Tel: 514-956-7503
Fax: 514-956-7504
Internet: www.megs.ca
Email : support@megs.ca
Montreal St-Laurent Tel : 514-956-7503 Fax : 514-956-7504
Ottawa Nepean Tel : 613-226-4228 Fax : 613-226-4229
Quebec Quebec Tel : 418-834-7447 Fax : 418-834-3774
MSDS: Silane; Monosilane
PRODUCT INFORMATION
PRODUCT: Silane; Monosilane
TRADE NAME: Silane; Monosilane
CHEMICAL NAME: Silane; Silicon Tetrahydride; Silicane
SYNONYMS: None
FORMULA: SiH4
CHEMICAL FAMILY: Silicon Hydride
SUPPLIER'S NAME: MEGS Inc.
SUPPLIER'S ADDRESS: 2675 De Miniac
Ville St-Laurent, Qc, H4S 1E5
EMERGENCY PHONE NUMBER: (514) 956-7503
MOLECULAR WEIGHT: 32.13
PRODUCT USE: Various
PRODUCT IDENTIFICATION UN 2203
NUMBER:
HAZARDOUS INGREDIENTS
CHEMICAL ID CONCENTRATION CAS # LD(50) LC(50)
99+%
Silane 7803-62-5 None Inhl-Rat
9600 ppm/4 h
PHYSICAL DATA
PHYSICAL STATE: Gas under pressure
APPEARANCE: Colorless gas with a repulsive odor
ODOR: See above
ODOR THRESHOLD: Unknown
SPECIFIC GRAVITY (H 2O = 1): See Vapor Density (air = 1)
VAPOR PRESSURE: Not applicable (gas)
VAPOR DENSITY (air = 1): 1.11
EVAPORATION RATE: Not applicable (gas)
BOILING POINT: -111.4掳C
FREEZING POINT: -186.4掳C
pH: Unknown
GAS DENSITY: 1.35 kg/m鲁 @ 15掳C, 101.3 kPa
COEFFICIENT OF WATER/OIL Insoluble in water
DISTRIBUTION:
FIRE OR EXPLOSION HAZARD
CONDITIONS OF FLAMMABILITY: Greater than 3% concentrations are
pyrophoric in air
MEANS OF EXTINCTION: Shut off source of silane. Cool
surrounding containers with water
spray.
FLASHPOINT AND METHOD OF Pyrophoric
DETERMINATION:
UPPER EXPLOSION LIMIT (% BY VOL): Pyrophoric
LOWER EXPLOSION LIMIT (% BY VOL): Pyrophoric
AUTO-IGNITION TEMPERATURE: Pyrophoric
FLAMMABILITY CLASSIFICATION: Pyrophoric
HAZARDOUS COMBUSTION None
PRODUCTS:
EXPLOSION DATA: Pyrophoric
SENSITIVITY TO STATIC DISCHARGE: Pyrophoric
REACTIVITY DATA
CHEMICAL STABILITY: See table below
INCOMPATIBLE MATERIALS: Air, halogens, other oxidizers
CONDITIONS OF REACTIVITY: See table below
HAZARDOUS DECOMPOSITION Silicon and hydrogen above 420掳C
PRODUCTS:
FLAMMABILITY OF SILANE IN CERTAIN CARRIER GASES
Molar % of SiH 4 Molar % of SiH 4 Molar % of SiH 4
Carrier gas <1% 1% - 3% <3%
Ar A B C
N2 A B C
He A B C
A = Nonflammable mixture
B = Probably nonflammable mixture
C = Flammable mixture
TOXICOLOGICAL PROPERTIES
ROUTES OF ENTRY:
SKIN CONTACT: Dermal burns from ignited silane are similar to other thermal
burns.
SKIN ABSORPTION: None
EYE: None
INHALATION: Symptoms of inhalation are not well defined. It has been reported
that breathing this gas may cause headache or nausea.
INGESTION: None
ACUTE OVER EXPOSURE EFFECTS: Since silane is spontaneously flammable
in air (liberating silicon dioxide), its toxicological properties are difficult to
determine. Inhalation of low concentrations (probably less than one molar
percent) of silane so that spontaneous ignition does not occur could react with
basic solutions in the body liberating silicate and hydrogen. Further, with possible
hydrolysis in body tissues, silicic acid could be formed.
CHRONIC OVER EXPOSURE EFFECTS: None reported
EXPOSURE LIMITS: TWA = 5 molar ppm.
IRRITANCY OF PRODUCT: See Skin Contact, above.
