**** SECTION 2 - COMPOSITION, INFORMATION ON INGREDIENTS ****
+----------------+--------------------------------------+----------+-----------+
| CAS# | Chemical Name | % | EINECS# |
|----------------|--------------------------------------|----------|-----------|
| 7677-24-9 |Trimethylsilyl cyanide | 98 | 231-657-3 |
+----------------+--------------------------------------+----------+-----------+
Hazard Symbols: T+ F
Risk Phrases: 11 26/27/28 29
**** SECTION 3 - HAZARDS IDENTIFICATION ****
EMERGENCY OVERVIEW
Highly flammable. Very toxic by inhalation, in contact with skin and
if swallowed. Contact with water liberates toxic gas.Moisture
sensitive.
Potential Health Effects
Eye:
Causes eye irritation.
Skin:
Causes skin irritation. Harmful if absorbed through the skin. May be
metabolized to cyanide which in turn acts by inhibiting cytochrome
oxidase impairing cellular respiration.
Ingestion:
May be fatal if swallowed. May cause tissue anoxia, characterized by
weakness, headache, dizziness, confusion, cyanosis (bluish skin due
to deficient oxygenation of the blood), weak and irregular heart
beat, collapse, unconsciousness, convulsions, coma and death.
Metabolism may release cyanide, which may result in headache,
dizziness, weakness, collapse, unconsciousness and possible death.
Ingestion may result in symptoms similar to cyanide poisoning which
is characterized by asphyxiation.
Inhalation:
May be fatal if inhaled. May cause cyanosis (bluish discoloration of
skin due to deficient oxygenation of the blood). Causes respiratory
tract irritation. May be metabolized to cyanide which in turns act by
inhibiting cytochrome oxidase impairing cellular respiration.
Chronic:
May be metabolized to cyanide which in turn acts by inhibiting
cytochrome oxidase impairing cellular respiration. Chronic exposure
to cyanide solutions may lead to the development of a "cyanide" rash,
characterized by itching, and by macular, papular, and vesicular
eruptions, and may be accompanied by secondary infections. Exposure
to small amounts of cyanide compounds over long periods of time is
reported to cause loss of appetite, headache, weakness, nausea,
dizziness, and symptoms of irritation of the upper respiratory tract
and eyes.
**** SECTION 4 - FIRST AID MEASURES ****
Eyes:
In case of contact, immediately flush eyes with plenty of water for
at least 15 minutes. Get medical aid.
Skin:
In case of contact, immediately flush skin with plenty of water for
at least 15 minutes while removing contaminated clothing and shoes.
Get medical aid immediately. Wash clothing before reuse.
Ingestion:
POISON material. If swallowed, get medical aid immediately. Only
induce vomiting if directed to do so by medical personnel. Never give
anything by mouth to an unconscious person.
Inhalation:
POISON material. If inhaled, get medical aid immediately. Remove
victim to fresh air. If not breathing, give artificial respiration.
If breathing is difficult, give oxygen.
Notes to Physician:
May be partially metabolized to cyanide in the body.
Antidote:
Always have a cyanide antidote kit on hand when working with cyanide
compounds. Get medical advice to use.
**** SECTION 5 - FIRE FIGHTING MEASURES ****
General Information:
As in any fire, wear a self-contained breathing apparatus in
pressure-demand, MSHA/NIOSH (approved or equivalent), and full
protective gear. Vapors may form an explosive mixture with air.
Flammable liquid and vapor. Containers may explode when heated.
Reacts with water, steam or acid to produce toxic and flammable
vapors of hydrogen cyanide.
Extinguishing Media:
Use dry sand or earth to smother fire. Use dry chemical. DO NOT use
water directly on this material or violent reaction may result.
**** SECTION 6 - ACCIDENTAL RELEASE MEASURES ****
General Information: Use proper personal protective equipment as indicated
in Section 8.
Spills/Leaks:
Absorb spill with inert material (e.g. vermiculite, sand or earth),
then place in suitable container. Remove all sources of ignition.
Use a spark-proof tool. Provide ventilation. Do not expose spill to
water. A vapor suppressing foam may be used to reduce vapors.
Approach spill from upwind. Keep unnecessary and unprotected
personnel away.
**** SECTION 7 - HANDLING and STORAGE ****
Handling:
Wash thoroughly after handling. Ground and bond containers when
transferring material. Do not get in eyes, on skin, or on clothing.
Empty containers retain product residue, (liquid and/or vapor), and
can be dangerous. Keep container tightly closed. Do not ingest or
inhale. Do not pressurize, cut, weld, braze, solder, drill, grind,
or expose empty containers to heat, sparks or open flames. Use only
with adequate ventilation. Keep away from heat, sparks and flame.
Storage:
Keep away from heat, sparks, and flame. Keep away from sources of
ignition. Store in a tightly closed container. Keep under a nitrogen
blanket. Store in a cool, dry, well-ventilated area away from
incompatible substances. Refrigerator/flammables. Store protected
from moisture.
**** SECTION 8 - EXPOSURE CONTROLS, PERSONAL PROTECTION ****
Engineering Controls:
Facilities storing or utilizing this material should be equipped
with an eyewash facility and a safety shower. Use only under a
chemical fume hood.
