents. Heat of fire can build pressure in cylinder and cause it to
rupture. Dichlorosilane cylinders may be equipped with a pressure relief device. No part of cylinder should be subjected
to a temperature higher than 125° F (52°C). If leaking or spilled dichlorosilane catches fire, do not extinguish flames.
Poisonous, flammable, and corrosive vapors may spread from leak and could explode if reignited by sparks, flames, or
other sources of ignition including imperceptible static sparks. Explosive atmospheres may linger. Before entering area,
especially confined areas, check with an appropriate device. To protect persons from cylinder fragments and toxic
fumes should a rupture occur, evacuate the area if the fire cannot be brought under immediate control.
This product has a low autoignition temperature. Exposure to heat from a fire or from the waterdichlorosilane
reaction can cause the dichlorosilane to autoignite. The acidic decomposition products formed by burning dichlorosilane
from leaks may rapidly attack the metal at the leak area, especially if the metal is hot. Use proper bonding and
grounding during liquid transfer as described in National Fire Protection Association document NFPA 77.
FLAMMABLE :
Yes.
IF YES, UNDER WHAT
CONDITIONS?
Not available.
Copyright © 2004, Praxair Canada Inc.
Page 3 of 9
Product Name: 
Dichlorosilane 
MSDS# E-4587-B 
Date: 2/15/2007
Extremely easy to ignite vapor. Minimum ignition energy–0.0154 millijoules (similar to carbon disulfide). Quenching
distance–0.005-inch (12.7 mm, less than hydrogen). (ASTM E582-76.) Vapor may require special precautions beyond
Group A of Article 500-2 of National Electrical Code. Vapor has very low autoignition temperature of 111 ± 5° C (44 ±
3°C) in dry air (ASTM E659-78). May ignite spontaneously in hot air or if it contacts a hot body of about this temperature
or greater. Vapor burns extremely rapidly in air. Deflagrates significantly faster than hydrogen. Explosibility indices are
Pmax = 149 psia (1027 kPa) and KG = 1990 bar-m/s in a 5.28-gal (20-liter) vessel. It may not be possible to
successfully vent a deflagration. Dichlorosilane may detonate in confinement.
HAZARDOUS COMBUSTION PRODUCTS:
These products are halogenated compounds.  Some metallic oxides.
SENSITIVITY TO IMPACT:
SENSITIVITY TO STATIC DISCHARGE:
Not available.
Avoid impact against container.
6. Accidental Release Measures
STEPS TO BE TAKEN IF MATERIAL IS RELEASED OR SPILLED:
DANGER!
DANGER! Toxic, flammable, corrosive liquid and gas under pressure. Immediately evacuate all
personnel from danger area. Do not approach area without self-contained breathing apparatus and
protective clothing. Gas forms explosive mixtures with air. (See section 5). Before entering area,
especially a confined area, check atmosphere with an appropriate device. Remove all sources of ignition
if without risk. A dichlorosilane fire will usually result if a spill contacts a small amount of water. Reduce
vapors with coarse water spray. Reverse flow into cylinder may cause rupture. (See section 16.) Shut off
flow if without risk. Ventilate area or move cylinder to well-ventilated area. Prevent runoff from
contaminating surrounding environment. Poisonous, flammable vapors may spread from spill. Do not
turn on any ignition source until the area is determined to be free of fire or explosion hazard.
WASTE DISPOSAL METHOD:
Prevent waste from contaminating the surrounding environment. Keep personnel away. Discard and product, residue,
disposable container, or liner in an environmentally acceptable manner, infull compliance with federal, provincial, and
local regulations. If necessary, call your local supplier for assistance.
EMERGENCY DISPOSAL: Dichlorosilane can be disposed of by first reacting it with water, then neutralizing the acid
(HCl) that is formed by the reaction. This reaction proceeds rapidly and liberates heat, hydrogen, and hydrogen chloride.
Wear suitable protective equipment (section 8) and observe all other precautions set forth in this MSDS. Use plenty of
water to absorb the heat and hydrogen chloride. The dichlorosilane should be discharged below the surface of the water
and bubbled into water slowly enough to avoid discharge of vapors to the atmosphere. For more effective scrubbing,
the water could contain some soda ash or caustic soda. After neutralization and dilution, the waste solution can be
discharged to a biological wastewater treatment system.
Store and use with adequate ventilation. Separate flammable cylinders from oxygen, chlorine, and other oxidizers by at
least 20 feet or use a barricade of non-combustible material. This barricade should be at least 5 feet high and have a
fire resistance rating of at least ½ hour. Firmly secure cylinders upright to keep them from falling or being knocked over.
Screw valve protection cap firmly in place by hand. Post "No Smoking or Open Flames" signs in storage and use areas.
