**** SECTION 2 - COMPOSITION, INFORMATION ON INGREDIENTS ****
+----------------+--------------------------------------+----------+-----------+
| CAS# | Chemical Name | % | EINECS# |
|----------------|--------------------------------------|----------|-----------|
| 762-42-5 |Dimethyl acetylenedicarboxylate | 100 % | 212-098-4 |
+----------------+--------------------------------------+----------+-----------+
Hazard Symbols: C
Risk Phrases: 34
**** SECTION 3 - HAZARDS IDENTIFICATION ****
EMERGENCY OVERVIEW
Causes burns.Corrosive.Lachrymator (substance which increases the
flow of tears).Light sensitive.
Potential Health Effects
Eye:
Causes eye burns. Lachrymator (substance which increases the flow
of tears).
Skin:
Causes skin burns.
Ingestion:
Causes gastrointestinal tract burns. May cause methemoglobinemia,
cyanosis (bluish discoloration of skin due to deficient oxygenation
of the blood), convulsions, and death.
Inhalation:
May cause cyanosis (bluish discoloration of skin due to deficient
oxygenation of the blood). Causes chemical burns to the respiratory
tract. Inhalation may be fatal as a result of spasm, inflammation,
edema of the larynx and bronchi, chemical pneumonitis and pulmonary
edema.
Chronic:
Chronic inhalation and ingestion may cause effects similar to those
of acute inhalation and ingestion.
**** SECTION 4 - FIRST AID MEASURES ****
Eyes:
Immediately flush eyes with plenty of water for at least 15 minutes,
occasionally lifting the upper and lower eyelids. Get medical aid
immediately.
Skin:
Get medical aid immediately. Flush skin with plenty of water for at
least 15 minutes while removing contaminated clothing and shoes.
Immediately flush skin with plenty of water for at least 15 minutes
while removing contaminated clothing and shoes. Wash clothing before
reuse. Destroy contaminated shoes.
Ingestion:
Do not induce vomiting. If victim is conscious and alert, give 2-4
cupfuls of milk or water. Never give anything by mouth to an
unconscious person. Get medical aid immediately. Do NOT induce
vomiting. If conscious and alert, rinse mouth and drink 2-4 cupfuls
of milk or water.
Inhalation:
Get medical aid immediately. Remove from exposure and move to fresh
air immediately. If not breathing, give artificial respiration. If
breathing is difficult, give oxygen. Do NOT use mouth-to-mouth
resuscitation.
Notes to Physician:
For methemoglobinemia, administer oxygen alone or with Methylene
Blue depending on the methemoglobin concentration in the blood.
**** 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. During a fire, irritating and highly toxic gases
may be generated by thermal decomposition or combustion. Use water
spray to keep fire-exposed containers cool. Combustible liquid.
Containers may explode if exposed to fire.
Extinguishing Media:
In case of fire, use water, dry chemical, chemical foam, or
alcohol-resistant foam. Use agent most appropriate to extinguish
fire. Cool containers with flooding quantities of water until well
after fire is out.
**** 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. Clean up spills immediately,
observing precautions in the Protective Equipment section. Remove all
sources of ignition. Provide ventilation.
**** SECTION 7 - HANDLING and STORAGE ****
Handling:
Wash thoroughly after handling. Use only in a well-ventilated area.
Do not get in eyes, on skin, or on clothing. Empty containers retain
product residue, (liquid and/or vapor), and can be dangerous. Do not
ingest or inhale. Discard contaminated shoes. Do not pressurize,
cut, weld, braze, solder, drill, grind, or expose empty containers to
heat, sparks or open flames.
Storage:
Keep away from heat, sparks, and flame. Store in a cool, dry place.
Store in a tightly closed container. Corrosives area.
**** 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 adequate general or
local exhaust ventilation to keep airborne concentrations below the
permissible exposure limits.
Exposure Limits
CAS# 762-42-5:
Personal Protective Equipment
Eyes:
Wear appropriate protective eyeglasses or chemical
safety goggles as described by OSHA's eye and face
protection regulations in 29 CFR 1910.133 or European
Standard EN166.