SENSITIZATION TO MATERIAL: None known
CARCINOGENICITY, REPRODUCTIVE EFFECTS: None known
TERATOGENICITY, MUTAGENICITY: None known
TOXICOLOGICALLY SYNERGISTIC PRODUCTS: None known
PREVENTIVE MEASURES
PERSONAL PROTECTIVE EQUIPMENT: Protective gloves. Safety goggles or
glasses. Safety shoes, safety shower.
SPECIFIC ENGINEERING CONTROLS: Pure silane is noncorrosive and may be
handled in most common structural materials. Carbon steel, stainless steel,
Monel庐, and Hastelloy庐 C are the most commonly used materials. It is also
compatible with ordinary glass, Pyrex庐 and quartz. For gasketing materials,
Viton庐, Nylon庐, Teflon庐, and Kel-F庐 are all satisfactory. Most all silane leaks
will ignite in air producing silicon dioxide. Occasionally the silicon dioxide will
slow or stop the leak. These leaks are recongnizable by the presence of the
silicon dioxide and permanent repairs to the leak should be made.
LEAK AND SPILL PROCEDURES: EVACUATE ALL PERSONNEL FROM
AFFECTED AREA.
Use appropriate protective equipment. If leak is in user's equipment, be certain to
purge piping with an inert gas prior to attempting repairs. If leak is on container or
container valve, contact the closest MEGS location.
WASTE DISPOSAL: 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 MEGS for proper disposal. For
emergency disposal, contact the closest MEGS location.
HANDLING PROCEDURES AND EQUIPMENT: USE ONLY IN WELL-
VENTILATED AREAS.
Valve protection caps must remain in place unless container is secured with
valve outlet piped to the point of use. Do not drag, slide or roll cylinders. Use a
suitable hand truck for cylinder movement. Use a pressure reducing regulator
when connecting to lower pressure piping or systems. Do not heat cylinder by
any means to increase the discharge rate of product from the cylinder. Use a
check valve or trap in the discharge line to prevent hazardous back flow into the
cylinder. Do not tamper with (valve) safety device. Close valve after each use
and when empty.
STORAGE REQUIREMENTS: Protect cylinders from physical damage. Store in
cool, dry, well-ventilated area of non combustible construction away from heavily
trafficked areas and emergency exits. Do not allow the temperature where
cylinders are stored to exceed 52掳C. Cylinders must be stored upright and firmly
secured to prevent falling or being knocked over. Full and empty cylinders should
be segregated. Use a "first in - first out" inventory system to prevent full cylinders
being stored for excessive periods of time. Post "No Smoking or Open Flames"
signs in the storage or use area. There should be no sources of ignition in the
storage or use area. Silane cylinders, whether full or empty, should not be stored
with other flammable products.
TDG CLASSIFICATION: 2.1
WHMIS CLASSIFICATION: A, B. D1, F
SPECIAL SHIPPING INFORMATION: 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.
FIRST AID MEASURES
SPECIFIC FIRST AID PROCEDURES: PROMPT MEDICAL ATTENTION IS
MANDATORY IN ALL CASES OF OVEREXPOSURE TO SILANE. RESCUE
PERSONNEL SHOULD BE EQUIPPED WITH SELF-CONTAINED BREATHING
APPARATUS AND BE COGNIZANT OF EXTREME FIRE AND EXPLOSION
HAZARD.
INHALATION: Conscious persons should be assisted to an uncontaminated
area and inhale fresh air. Quick removal from the contaminated area is most
important. Unconscious persons should be moved to an uncontaminated area,
given assisted resuscitation and supplemental oxygen. Medical assistance
should be sought immediately. Further treatment should be symptomatic and
supportive.
EYE CONTACT: Not applicable
SKIN CONTACT: Dermal burns from ignited silane should be treated as with any
thermal burn.
PREPARATION INFORMATION
PREPARED BY: Safety Department
DATE PREPARED: 05/09/1999
LAST REVISION DATE: 06/01/2002
THE INFORMATION, RECOMMENDATIONS AND DATA CONTAINED IN THIS
DOCUMENT ARE INTENDED TO BE USED BY PROPERLY TRAINED AND
QUALIFIED PERSONNEL ONLY AND AT THEIR SOLE RISKS AND
DISCRETION. THE INFORMATION, RECOMMENDATIONS AND DATA
HEREIN CONTAINED ARE DERIVED FROM SOURCES WHICH WE BELIEVE
TO BE RELIABLE. HOWEVER, MEGS INC. MAKES NO REPRESENTATION
AND GIVES NO WARRANTY OF ANY KIND WHATSOEVER WITH RESPECT
TO THEIR ACCURACY OR COMPLETENESS AND ASSUMES NO LIABILITY
FOR DAMAGES OR LOSS ARISING DIRECTLY OR INDIRECTLY FROM
THEIR USE, WHETHER PROPER OR IMPROPER.
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