There must be no sources of ignition. All electrical equipment in storage areas must be explosion-proof. Storage areas
must meet national electric codes for Class 1 hazardous areas. Store only where temperature will not exceed 125°F
(52°C). Store full and empty cylinders separately. Use a first-in, first-out inventory system to prevent storing full cylinders
for long periods. For full details and requirements, see NFPA 50A, published by the National Fire Protection
Association.
7. Handling and Storage
PRECAUTIONS TO BE TAKEN IN STORAGE:
PRECAUTIONS TO BE TAKEN IN HANDLING:
Copyright © 2004, Praxair Canada Inc.
Page 4 of 9
Product Name: 
Dichlorosilane 
MSDS# E-4587-B 
Date: 2/15/2007
Protect cylinders from damage. Use a suitable hand truck to move cylinders; do not drag, roll, slide, or drop. Electrical
equipment must be non-sparking or explosion-proof. Leak check system with soapy water; never use a flame. Never
attempt to lift a cylinder by its cap; the cap is intended solely to protect the valve. Never insert an object (e.g., wrench,
screwdriver, pry bar) into cap openings; doing so may damage the valve and cause a leak. Use an adjustable strap
wrench to remove over-tight or rusted caps. Open valve slowly. If valve is hard to open, discontinue use and contact
your supplier. For other precautions, see section 16.
For additional information on storage and handling, refer to Compressed Gas Association (CGA) pamphlet P-1, "Safe
Handling of Compressed Gases in Containers," available from the CGA. Refer to section 16 for the address and phone
number along with a list of other available publications.
OTHER HAZARDOUS CONDITIONS OF HANDLING, STORAGE, AND USE:
Be sure to read and understand all labels and instructions supplied with all containers of this product.
OTHER HAZARDOUS CONDITIONS OF HANDLING, STORAGE, AND USE: Toxic,
flammable, corrosive liquid and gas under pressure. Vapor may cause flash fire. Do not breathe gas. Do not get
vapors or liquid in eyes, on skin or clothing (see section 3). Harmful or fatal if inhaled. Corrosive and harmful or fatal if
swallowed. Causes eye and skin burns. Harmful if absorbed through skin. Aspiration may cause lung damage. Do not
induce vomiting. Have safety showers and eyewash fountains immediately available. Use piping and equipment
adequately designed to withstand pressures to be encountered. May form explosive mixtures with air. Keep away
from heat, sparks, or open flame. Ground all equipment. Use only spark-proof tools and explosion-proof equipment.
Static ignition hazard can result from handling and use. Prevent reverse flow. Reverse flow into cylinder may cause
rupture. Use a check valve or other protective device in any line or piping from the cylinder. Store and use in a dry
environment with adequate ventilation at all times. Use only in a closed system constructed of corrosionresistant
materials. Close valve after each use; keep closed even when empty. Keep away from oxidizing agents and from other
flammables. Be sure to read and understand all labels and instructions supplied with all containers of this product.
Never work on a pressurized system. If there is a leak, close the cylinder valve. Blow the system down in an
environmentally safe manner in compliance with all federal, state, and local laws; then repair the leak. When returning
cylinder to supplier, be sure valve is closed; then install valve outlet plug tightly. Never place a compressed gas
cylinder where it may become part of an electrical circuit.
WARNING: Hot organic chemical vapors or mists are susceptible to sudden spontaneous combustion
when mixed with air. Ignition may occur at temperatures below those published in the literature as “autoignition” or
“ignition” temperatures. Ignition temperatures decrease with increasing vapor volume and vapor/air contact time, and
are influenced by pressure changes.
Ignition may occur at typical elevated-temperature process conditions, especially in processes operating under vacuum
if subjected to sudden ingress of air, or outside process equipment operating under elevated pressure if sudden escape
of vapors or mists to the atmosphere occurs.
Any proposed use of this product in elevated-temperature processes should be thoroughly evaluated to ensure that safe
operating conditions are established and maintained.
NOTE: Prior to using any plastics, confirm their compatibility with dichlorosilane.
Recommended Equipment: In semiconductor process gas and other suitable applications, Praxair recommends the
use of engineering controls such as gas cabinet enclosures, automatic gas panels (used to purge systems on cylinder
changeout), excess-flow valves throughout the gas distribution system, double containment for the distribution system,
and continuous gas monitors.
8. Exposure Controls/Personal Protection
VENTILATION/ENGINEERING CONTROLS:
LOCAL EXHAUST:
MECHANICAL (general):
Use explosion-proof local exhaust ventilation with sufficient air
flow to keep the dichlorosilane concentrations below the TLV in
the worker's breathing zone.
Inadequate.
See SPECIAL.