Skin:
Wear appropriate protective gloves to prevent skin
exposure.
Clothing:
Wear appropriate protective clothing to prevent skin
exposure.
Respirators:
Wear a NIOSH/MSHA or European Standard EN 149
approved full-facepiece airline respirator in the
positive pressure mode with emergency escape
provisions. 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 to light yellow
Odor: None reported.
pH: Not available.
Vapor Pressure: Not available.
Viscosity: Not available.
Boiling Point: 98 deg C
Freezing/Melting Point: Not available.
Autoignition Temperature: Not applicable.
Flash Point: 86 deg C ( 186.80 deg F)
Explosion Limits, lower: Not available.
Explosion Limits, upper: Not available.
Decomposition Temperature: Not available.
Solubility in water: Insoluble in water.
Specific Gravity/Density: 1.16
Molecular Formula: C6H6O4
Molecular Weight: 142.0396
**** SECTION 10 - STABILITY AND REACTIVITY ****
Chemical Stability:
Stable under normal temperatures and pressures.
Conditions to Avoid:
High temperatures, mechanical shock, incompatible materials, ignition
sources.
Incompatibilities with Other Materials:
Strong oxidizing agents, strong acids, strong bases, and strong
reducing agents. Explosive reaction with
1-methylsilacyclopenta-2,4-diene at 150 C.
Octakis(trifluorophosphine)dirhodium catalyzes explosive
polymerization of the acid above 20 C.
Hazardous Decomposition Products:
Carbon monoxide, irritating and toxic fumes and gases, carbon
dioxide.
Hazardous Polymerization: May occur.
**** SECTION 11 - TOXICOLOGICAL INFORMATION ****
RTECS#:
CAS# 762-42-5: ES0175000
LD50/LC50:
CAS# 762-42-5: Oral, mouse: LD50 = 550 mg/kg.
Carcinogenicity:
Dimethyl acetylenedicarboxylate -
Not listed by ACGIH, IARC, or NTP.
Other:
See actual entry in RTECS for complete information.
**** SECTION 12 - ECOLOGICAL INFORMATION ****
**** SECTION 13 - DISPOSAL CONSIDERATIONS ****
Products which are considered hazardous for supply are classified as Special
Waste and the disposal of such chemicals is covered by regulations which may
vary according to location. Contact a specialist disposal company or the local
waste regulator for advice. Empty containers must be decontaminated before
returning for recycling.
**** SECTION 14 - TRANSPORT INFORMATION ****
IATA
Shipping Name: TOXIC LIQUID, ORGANIC, NOS
Hazard Class: 6.1
UN Number: 2810
Packing Group: III
IMO
Shipping Name: TOXIC LIQUID, ORGANIC, NOS
Hazard Class: 6.1
UN Number: 2810
Packing Group: III
RID/ADR
Shipping Name: TOXIC LIQUID, ORGANIC, NOS
Hazard Class: 6.1
UN Number: 2810
Packing group: III
**** SECTION 15 - REGULATORY INFORMATION ****
European/International Regulations
European Labeling in Accordance with EC Directives
Hazard Symbols: C
Risk Phrases:
R 34 Causes burns.
Safety Phrases:
S 25 Avoid contact with eyes.
S 26 In case of contact with eyes, rinse immediately
with plenty of water and seek medical advice.
S 28 After contact with skin, wash immediately
with...
S 36/37/39 Wear suitable protective clothing, gloves
and eye/face protection.
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# 762-42-5: No information available.
Canada
CAS# 762-42-5 is listed on Canada's NDSL List.
CAS# 762-42-5 is not listed on Canada's Ingredient Disclosure List.
US FEDERAL
TSCA
CAS# 762-42-5 is listed on the TSCA inventory.
**** SECTION 16 - ADDITIONAL INFORMATION ****
MSDS Creation Date: 3/12/1998 Revision #2 Date: 3/18/2003
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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