Exposure Limits
CAS# 7677-24-9:
United Kingdom, WEL - TWA: (listed as silica, amorphous): 6 mg/m3
(inhalable dust); 2.4 mg/m3 TWA (respirable dust)
United Kingdom, WEL - STEL: (listed as silica, amorphous): 18 mg/
STEL (inhalable dust); 7.2 mg/m3 STEL (respirable dust)
United States OSHA: 5 mg/m3 TWA (listed under Cyanide anion).
Germany: (listed as cyanide anion): Skin absorber
Netherlands: (listed as cyanide anion): 5 mg/m3 MAC (as CN)
Russia: (listed as silica, amorphous): 1 mg/m3 TWA
Personal Protective Equipment
Eyes:
Wear chemical splash goggles.
Skin:
Wear appropriate protective gloves to prevent skin
exposure.
Clothing:
Wear appropriate protective clothing to prevent skin
exposure.
Respirators:
Follow the OSHA respirator regulations found in 29
CFR 1910.134 or European Standard EN 149. Use a
NIOSH/MSHA or European Standard EN 149 approved
respirator if exposure limits are exceeded or if
irritation or other symptoms are experienced.
**** SECTION 9 - PHYSICAL AND CHEMICAL PROPERTIES ****
Physical State: Liquid
Color: clear, colorless
Odor: bitter-almond
pH: Not available.
Vapor Pressure: 37.3 mm Hg @ 37 deg C
Viscosity: Not available.
Boiling Point: 114 - 117 deg C @ 760 mm Hg
Freezing/Melting Point: 11 deg C
Autoignition Temperature: Not available.
Flash Point: 1 deg C ( 33.80 deg F)
Explosion Limits, lower: 1.36%
Explosion Limits, upper: Not available.
Decomposition Temperature:
Solubility in water: Reacts.
Specific Gravity/Density: .7440 g/cm3
Molecular Formula: C4H9NSi
Molecular Weight: 99.21
**** SECTION 10 - STABILITY AND REACTIVITY ****
Chemical Stability:
Stable under normal temperatures and pressures. Substance is readily
hydrolyzed.
Conditions to Avoid:
Ignition sources, excess heat, exposure to moist air or water,
confined spaces.
Incompatibilities with Other Materials:
Water, strong oxidizing agents, strong reducing agents, strong acids,
strong bases.
Hazardous Decomposition Products:
Hydrogen cyanide, nitrogen oxides, carbon monoxide, carbon dioxide.
Hazardous Polymerization: Will not occur.
**** SECTION 11 - TOXICOLOGICAL INFORMATION ****
RTECS#:
CAS# 7677-24-9 unlisted.
LD50/LC50:
Not available.
Carcinogenicity:
Trimethylsilyl cyanide -
Not listed by ACGIH, IARC, or NTP.
**** SECTION 12 - ECOLOGICAL INFORMATION ****
**** SECTION 13 - DISPOSAL CONSIDERATIONS ****
Dispose of in a manner consistent with federal, state, and local regulations.
**** SECTION 14 - TRANSPORT INFORMATION ****
IATA
Shipping Name: NITRILES, FLAMMABLE, TOXIC, N.O.S.*
Hazard Class: 3,6.1 (6.1)
UN Number: 3273
Packing Group: I
IMO
Shipping Name: NITRILES, FLAMMABLE, TOXIC, N.O.S.
Hazard Class: 3,6.1
UN Number: 3273
Packing Group: I
RID/ADR
Shipping Name: NITRILES, FLAMMABLE, TOXIC, N.O.S.
Hazard Class: 3,6.1
UN Number: 3273
Packing group: I
**** SECTION 15 - REGULATORY INFORMATION ****
European/International Regulations
European Labeling in Accordance with EC Directives
Hazard Symbols: T+ F
Risk Phrases:
R 11 Highly flammable.
R 26/27/28 Very toxic by inhalation, in contact with
skin and if swallowed.
R 29 Contact with water liberates toxic gas.
Safety Phrases:
S 8 Keep container dry.
S 16 Keep away from sources of ignition - No
smoking.
S 36/37 Wear suitable protective clothing and
gloves.
S 45 In case of accident or if you feel unwell, seek
medical advice immediately (show the label where
possible).
WGK (Water Danger/Protection)
CAS# 7677-24-9: 3
Canada
CAS# 7677-24-9 is listed on Canada's NDSL List.
CAS# 7677-24-9 is not listed on Canada's Ingredient Disclosure List.
US FEDERAL
TSCA
CAS# 7677-24-9 is listed on the TSCA inventory.
**** SECTION 16 - ADDITIONAL INFORMATION ****
MSDS Creation Date: 1/20/1998 Revision #3 Date: 4/10/2003
The information above is believed to be accurate and represents the best
information currently available to us. However, we make no warranty of
merchantability or any other warranty, express or implied, with respect to
such information, and we assume no liability resulting from its use. Users
should make their own investigations to determine the suitability of the
information for their particular purposes. In no way shall the company be
liable for any claims, losses, or damages of any third party or for lost
profits or any special, indirect, incidental, consequential or exemplary
damages, howsoever arising, even if the company has been advised of
the possibility of such damages.
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