Copyright © 2004, Praxair Canada Inc.
Page 5 of 9
Product Name: 
Dichlorosilane 
MSDS# E-4587-B 
Date: 2/15/2007
PERSONAL PROTECTION:
SPECIAL:
OTHER:
Use only in a closed system.
A corrosion-resistant, forced-draft fume hood is preferred. A
canopy type of forced-air fume hood equipped with an
explosion-proof device may be more desirable for certain
applications.
See SPECIAL.
RESPIRATORY PROTECTION: Use air-supplied respirators for concentrations up to 10 times the
applicable permissible exposure limit. For higher concentrations,
a full-face, self-contained breathing apparatus is required.
Select in accordance with provincial regulations, local bylaws or
guidelines. Selection should also be based on the current CSA
standard Z94.4, "Selection, Care and Use of Respirators".
Respirators should also be approved by NIOSH and MSHA.
SKIN PROTECTION: Wear neoprene work gloves when handling cylinders.
EYE PROTECTION: Wear safety glasses when handling cylinders.
Select in accordance with the current CSA standard Z94.3,
"Industrial Eye and Face Protection", and any provincial
regulations, local bylaws or guidelines.
OTHER PROTECTIVE EQUIPMENT: Metatarsal shoes for cylinder handling. Protective clothing where
needed. Cuffless trousers should be worn outside the shoes.
Select in accordance with the current CSA standard Z195,
"Protective Foot Wear",  and any provincial regulations, local
bylaws or guidelines.
9. Physical and Chemical Properties
100% (v/v).
-122°C (-187.6°F)
1.22 (Water = 1)
1 6 6 . 8  k P a  ( @
20°C)
Insoluble in cold water.
101 g/mole
Irritating.  Choking. (Strong.)
Colorless.
BOILING POINT
FREEZING POINT:
82 compared to
(Butyl Acetate=1)
APPEARANCE & ODOUR:
MOLECULAR WEIGHT:
SPECIFIC
GRAVITY:
VAPOUR
PRESSURE
EVAPORATION
RATE
SOLUBILITY IN
WATER,
8.2°C (46.8°F)
LIQUID ( Water = 1)
(Butyl Acetate=1):
PHYSICAL STATE: Gas. (Compressed Gas.)
VAPOUR
(air = 1)
SPECIFIC
GRAVITY:
3.48
VAPOUR DENSITY: N/A
% VOLATILES BY
VOLUME:
ODOUR THRESHOLD:
Not available.
COEFFICIENT OF
WATER/OIL
DISTRIBUTION:
pH:
Not applicable.
N/A
Unstable.
10. Stability and Reactivity
STABILITY:
INCOMPATIBILITY (materials to avoid):
CONDITIONS OF CHEMICAL INSTABILITY:
Not available.
Copyright © 2004, Praxair Canada Inc.
Page 6 of 9
Product Name: 
Dichlorosilane 
MSDS# E-4587-B 
Date: 2/15/2007
Yes.
HAZARDOUS DECOMPOSITION PRODUCTS:
HAZARDOUS POLYMERIZATION:
CONDITIONS OF REACTIVITY:
Burning can produce chlorine, hydrogen
chloride, hydrogen, and oxides of silicon.
Acute overexposure to the products of
combustion may irritate the respiratory tract.
Fires resulting from chlorosilane leaks in
steel equipment present a special hazard.
The acidic decomposition products may
rapidly attack the steel at the leak area,
especially if the steel is hot.
At room temperatures, this product may
explode on contact with nitrates; other
oxidizing agents may cause similar
behavior. It reacts violently with water. It
reacts rapidly (exothermically) with alcohols,
primary and secondary amines, ammonia,
and other compounds containing active
hydrogen atoms. It will react violently with
the water in aqueous acid
solutions. When it reacts with moisture in
the air, it produces dense white clouds of
silica and large volumes of hydrogen
chloride. Hydrogen, which can pose fire and
explosion hazards, may also be evolved.
The solid hydrolysis products are also
reported to be flammable. Dichlorosilane
may redistribute under the influence of heat
or catalysts, such as amines, rust, or
aluminum chloride, to form mixtures of
silane, monochlorosilane, trichlorosilane,
and silicon tetrachloride. These mixtures
may be pyrophoric (may ignite
spontaneously when exposed to air or
oxygen).
See Above.
11. Toxicological  Information
See section 3.
12. Ecological Information
No adverse ecological effects expected. This product does not contain any Class I or Class II ozone-depleting chemicals.
The components of this mixture are not listed as marine pollutants by TDG Regulations.
WASTE DISPOSAL
METHOD:
13. Disposal Considerations
Do not attempt to dispose of residual or unused quantities. Return cylinder to supplier.
Copyright © 2004, Praxair Canada Inc.
Page 7 of 9
Product Name: 
Dichlorosilane 
MSDS# E-4587-B 
Date: 2/15/2007
14. Transport Information
HAZARD
CLASS:
Class 2.3: Poisonous
g a s . C l a s s  2 . 1 :
Flammable gas.Class
8: Corrosive material
IDENTIFICATION
#:
TDG/IMO SHIPPING
NAME:
Dichlorosilane
UN2189
PRODUCT RQ:
SHIPPING LABEL(s):
Poison gas, Flammable gas, Corrosive material
PLACARD (when
required):
Poison gas, Flammable gas, Corrosive material
Cylinders should be transported in a secure position, in a well-ventilated vehicle. Cylinders transported in an enclosed,
nonventilated compartment of vehicle can present serious safety hazards.
SPECIAL SHIPPING INFORMATION:
All
15. Regulatory Information
Class A: Compressed gas.
Class B-1: Flammable gas.
Class D-1A: Material causing immediate and serious toxic effects (VERY TOXIC).
Class D-2B: Material causing other toxic effects (TOXIC).
Class E: Corrosive gas.
Class F: Dangerously reactive material.
WHMIS (Canada)
International Regulations
EINECS
Not available.
R23- Toxic by inhalation.
DSCL (EEC)
International Lists No products were found.
The following selected regulatory requirements may apply to this product. Not all such requirements are identified. Users of this
product are solely responsible for compliance with all applicable federal, provincial, and local regulations.
 
 DSL (Canada)                      This product is on the DSL list 
16. Other Information
STANDARD VALVE CONNECTIONS FOR U.S. AND CANADA:
THREADED:
PIN-INDEXED YOKE:
CGA-678
Not available.
MIXTURES:
When two or more gases, or liquefied gases are mixed, their hazardous properties may combine to create additional,
unexpected hazards.  Obtain and evaluate the safety information for each component before you produce the mixture.
Consult an Industrial Hygienist, or other trained person when you make your safety evaluation of the end product.
Remember, gases and liquids have properties which can cause serious injury or death.
HAZARD RATING SYSTEM:
2
4
3
HEALTH
FLAMMABILITY
HMIS RATINGS:
PHYSICAL HAZARD
Copyright © 2004, Praxair Canada Inc.
Page 8 of 9
Product Name: 
Dichlorosilane 
MSDS# E-4587-B 
Date: 2/15/2007
ULTRA-HIGH-INTEGRITY
CONNECTION:
CGA-636
PREPARATION INFORMATION:
DATE:
DEPARTMENT:
TELEPHONE:
 2/15/2007
Safety and Environmental Services
905-803-1600
Use the proper CGA connections.  DO NOT USE ADAPTERS.  Additional limited-standard connections may
apply.  See CGA pamphlets V-1 and V-7 listed below.
Ask your supplier about free Praxair safety literature as referred to in this MSDS and on the label for this product.
Further information about this product can be found in the following pamphlets published by the Compressed Gas
Association, Inc. (CGA), 4221 Walney Road, 5th Floor, Chantilly, VA 20151-2923, Telephone (703) 788-2700, Fax (703)
961-1831, website: www.cganet.com.
P-1
Safe Handling of Compressed Gases in Containers
V-1
Compressed Gas Cylinder Valve Inlet and Outlet Connections
---
Handbook of Compressed Gases, Fourth Edition
For more indepth information for each component, refer to the pure product MSDS.
The information contained in this MSDS is generated from technical sources using the Chemmate Mixture
MSDS system and the pure-product MSDS for each component.  These mixtures are not tested as a whole for
chemical, physical, or health effects.
Other trademarks used herein are trademarks or registered trademarks of their respective owners.
The opinions expressed herein are those of qualified experts within Praxair Canada Inc. We believe that the information
contained herein is current as of the date of this Material Safety Data Sheet. Since the use of this information and the
conditions of use of the product are not within the control of Praxair Canada Inc., it is the user's obligation to determine the
conditions of safe use of the product.
Praxair Canada Inc. requests the users of this product to study this Material Data Sheet (MSDS) and become aware of
product hazards and safety information.  To promote safe use of this product, a user should (1) notify its employees,
agents and contractors of the information on this MSDS and any product hazards and safety nformation, (2) furnish this
same information to each of its customers for the product, and (3) request such customers to notify their employees and
customers for the product of the same product hazards and safety information.
Praxair Canada Inc.
1 City Centre Drive
Suite 1200
Mississauga, ON L5B 1M2
Page 9 of 9
Copyright © 2004, Praxair Canada Inc.
Praxair and the Flowing Airstream design are trademarks of
Praxair Canada Inc.